Page 2 IMPORTANT THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCE OF REFERENCE FOR WORK IN THE FIELD. SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER.
Page 5 Chapter 10 Troubleshooting provides tables of maintenance/inspection, standards/ adjustments, and problem identification (image fault/malfunction). Appendix contains a general timing chart and general circuit diagrams. COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 6 All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and be able to identify and isolate faults in the machine. COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 7: System Configuration
In addition to the functions 10 sets of pages of a 10-bin sorter, staples automatically. sorted pages automatically. Cassette Feeding Module-C1 Provides an additional cassette. COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 9: Table Of Contents
DC Controller (4/4) ..... 2-15 G. Inputs to and Outputs from 1. Inputs to the Accessories (1/1) ......2-16 DC Controller (1/3) ....... 2-9 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 10 3. Turning On the Blank Exposure 3. Cleaning the No. 6 Mirror ... 4-27 Lamp in Direct/Enlarge Mode ..4-13 C. Drum Unit ......... 4-28 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 11 (AB/INCH) ........5-25 VI. DISASSEMBLY/ASSEMBLY ....5-15 3. Adjusting the Left/Right A. Pick-Up Assembly ......5-16 Registration ........ 5-26 1. Removing the Pick-Up Roller ..5-16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 12 B. Control Panel ........7-13 1. Removing the Lamp 1. Removing the Control Panel ..7-13 C. Copyboard Glass ......7-14 Regulator PCB ......7-21 viii COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 13 7. Checking the Periodically D. Pick-Up/Feeding System ....10-14 Replaced Parts ......10-26 1. Adjusting the Pressure 8. Others ........10-26 of the Separation Pad ....10-14 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 14 14. E710/E711 ....... 10-49 E. Variable Resistors, Light-Emitting 15. E712 ......... 10-50 Diodes, and Check Pins by PCB ... 10-77 16. E717 ......... 10-50 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 15 D. SPECIAL TOOLS LIST ...... A-7 B. SIGNALS AND ABBREVIATIONS ..A-2 E. SOLVENTS AND OILS ...... A-8 C. GENERAL CIRCUIT DIAGRAM ..A-5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 17: General Description
VI. PONITS TO NOTE (BY THE USER) ..1-15 B. Cross Section ........1-9 VII. IMAGE FORMATION ......1-16 IV. OPERATING THE MACHINE ....1-10 A. Outline ..........1-16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 19: Chapter 1 General Description
5. The use of a photo mode promises faithful reproduction of halftone. 6. The use of an auto power-off function promises power-saving operation. 1–1 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 20: Specifications
Transfer Corona Separation Curvature + static eliminator Cleaning Blade Fixing Heat roller (1000 W for 120V model; 1050 W for 230V model) 1–2 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 21: Performance
B4, A4 • Label paper (recommended by Canon) A4/LTR • Heavy paper (up to 128 g/m *May be used, but may not feed properly. 1–3 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 22 • Cassette Feeding Module-C1 • MS-C1* • Stapler Sorter-L1* • Control Card IV N • Remote Diagnostic Device II *Applies to the NP7161 only. 1–4 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 23: Others
Keep wrapped, and avoid humidity. Copy paper Consumables Avoid direct sunlight, and store at 40 C, 85% or less. Toner Specifications subject to change without notice. 1–5 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 24 B5 (182 257mm) A4R (297 210mm) B5R (257 182mm) (70.7%) Reduce (81.6%) (86.5%) (200%) (141.4%) Enlarge (122.4%) (115.4%) Specifications subject to change without notice. 1–6 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 25 11" 17" 11" 17" (200%) LTRR 11" 17" 11" 17" Enlarge (129.4%) 11" 17" 11" 17" (121.4%) Specifications subject to change without notice. 1–7 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 26: Names Of Parts
Lower delivery cover Copy tray Lower inside cover Front fixing cover Upper left cover Static eliminator Inside cover Upper delivery cover Figure 1-302 1–8 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 27: Cross Section
[17] Separation roller Primary charging assembly [18] Vertical path roller Blank exposure lamp [19] Pick-up roller [10] No. 6 mirror [20] Registration roller Figure 1-303 1–9 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 28: Operating The Machine
ADF or when the sorter or the right door needs to be checked.) * Applies to the NP7161 only Table 1-401 1–10 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 29 Press it to reset the copy count to 1 or to clear any [28] wrong input when making settings. * Applies to the NP7161 only Table 1-402 1–11 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 30: User Mode
OFF : Disable auto count. Use it to clean the feeder (after placing Cleaning feeder – paper in the ADF and pressing the Start key). 1–12 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 31 O N : Enable drum cleaning. OFF : Disable drum cleaning. * If the drum cleaning settings in service mode No. 519 is turned ON. 1–13 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 32: Routine Maintenance (By The User)
6. Waste Toner Box If the Waste Toner Box indicator on the control panel flashes or turns on, replace the waste toner box. 1–14 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 33 Caution: Do not dispose of the toner cartridge or the waste toner box into fire. Toner can catch fire, causing implosion or explosion. 1–15 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 34: Vii.image Formation
Developing assembly Blanking exposure lamp Primary charging assembly Pre-exposure Fixing lamp assembly Pick-up (multifeeder) Pick-up Static Transfer charging (cassette) eliminator assembly Figure 1-701 1–16 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 35 Flow of copy paper 4. Development Rotation of drum 8. Drum cleaning 5. Transfer Multifeeder Registration 7. Fixing 6. Separation Delivery Cassette Figure 1-702 1–17 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 37: Basic Operation
G. Inputs to and Outputs from C. Basic Sequence of Operations ..2-4 Accessories (1/1) ......2-16 D. Main Motor (M1) Control Circuitry ..2-8 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 39: Chapter 2 Basic Operation
Multifeeder Fixing Separation Transfer assembly Pick-up Copy control tray assembly Cassette 1 Pick-up feeding assembly Cassette 2 Cassette feeding module (*accessory) Figure 2-101 2–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 40: Outline Of The Electrical Circuitry
ADF and the sorter using the communications IC on each controller PCB (IPC communication) and the communications PCB on the DC controller PCB (IPC communication 2). 2–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 41: Power-On
Cassette feeding Switches module ADF controller PCB Sensors Micro- Switches processor Sorter controller PCB Sensors Stapler sorter Micro- Switches or Sorter processor Figure 2-102 2–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 42: Basic Sequence Of Operations At
Scanner home position sensor (PS1) Lens motor (M3) Lens home position sensor (PS2) Mirror motor (M4) Mirror home position sensor (PS3) Figure 2-103 2–4 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 43 (i.e., resets to LSTR ends until the power standard mode after a switch is turned off. specific period of time). Table 2-101 2–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 44: Basic Sequence Of Operations At Copy Start
Scanner home position sensor (PS1) Lens motor (M3) Lens home position sensor (PS2) Mirror motor (M4) Mirror home position sensor (PS3) Figure 2-104 2–6 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 45 Rids the surface of the Discharges the last copy. (last rotation) until the main motor stops. photosensitive drum of charges (surface potential) as post-copying operation. Table 2-102 2–7 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 47: Inputs To The Dc Controller
-A11 MLTPD1 paper widh -A10 sensor 1 See p. 5-9. J743 -A12 Multifeeder -A14 paper widh MLTPD2 PS10 -A13 sensor 2 Figure 2-106 2–9 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 48 '1'. J721 J720 J102 When the level of toner drops below a Toner sensor TNEMP specific level, '1'. Figure 2-107 2–10 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 49: Inputs To The Dc Controller (3/3)
(analog signal) J112 CLTH When the temperature of the drum cleaner Cleaner assembly increases, the voltage lowers. thermistor (analog signal) Figure 2-108 2–11 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 50: Outputs From The Dc Controller
J212 J106 LMPDR LMP_PWM LMPDT J307 J301 J210 To RL1 +24V +24V J212 J106 See p.4-6. DV_DC_CNT DV_DC_DR DV_AC_CNT DV_AC_DR HVT_DR Figure 2-109 2–12 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 51: Outputs From The Dc Controller (2/4)
LNS_COM LNS_A Lens motor See p. 3-4. LNS_A* LNS_B LNS_B* J103 MMR_COM MMR_A MMR_A* See p. 3-4. Mirror motor MMR_B MMR_B* Figure 2-110 2–13 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 52 +24V Feed roller clutch FEED_CL* When '0', CL2 turns on. J797 +24V Multifeed roller clutch MLT_CL* When '0', CL3 turns on. Figure 2-111 2–14 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 53 J551 J101 +24V -A10 BLK_SD -A11 BLK_SCK -A12 Blank exposure BLK_LCK See p. 4-12. -A13 BLK_DEN* lamp -A14 BLK_CNDR* -A15 BLK_PW Figure 2-112 2–15 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 54 Card IV N J121 J722 +24V AS_TXD See the Remote Diagnostic To Remote AS_RXD Device II Service Manual. Diagnostic AS_CNTP Device II Figure 2-113 2–16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 55 V. DISASSEMBLY/ASSEMBLY ....3-11 C. Relationship between Scanner Sensor A. Scanner Drive Assembly ....3-12 and Signals ......... 3-7 B. Lens Drive Assembly ....... 3-18 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 57: Chapter 3 Exposure System
2. In both Reduce and Enlarge, the optical length is longer than in Direct. Direct Optical length Reduce Optical length Enlarge Optical length Figure 3-101 3–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 58 CHAPTER 3 EXPOSURE SYSTEM Copyboard glass Enlarge/reduce Enlarge Reduse Lens No.4/No.5 mirror unit Photosensitive drum Figure 3-102 3–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 59: Lens Drive System
Enlarge controller Reduce Lens home position Lens sensor (PS2) motor (M3) Lens motor drive command Lens home position detection signal (LNSHP) Figure 3-201 3–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 60: Motor Control Circuit
MMR _ COM Mirror MMR _ A MMR _ A* motor Mirror motor MMR _ B drive MMR _ B* circuit Figure 3-202 3–4 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 61: Moving The Lens
*Length varies depending on the selected reproduction ratio. Figure 3-203 The copier enables adjustment of the lens or the No. 4/No. 5 mirror unit home position in service mode. 3–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 62: Scanner Drive System
The distance over which the scanner is moved varies according to the length of copy paper and the selected reproduction ratio. DC controller PCB Scanner motor (M2) Scanner home Foward position sensor (PS1) Reverse Figure 3-301 3–6 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 63: Scanner Motor Control Circuit
Reverse • The scanner is at home position. Scanner home position SCHP sensor (PS1) • The scanner has reached home position. Table 3-301 3–7 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 64: Basic Sequence Of Operations (Scanner)
Start key Sequence WMUP INTR SCFW SCRV SCFW SCRV LSTR STBY Scanner motor (M2) Scanner home position sensor (PS1) Scanning lamp (LA1) Figure 3-303 3–8 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 65: Scanner Movement In Page Separation Mode
The copier does not require paper size registration for the multifeeder. For this reason, it cancels Page Separate mode if the Start key is pressed after selecting the multifeeder. 3–9 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 66: Others
2. Detection of the Original Size by the ADF The size of originals is detected when originals are fed by the ADF. (For details, see the ADF Service Manual.) 3–10 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 67: Disassembly/Assembly
Do not forget to use these washers. 5. As a rule, do not operate the copier with any of its parts removed. 3–11 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 68: Scanner Drive Assembly
3) Slide the scanner motor [3] to the right to detach from the motor mount; then, move it to the cut-off [A] to remove. Figure 3-502 3–12 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 69: Removing The Scanner Drive Cable
8) Detach the lock support [1] from the connector base [2]. 9) Remove the two mounting screws [3], and pull out the connector base [2]. Figure 3-503 3–13 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 70 12) Remove the two tension springs [8], and [10] detach the scanner drive cable (front) [9] and the scanner drive cable (rear) [10]. Figure 3-506 3–14 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 71: Routing The Scanner Drive Cable
Be sure to adjust the mirror position and the tension as indicated later after routing the scanner drive cable. Secure temporarily. Steel ball Wind 11 times. Figure 3-507 3–15 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 72: Adjusting The Position Of The Mirror
No. 1 mirror base (both front and rear). Figure 3-509a (Rear) Figure 3-509b (Front) 4) Detach the mirror positioning tool. 3–16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 73: Adjusting The Tension Of The Scanner Drive Cable
[A] of the tension spring [1] so that the reading of the spring gauge is 95 ±15 g. 10mm 10mm Figure 3-511 Figure 3-510 3–17 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 74: Lens Drive Assembly
(See p.7-11) 4) Disconnect the connector [1]. Figure 3-513 5) Remove the two screws [2], and remove the lens motor [3]. Figure 3-514 3–18 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 75 (See p.4-37) 5) Remove the drum unit. (See p.4-28) 6) Remove the upper right cover. (See p.7- 7) Disconnect the connector [1]. Figure 3-515 3–19 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 76 Figure 3-516 9) Remove the two mounting screws [4], and remove the mirror motor [5]. Figure 3-517 3–20 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 77: Image Formation System
F. Charging Wire ........4-32 A. Outline ..........4-14 G. Developing Assembly ....... 4-37 B. Detecting and Controlling the Level of Toner ......4-16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 79: Chapter 4 Image Formation System
No.5 mirror lamp (LA2) lamp (LA3) Developing Primary assembly corona assembly Static Transfer eliminator corona assembly DC controller PCB Figure 4-101 4–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 80: Basic Sequence Of Operations (Image Formation System)
Developing DC bias Developing AC bias Transfer charging assembly Static eliminator Pre-exposure lamp (LA2) Partial activation Blank exposure lamp (LA3) Scanning lamp (LA1) Figure 4-102 4–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 81: Controlling The Intensity Of The Scanning Lamp
Thermal fuse +24V (FU1) J106 J106 Error AC_24V_ON detection circuit J211 J503 J106 J212 LMPDR Lamp Control LMP_PWM circuit LMPDT detection IC113 Figure 4-103 4–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 82: Operation
If an error is identified in the scanning lamp, the DC controller PCB will cut the AC power to the lamp regulator and, at the same time, will indicate ‘E220’ on the control panel. 4–4 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 83: Protection Mechanisms
If the temperature around the scanning lamp increases abnormally (about 141°C or more) because of a short circuit or the like, the thermal fuse (FU1) will melt to cut the power to the scanning lamp. 4–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 84: Controlling The Primary/Transfer Bias
Primary/transfer high-voltage transformer turns off b. When the primary/transfer bias is on, • When HVT_DR is 1, Oscillation control circuit turns on Primary/transfer high-voltage transformer turns on 4–6 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 85: Controlling The Developing/Separation Static Eliminator Bias
DV _ DC _ CNT Voltage Short circuit detection circuit detection circuit Transformer Oscillation control circuit Voltage Short circuit detection circuit detection circuit Figure 4-109 4–7 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 86: Turning On/Off The Developing Dc Bias
Start key Sequence STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Voltage control Developing DC bias Developing AC bias Figure 4-110 4–8 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 87: Ac Bias/Separation Eliminator Bias
• When DV_AC_DR is 1, oscillation control circuit turns on high-voltage transformer turns on The above condition supplies the static eliminator with separation static eliminator bias. 4–9 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 88: Controlling The Developing
Normally, the optimum image is obtained when the developing DC bias is set at -270 V (CPY_DNS is 2.45V). CPY _ DNS Developing DC bias (V) -600 -500 -400 -300 -200 -100 Darker Copy density Lighter Figure 4-111 4–10 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 89 -382.5 3.48 F7.5 -400 3.64 F7.75 -425 3.86 -450 4.09 F8.25 -475 4.32 F8.5 -500 4.55 F8.75 -525 4.77 -550 5.00 Table 4-102 4–11 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 90: Controlling The Blank Exposure Lamp
-A11 Control Center BLK _ LCK -A12 circuit (10 pcs) BLK _ DEN* -A13 BLK _ CNDR* -A14 BLK _PW -A15 Figure 4-112 4–12 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 92: Outline
Cleaning blade Waste toner feeding screw Developing assembly Waste toner feeding Waste toner screw locked sensor sensor Main motor DC controller PCB Figure 4-201 4–14 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 93 Waste toner assembly Paddle Waste toner Paddle assembly Cassette Waste toner Paddle assembly Figure 4-202 4–15 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 94: Detecting And Controlling The Level Of Toner
10 g of toner inside the developing assembly. In terms of A4 copies, about 200 copies may be made without the addition of toner. 4–16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 95: Monitoring The Waste Toner Feeding Screw
Waste toner feeding screw locked detection signal (TRQMLDT) Flag Cleaning blade Waste toner feeding screw Spring clutch Gear A Photosensitve drum Figure 4-205 4–17 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 96: Monitoring The Waste Toner Box
Comparator circuit Reference voltage Light-blocking plate circuit Stopper Waste toner sensor (light-receiving unit) Waste toner box Waste toner sensor (light-emitting unit) Figure 4-206 4–18 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 97 If the DC controller PCB identifies a waste toner full condition during continuous copying, the copier will discharge copies being processed and turn on the Waste Toner indicator. 4–19 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 98: Control By The Cleaner Thermistor
142 to200% Less than 40 C 16cpm 12cpm 12cpm 12cpm 12cpm 12cpm 40 C or more 16cpm 12cpm 8cpm 12cpm 12cpm 8cpm Table 4-202 4–20 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 99: Auto Density Adjustment (Ae)
Area of AE detection 28 mm (approx.) 56 mm (approx.) Center of image 20 mm (approx.) 70 mm (distance of scanner travel) Figure 4-208 4–21 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 100 F7.5 equivalent (-400 Developing bias DC (V) F7.5 equivalent F5.0 equivalent Density of original Lighter Darker Test Sheet Newspaper Figure 4-209 F7.5 F5.0 Figure 4-210 4–22 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 101: Disassembly/Assembly
Do not forget to use these washers. 5. As a rule, do not operate the copier with any of its parts removed. 4–23 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 102: Scanning Lamp Assembly
2) Holding the bend [A], pull out the scanner as far as the cut-off [B]. Figure 4-301 3) Remove the mounting screw [1], and remove the reflecting cover [2]. Figure 4-302 4–24 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 103: Mounting The Scanning Lamp
Caution: Mount the thermal fuse by reversing the steps used to remove it. Be careful of the orientation of the fuse. Figure 4-305 4–25 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 104: Exposure Assembly
2. Removing the Dust-Proofing Glass 1) Remove the inside cover. 2) Remove the mounting screws [1], and remove the dust-proofing glass [2]. Figure 4-307 4–26 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 105: Cleaning The No. 6 Mirror
4) Remove the mounting screw [1], and remove the developing assembly rail [2]. Figure 4-308 5) Clean the No. 6 mirror [3]. Figure 4-309 4–27 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 106: Drum Unit
• When mounting the drum unit to the copier, be sure to slide it along the rails and work with extra care. 4–28 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 107: Cleaning The Photosensitive Drum
2) Remove the fixing assembly. (See p. 6-8.) 3) Disconnect the connector [1], and remove the mounting screw [2]; then, remove the cleaner thermistor [3]. Figure 4-311 4–29 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 108: Primary Charging Assembly
3) Detach the hook [2], and detach the drum front cover [3]. Figure 4-312 4) Remove the mounting screw [4], and remove the primary charging assembly [5]. Figure 4-313 4–30 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 109: Transfer Charging Assembly
3) Remove the mounting screw [2], and lift the stopper [3] to remove. 4) Pull the transfer charging assembly [4] to the front to remove. Figure 4-314 4–31 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 110: Charging Wire
[a], and remove the guide wire plate [b]. • Transfer Charging Assembly • Primary Charging Assembly Figure 4-315b Figure 4-315a 4–32 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 111 [e], and remove the charging wire [f]. • Primary Charging Assembly • Transfer Charging Assembly Figure 4-317a Figure 4-317b 4–33 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 112 A; then, twist it. Figure 4-319 Primary charging assembly : 13.0 ±0.5 mm Transfer charging assembly : 12.0 ±0.5 mm 4–34 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 113 11) Mount the sheet (front) and the sheet (rear). 12) Mount the stopper and the grid plate. For the transfer charging assembly, mount the guide wire plate. 4–35 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 114: Adjusting The Height Of The Charging Wires
• Primary Charging Assembly • Transfer Charging Assembly Height adjusting Height adjusting Height adjusting screw screw screw Height adjusting screw Figure 4-323b Figure 4-323a 4–36 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 115: Developing Assembly
[2]; then, remove the developing front cover [3]. Figure 4-325 3) Remove the three mounting screws [4], and detach the developing blade cover [5]. Figure 4-326 4–37 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 116: Removing The Developing Cylinder
1) Remove the developing blade. (See p. 4- 37.) 2) Remove the mounting screw [1], and remove the magnet positioning plate [2]. Figure 4-329 4–38 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 117 [11] 7) Remove the grip ring [12], and remove [10] the gear [13]. 8) Remove the gear [14]. [14] [12] [13] Figure 4-332 4–39 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 118 Do not leave fingerprints or oils on [19] the surface of the developing cylinder. As necessary, dry wipe the surface Figure 4-334 with lint-free paper. 4–40 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 119 C. Registration Roller Assembly ... 5-23 D. Cassette Assembly ......5-24 in the Multifeeder ........ 5-9 C. Sequence of Operations (pick-up from multifeeder) ....5-10 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 121: Chapter 5 Pick-Up/Feeding System
Detects delay/stationary jams, measures paper length. Delivery paper sensor Detects delay/stationary jams. Table 5-101 Registration Fixing roller assembly Photosensitive Multifeeder drum Cassette Figure 5-101 5–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 122: Pick-Up From The Cassette
(RG _ CL*) Pick-up solenoid drive command (PU _ SL*) Cassette paper detection signal (CSTPDT) Separation roller Figure 5-201 5–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 123: Sequence Of Operations (Pick-Up/Feeding)
(PS1) Pick-up solenoid (SL1) Registlation paper sensor (PS5) Registlation roller clutch (CL1) Feed roller clutch (CL2) Delivery paper sensor (PS6) Figure 5-202 5–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 124: Operation Of The Cassette Lifter
The rear end guide plate is slid in conjunction with the upward movement of the lifter to improve pick-up performance. Paper detection lever Lifter stopper Lifter Rear guide plate Figure 5-205 5–4 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 125 In the case of paper narrower than B4, the spring remains slack and therefore does not act on the lifter. Auxiliary pressure spring Cut-off Auxiliary pressure lever Lifter Figure 5-206 5–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 126: Detecting The Size Of The Cassette
AB/Inch switching lever.) AB/Inch changing lever Cassette paper size display Cassette paper size changing block Cassette paper size setting knob AB/Inch changing block Figure 5-207 5–6 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 127: Detecting The Cassette Size
No cassette No cassette LTR-R No cassette No cassette *Non-AB/Inch configuration sizes may be registered (default sizes only) in service mode [5]. Table 5-201 5–7 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 128: Pick-Up From The Multifeeder
(CL3) (SL2) Control ring Paper guide Control ring plate Multifeeder paper sensor (PS7) Multifeed roller Separation pad Paper guide plate Figure 5-301 5–8 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 129: Detecting The Size Of Paper In The Multifeeder
PS10 Paper width > 257 = > Paper width > 216 = > Paper width > 182 = > Paper width Table 5-301 5–9 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 130: Sequence Of Operations (Pick-Up From Multifeeder)
(PS1) Multifeed solenoid (SL2) Registration paper sensor (PS5) Registration roller clutch (CL1) Multifeed roller clutch (CL3) Delivery paper sensor (PS6) Figure 5-303 5–10 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 131: Controlling The Registration Clutch
If centering is turned off in Fit Page mode, control is exerted so that the leading edge of copy paper and the leading edge of the image on the photosensitive drum match. 5–11 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 132: Detecting Jams
2. Delivery paper stationary jam detected by the delivery paper sensor (PS6). Registration Multifeed Fixing roller roller assembly Multifeeder Photo- Vertical path sensitive roller drum Cassette Pick-up Feed Separation roller roller roller Figure 5-501 5–12 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 133: Sequence Of Operations (Jam Detection)
Pick-up solenoid (SL1) Feed roller clutch (CL2) Registration paper sensor Normal Error (PS5) Main motor (M1) *1:Varies according to paper size. Figure 5-503 5–13 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 134: Delivery Delay Jam
LSTR Jam check Registration roller clutch (CL1) Normal Error Delivery paper sensor (PS6) Main motor (M1) *1:Varies according to paper size. Figure 5-505 5–14 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 135: Disassembly/Assembly
Do not forget to use these washers. 5. As a rule, do not operate the copier with any of its parts removed. 5–15 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 136: Pick-Up Assembly
• Do not detach the rubber section of the pick-up roller. • When mounting the pick-up roller assembly to the copier, be sure to position it securely face up. 5–16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 137: Assembly
(See p. 5-18.) 2) Remove the registration roller assembly. (See p. 5-23.) 3) Disconnect the connector [1], and remove the two screws [2]. Figure 5-605 5–17 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 138 2) Remove the right door. (See p.7-10) 3) Remove the two mounting screws [1], and remove the separation roller assembly [2]. Figure 5-608 5–18 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 139 • When mounting the roller cover, be sure so that the roller cover will push against Figure 5-612 the bushing. 5–19 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 140: Assembly
2) Remove the lower inside cover. (See p.7- 12.) 3) Disconnect the two connectors [1], and remove the mounting screw [2]. Figure 5-615 5–20 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 141: Removing The Separation Pad
1) Execute service mode 402 (multifeeder holding plate release) in standby state so as to lift the multifeeder holding plate [1]. Figure 5-618 5–21 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 142: Adjusting The Pressure Of The Separation Pad
• If pick-up failure occurs, move the holder in the direction of [A]. • If double feeding occurs, move the holder in the direction of [B]. Figure 5-621 5–22 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 143: Registration Roller Assembly
Figure 5-622 5) Disconnect the connector [4], and remove the three mounting screws [5]; then, detach the registration roller assembly [6]. Figure 5-623 5–23 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 145: Changing The Cassette Size (Ab/Inch)
3) Remove the mounting screw [3]; then, •AB slide the size switching lever [4] to the desired size position, and fix it in place. •INCH Figure 5-628 5–25 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 146: Adjusting The Left/Right Registration
When the adjusting screw [1] is turned counterclockwise, the cassette locking lever plate [2] moves to the rear. Figure 5-629 Figure 5-630 5–26 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 147: Fixing System
A. Outline ..........6-1 A. Fixing Assembly ......... 6-8 B. Controlling the Fixing Temperature ... 6-2 B. Delivery Assembly ......6-16 C. Error Detection Circuit ......6-5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 149: Chapter 6 Fixing System
Figure 6-101 Reference: Fixing heater: 1000 W for the 120 V model, 1050 W for the 230 V model. Thermal switch: 230 ±10°C. 6–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 150: Controlling The Fixing Temperature
180 C or more, less than 190 C 192 C 207 C 182 C 190 C or more 200 C 214 C 190 C Table 6-103 6–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 151 Paper with rough surface mode 160 C General plain paper mode Tracing paper mode 140 C 120 C *1:Varies according to paper width. Figure 6-102 6–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 152 200 C 180 C 160 C 140 C 120 C *1:Varies according to paper width. *2:May be varied in user mode. Figure 6-103 6–4 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 153: Error Detection Circuit
+24V Power supply PCB Error detection Buffer circuit Gate array IC113 IC119 timer Converter Buffer Heater ON detection DC controller PCB Figure 6-104 6–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 155: Disassembly/Assembly
Do not forget to use these washers. 5. As a rule, do not operate the copier with any of its parts removed. 6–7 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 156: Fixing Assembly
2. Locking Mechanism Fulcrum Locking arm Figure 6-202 3. Removing the Fixing Assembly 1) Remove the rear cover. 2) Disconnect the connector [1]. Figure 6-203 6–8 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 157 Figure 6-205 10) Disconnect the connector [7], and free the harness from the harness guide. 11) Remove the two mounting screws [8]. Figure 6-206 6–9 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 158: Removing The Fixing Heater
5) Disconnect all connectors [6] from the connector support plate [5]. 6) Remove the mounting screw [7], and free the harness; then, detach the harness guide [8]. Figure 6-209 6–10 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 159: Removing The Thermal Switch
5. Removing the Thermal Switch Assembly 1) Remove the fixing assembly. (See p. 6-8.) 2) Disconnect the two connectors [1]. Figure 6-212 6–11 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 160: Removing The Main Thermistor
Figure 6-215 3) As shown, pick the hook assembly with pincers, and remove the tension spring [1]. Figure 6-216 6–12 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 161: Removing The Fixing Upper Roller
6) Remove the C-ring [7], and detach the gear [8] and the bushing [9]. 7) Remove the fixing upper roller [10]. [10] Figure 6-220 6–13 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 162: Removing The Fixing Lower Roller
11. Adjusting the Height of the Fixing Inlet Guide Loosen the two adjusting screws [1], and adjust the height of the fixing inlet guide [2]. Figure 6-224 6–14 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 163: Adjusting The Nip
• The copy paper will be stopped when its leading edge is about 100 mm, and will automatically be discharged (See Figure 6-226). 6–15 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 164: Delivery Assembly
1) Remove the delivery roller. (See p. 6-17.) 2) Remove the two stepped screws [1], and free the harness; then, detach the lower separation claw assembly [2]. Figure 6-230 6–16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 165: Removing The Delivery Roller
3) Remove the two E-rings [6] and the two [6] [7] bushings [7]; then, detach the delivery [4] [5] roller [8]. Figure 6-233 6–17 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 167 Removing the High-Voltage Power A. External Covers ........7-9 Supply PCB ........7-20 B. Control Panel ........7-13 J. Lamp Regulator PCB ....... 7-21 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 169: Chapter 7 Externals/Auxiliary Mechanisms
Exhaust fan 1 Drawing Discharges exhaust. Exhaust fan 2 Drawing Ozone Sorter kit fan Drawing *1:If a sorter kit is installed. Table 7-101 7–1 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 170 (FM2, FM5) rotate at half speed. +15.4v +24v FMHLF IC119 IC113 FMON FM-DRIVE FM-DETECT DC controller PCB Figure 7-103 7–2 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 171 If the heat exhaust fan rotation detection signal (FM2ROT) is not detected 0.5 sec after the exhaust fan (FM2, FM4) starts to rotate, error code E805 will be indicated on the control panel. 7–3 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 172: Power Supply
Pre-exposure lamp +5VU +5VR +24V Blank-exposure lamp +5VU CC-IVN +24V Counter Power supply PCB J210-1 +5VU +24V J209-4 +24V Main motor Figure 7-201 7–4 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 173: Power Supply Circuitry
However, the above applies only when the inaccuracy of the AC input is limited to ±10%. Caution: Be sure to disconnect the power plug whenever you have to replace the DC controller PCB. 7–5 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 174: Mirror Heater, Cassette/Drum Heater, And Accessory Cassette Heater
For the ADF and the sorter, the copier’s power supply PCB supplies AC power to the accessory power supply PCB, which generates DC power. 7–6 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 175: Protection Mechanisms Of The Power Supply Circuitry
Be sure to correct the cause that turned on the protection circuit before resetting. Repeated short-circuiting and resetting can cause the fuse built into the power supply PCB to melt. 7–7 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 176: Disassembly/Assembly
Do not forget to use these washers. 5. As a rule, do not operate the copier with any of its parts removed. 7–8 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 177: External Covers
Figure 7-302 [1] Inside cover (2) [2] Lower inside cover (3) The number in parentheses indicates the number of mounting screws used. Figure 7-303 7–9 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 178: Removing The Right Door
[2]. 3) Remove the two mounting screws [3], and remove the upper right cover [4]. [ 2 ] Figure 7-305 7–10 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 179: Removing The Upper Left Cover
When mounting the delivery upper cover, be sure to engage the two cut- offs in the delivery upper cover with the copier’s hooks. Figure 7-308 7–11 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 180: Removing The Lower Inside Cover
3) Remove the mounting screw [2]. 4) Loosen the two mounting screws [3], and remove the lower inside cover [4]. [3 ] Figure 7-309 7–12 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 181: Removing The Control Panel
4) Slide the control panel [4] to the front to remove; then, turn over the control panel. Figure 7-311 5) Disconnect the three connectors [5], and remove the control panel. Figure 7-312 7–13 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 182: Copyboard Glass
When mounting the NP7161’s copyboard glass, make sure that the blue marking on the side of the glass is to the front left. Figure 7-314 7–14 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 183: Removing The Scanner
[2]. [ 1 ] Figure 7-315 2) Disconnect the connector [3], and remove the scanner cooling fan [4]. [4 ] Figure 7-316 7–15 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 184 When mounting the exhaust fan assembly, be sure to engage the two hooks on the exhaust fan assembly with the copier’s cut-offs. Figure 7-319 7–16 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 185 2) Shift down the lever [1], and remove the ozone filter assembly [2]. Figure 7-320 3) Remove the ozone filter [3]. Figure 7-321 7–17 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 186: Removing The Counter Assembly
[2]. 3) Remove the two locking supports [3], and detach the main motor assembly [4]. [ 2 ] Figure 7-323 7–18 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 187: Dc Controller Pcb
• For settings in service mode, enter the values recorded in the Service Label stored behind the front door. 7–19 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 188: Removing The Power Supply Pcb
[2]. 3) Remove the mounting screw [3] and the four locking supports [4]; then, detach the high-voltage power supply PCB [5]. Figure 7-326 7–20 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 189: Lamp Regulator Pcb
2) Disconnect the two connectors [1] of the lamp regulator PCB. 3) Remove the three locking supports [2], and detach the lamp regulator PCB [3]. Figure 7-327 7–21 COPYRIGHT © 1998 CANON INC. CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 191 A. Installing the Heater Switch ..... 8-25 III. RELOCATING THE MACHINE ....8-12 B. Mounting the Cassette/Drum Heater 8-26 C. Installing the Mirror Heater ....8-27 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 193: Chapter 8 Installation
7. Keep the copier 10 cm (3.9 in) or more away from any wall to provide adequate space for machine operation. 10cm/3.9in. min. 50cm/19.7in. 50cm/19.7in. min. min. 50cm/19.7in. min. Figure 8-101 8–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 194: Unpacking And Installation
Holding the grips at the bottom (both sides), move the copier to the site of installation. G r i p s G r i p s 8–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 195: Removing The Metal Fixings
(1 each at front and rear). (You release plate (rear) will not be using the removed fixing assembly releasing plate.) Fixing delivery assembly 8–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 197 Datum compteur Zahler note Notiz Turn the toner supply lever clockwise to lock the developing assembly in place; then, close the copier top. 8–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 198: Cleaning The Parts And Making Checks
Thereafter, set the static eliminator and the static eliminator cleaner back to their initial positions. Static eliminator cleaning brush Remove the inside cover (2 screws). Screws 8–6 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 199 Turn the toner supply lever clockwise to lock the developing assembly in place. Close the front door. 8–7 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 200: Checking The Images/Operations And User Mode
3) Check to see that ‘403’ is indicated. 4) Press the Start key to start drum unit installation mode. 8–8 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 201 Clean up the area around the machine. If you are installing accessories (e.g., sorter), install them according to their respective Installation Procedures. Fill out the Service Sheet. 8–9 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 202: Supplying Toner
Put the toner cartridge over the developing assembly, and push it in fully to the rear. 8–10 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 203 Slide the developing assembly into the copier, and turn the toner supply lever clockwise to lock the developing assembly in place. Close the front door. 8–11 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 204: Relocating The Machine
Tape the front door, multifeeder tray, and cassette in place. Place A3 copy paper on the copyboard glass, and tape the copyboard in place. 8–12 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 205: Iv. Installing The Control Card Iv N
Figure 8-403 5) Connect the copier’s power plug, and turn on the power switch to check the operation of the Control Card IV N. 8–13 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 206: Installing The Remote Diagnostic Device Ii
4. Be sure to identify the screws by type (length, diameter) and location. 5. Be sure to set the settings data to the computer at the service station in advance. 8–14 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 207 [4] as shown. Figure 8-502 3) Remove the copier’s rear cover; then, remove the sheet [5], and cut off the face plate [6]. Figure 8-503 8–15 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 210 BAT1 LED5 SW2 bits Settings LED6 [18] LED4 SW2-1 SW2-2 SW2-3 SW2-4 SW2-5 Figure 8-511 SW2-6 See step 9). SW2-7 SW2-8 Table 8-502 8–18 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 211 Table 8-503 13) Shift bit 6 of the DIP switch [20] (SW2) to OFF. [20] LED1 LED2 LED3 BAT1 LED5 LED6 LED4 Figure 8-513 8–19 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 212 Caution: Upon completion of each try, check with the service station to make sure that the settings have been made successfully. 8–20 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 213 19) Press the copier’s Copy Start key so that [27] LED3 [27] (pink) flashes in response. LED1 LED2 LED3 BAT1 LED5 LED6 LED4 Figure 8-518 8–21 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 215: Installing The Accessory Counter
Figure 8-602 3) Connect the connector [3] of the accessory counter to the connector [4] of the counter assembly. Figure 8-603 8–23 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 216 6) Connect the copier’s power plug, and turn on the power switch to check the operation of each counter. 8–24 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 217: Vii.installing The Accessory Heater
2) Mount the heater switch [2] with two screws [3]. Figure 8-702 3) Lead the heater switch harness through the clamp, and connect it to the connector [4]. Figure 8-703 8–25 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 218: Mounting The Cassette/Drum Heater
3) Secure with two mounting screws [2]. Figure 8-705 4) Lead the cassette/drum heater harness [3] through the harness guide, and connect the connector [4]. Figure 8-706 8–26 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 219: Installing The Mirror Heater
2) Mount the mirror heater [1] with two screws [2]. Figure 8-707 3) Lead the mirror heater harness [3] through the harness guide, and connect the connector [4]. Figure 8-708 8–27 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 221 A. Copier ..........9-1 IV. SCHEDULED SERVICING TABLE ..9-5 II. CONSUMABLES AND DURABLES ..9-2 A. Copier ..........9-5 A. Copier ..........9-2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 223: Chapter 9 Maintenance And Servicing
Ozone filter (exhaust) 60,000 Or, 1 yr. FE5-3956-000 Note: The above values are estimates only, and are subject to change based on future data. 9–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 224: Consumables And Durables
Heat discharge roller FE5-3932-000 120,000 Delivery roller FE5-3927-000 120,000 Note: The above values are estimates only, and are subject to change based on future data. 9–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 225: Scheduled Servicing Chart
Clean the fixing/delivery assembly: • fixing (upper/lower) roller • separation claw (upper/lower) Lubricant Provide scheduled servicing according to the number of copies made. 9–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 226 Record the latest counter reading. Fill out the Service Sheet, and report to the person in charge. 9–4 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 227: Scheduled Servicing Table
Fixing upper roller Fixing lower roller Separation claw Look for damage on the claw (upper/lower) tip and for soiling by toner. Heat roller Delivery roller 9–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 228 CHAPTER 9 MAINTENANCE AND SERVICING Intervals Unit Item Remarks every every every yearly 60,000 120,000 180,000 Transfer charging wire Others Static eliminator 9–6 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 229 B. Faulty Feeding ........ 10-69 B. ADF ..........10-103 VI. ARRANGEMENT AND FUNCTIONS C. Sorter ..........10-104 OF ELECTRICAL PARTS ....10-70 D. Cassette Feeding Module .... 10-104 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 231: Chapter 10 Troubleshooting
Yes or No, and if your answer matches the answer given under “Yes/No,” take the action given under “Actions”; otherwise, go to the next step and work likewise. 10–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 232 PCB” means you are expected to make the following connections: Connect the positive probe of your meter to J109-1 (+), and Connect the negative probe of your meter to J109-2 (-). 10–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 233: Image Adjustment Basic Procedure
*A full turn causes a change of 0.5 mm. 2: When turning the adjusting screw clockwise, be careful that the height of the charging wire is not less than 10.0 mm. 10–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 234: Points To Note For Scheduled Servicing
Lint-free paper Dry wiping Pick-up roller Fixing lower roller Multifeeder pick-up roller Transfer guide Moist cloth Cleaning Part Tool/solvent Remarks Waste toner box Checking/collecting 10–4 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 235: Standards And Adjustments
Make adjustments so that the image leading edge margin on copies made of the Test Sheet in Direct is 2.5 ±1.5 mm. [unit: 0.21 mm] [settings: 0 to 500] 2.5 1.5mm Figure 10-202 10–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 236: Left/Right Registration (Cassette)
When the adjusting screw [1] is turned counterclockwise, the cassette locking lever plate [2] moves to the rear. Figure 10-203 Figure 10-204 10–6 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 237: Exposure System
Route the cable following steps [1] through [7], and perform the steps under “Adjusting the Tension of the Cable” and “Adjusting the Position of the Mirror.” Secure temporarily. Steel ball Wind 11 times. Figure 10-205 10–7 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 238: Adjusting The Position Of The Mirror
3) Tighten the mounting screw [2] on the cable metal fixing of the No. 1 mirror base (both front and rear). Figure 10-207a (Rear) Figure 10-207b (Front) 4) Detach the mirror positioning tool. 10–8 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 239: Adjusting The Tension Of The Scanner Drive Cable
[A] of the tension spring [1] so that the reading of the spring gauge is 95 ±15 g. 10mm 10mm Figure 10-208 Figure 10-209 10–9 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 240: Image Formation System
To remove the transfer charging assembly, remove the sheet (front) [c] and the sheet (rear) [d]. • Transfer Charging Assembly • Primary Charging Assembly Figure 10-211b Figure 10-211a 10–10 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 241 A ; then, twist it. • Primary charging assembly : 13.0 0.5 mm • Transfer charging assembly : 12.0 0.5 mm 10–11 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 242 11) Mount the sheet (front) and the sheet (rear). 12) Mount the stopper and the grid plate. For the transfer charging assembly, mount the guide wire plate. 10–12 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 243: Adjusting The Height Of The Charging Wires
• Transfer Charging Assembly • Primary Charging Assembly Height adjusting Height adjusting Height adjusting screw screw screw Height adjusting screw Figure 10-218a Figure 10-218b 10–13 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 244: Pick-Up/Feeding System
2) Loosen the mounting screw [1] on the left side of the cassette; then, slide the size switching block [2] to the desired size position, and fix it in position. •AB •INCH Figure 10-220 10–14 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 245 3) Remove the mounting screw [3]; then, slide the size switching lever [4] to the desired size position, and fix it in place. •AB •INCH Figure 10-221 10–15 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 246: Adjusting The Height Of The
If the nip is as indicated in Table 10-201, no adjustment is necessary. If the nip is not as indicated, change the position of the pressure spring [1]. Figure 10-223 10–16 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 247 When you execute nip measurement mode (service mode), the copy paper will stop half way through the delivery slot. It will then be discharged fully in about 15 sec. 10–17 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 248: Electrical System
7) Press the Start key, and store the setting. • Repeat steps 5) through 7) until an optimum image is obtained. 8) Press the Reset key to end service mode. 10–18 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 249: Ae Adjustment
0 and 255. If not, execute ‘303’ (AE slope adjustment) in service mode. 9) Press the Reset key to end service mode. 10–19 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 250 5) Press the Start key to store the new setting. • Repeat steps 2) through 5) until an optimum image is obtained. 6) Press the Reset key to end service mode. 10–20 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 251 5) Press the Start key to store the new setting. • Repeat steps 2) through 5) until an optimum image is obtained. 6) Press the Reset key to end service mode. 10–21 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 252: After Replacing The Dc Controller Pcb
7) Enter the settings of each service mode by referring to the service mode label kept behind the front door. 8) Press the Reset key to end service mode. 10–22 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 253: Checking The Photointerrupters
• Refer to the state of the copy count indicator LEDs. (Tables use ‘1’ to indicate ON, and ‘0’ to indicate OFF.) Figure 10-228 10–23 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 254 When the light-blocking plate is at sensor, 1a=1 remove the sensor waste toner 1a=0 When the light-blocking plate is not at sensor, box. 10–24 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 255: Image Faults
3. Checking the Copyboard Cover and Copyboard Glass If soiled, clean it using a solution of mild detergent or alcohol. If scratches are found, replace it. 10–25 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 256: Checking The Charging Assembly
Check to make sure that the surface of the developing cylinder is coated with an even layer of toner. 6. Checking the Paper a. Check if the paper is of a type recommended by Canon. b. Check if the paper is not moist. Try using paper fresh out of package.
Page 259: Troubleshooting Image Faults
Lamp regulator PCB Replace the lamp regulator PCB. Is End. the problem corrected? DC controller PCB Replace the DC controller PCB. 10–29 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 260: The Copy Is Too Light
Photosensitive End. Replace the drum unit. Is the problem drum corrected? Developing Check the control system of the bias control developing bias. 10–30 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 261: The Copy Has Uneven Density
1. Clean all charging wires once Copy paper again, and check the height of the charging wires once again. 2. Try replacing the copy paper. 10–31 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 262: The Copy Is Foggy. (Overall)
PCB. Is the problem corrected? Lamp regulator PCB Replace the lamp regulator PCB. Is End. the problem corrected? DC controller PCB Replace the DC controller PCB. 10–32 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 263: The Copy Is Foggy. (Vertical)
2. Check the separation claw. of the fixing upper roller? Check to make sure that the fixing assembly inlet is not soiled. 10–33 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 264: The Copy Has White Spots
Transfer charging assembly the shield plate. Is the problem corrected? Separation static Clean the separation static eliminator. End. eliminator Is the problem corrected? 10–34 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 265: The Copy Has White Spots
1. Check the scanner rail for a foreign Scanner cable location on all copies? object. 2. Adjust the tension of the scanner cable. Charging wire Clean each charging wire. 10–35 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 266: The Back Of The Copy Is Soiled
If so, replace the heat discharging roller. 3. Clean the fixing assembly inlet guide. Clean the delivery roller and the Delivery assembly separation claw. 10–36 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 267: The Copy Has Faulty Fixing
Adjust the fixing lower roller pressure indicated? pressure. Copy paper Try recommended paper. If the results are good, advise the user to use recommended paper. 10–37 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 268: The Copy Has A Displaced Leading Edge
24 V while the scanner is moving Check the wiring from J106 on the forward? DC controller PCB to CL1; if normal, replace the DC controller PCB. 10–38 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 269: The Copy Has A Blurred Image
Check the scanning system. it with a copy made in Direct. Is the Feeding assembly problem noted in a different location? Check the feeding assembly. 10–39 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 270: The Copy Has Poor Sharpness
As necessary, clean and lubricate. drive assembly mirror? Does the part, when pushed by hand, move smoothly? Photosensitive drum Replace the drum unit. 10–40 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 271: The Copy Is Blank
Does the scanning lamp remain on Make checks according to the during copying operation? instructions under “The scanning lamp fails to turns off.” 10–41 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 272: Troubleshooting Malfunctions
• Instruct the user not to turn on the copier before the room is warm enough. Replace the DC controller. DC controller PCB 10–42 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 273: E001
Check the wiring from the DC controller PCB power supply PCB to the DC controller PCB; if normal, replace the DC controller PCB. 10–43 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 274: E002/E003
• Instruct the user not to turn on the copier before the room is warm enough. DC controller PCB Replace the DC controller PCB. 10–44 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 275: E004
PCB. Is the voltage about 24 V? Main motor (M1) Replace the main motor. Is the problem End. corrected? DC controller PCB Replace the DC controller PCB. 10–45 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 276: E013
PCB. Does the voltage change PCB. from about 0 to about 24 and then to about 0 V when the Start key is pressed? 10–46 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 277: E031
(See the instructions on how to check the (PS1) photointerrupters.) if normal, replace the sensor. DC controller PCB Replace the DC controller PCB. 10–47 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 278: E208
(See the instructions on how to check the controller PCB to the sensor; photointerrupters.) if normal, replace the sensor. DC controller PCB Replace the DC controller PCB. 10–48 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 279: E220
Actions Malfunction Turn off and then on the power switch. Is the End. problem corrected? DC controller PCB Replace the DC controller PCB. 10–49 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 280: E712
Replace the DC controller PCB. Is the End. problem corrected? Remote Diagnostic See the Service Manual of the Device II Remote Diagnostic Device II. 10–50 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 281: E800
DC controller PCB to temperature). the thermistor; if normal, Do the reading remain as ‘111’? replace the thermistor. DC controller PCB Replace the DC controller PCB. 10–51 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 282: Ac Power Is Absent
DC controller PCB? Control panel PCB Replace the control panel PCB. Is the End. problem corrected? DC controller PCB Replace the DC power supply PCB. 10–52 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 283: Dc Power Supply Is Absent
J208-2 +24V J208-3 J208-5 +5VU J208-4 J208-5 +5VR J209-4 J209-3 +24V J210-1 J210-2 +24V J210-8 J210-2 +5VU J211-7 J211-1 +24V J211-5 J211-1 +5VU 10–53 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 284: The Scanner Fails To Move
DC controller PCB Check the wiring from the DC controller PCB to the scanner motor; if normal, replace the DC controller PCB. 10–54 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 285: The Lens Fails To Move
DC controller PCB Check the wiring from the DC controller PCB to the mirror motor; if normal, replace the DC controller PCB. 10–55 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 286: The Scanning Lamp Fails To Turn On
J105-5 (-) on the DC controller PCB. Does the voltage change from about 0 to 5 V when the Start key is pressed? 10–56 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 287: The Pre-Exposure Lamp Fails To Turn On
DC controller PCB Check the wiring from the DC controller PCB to the blank exposure lamp; if normal, replace the DC controller PCB. 10–57 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 288: Pick-Up Fails. (Cassette)
B9(-). Does the voltage reading change from normal, replace SL1. 0 to 24 V when the Start key is pressed? DC controller PCB Replace the DC controller PCB. 10–58 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 289: Pick-Up Operation Fails
Start key is pressed? to registration roller clutch; if normal, replace the clutch. DC controller PCB Replace the DC controller PCB. 10–59 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 290: The Fixing Heater Fails To Turn On
Does the Add Toner indicator turn controller PC to the control panel PCB; if normal, replace the control panel PCB. DC controller PCB Replace the DC controller PCB. 10–60 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 291: The Add Toner Indicator Fails To Turn Off
PCB to the control indicator turn on?” panel PCB; if normal, replace the control panel PCB. DC controller PCB Replace the DC controller PCB. 10–61 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 292: The Waste Toner Box Full Indicator Fails To Turn Off
Does the Add Paper indicator turn controller PCB to the control panel PCB; if normal, replace the control panel PCB. DC controller PCB Replace the DC controller PCB. 10–62 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 293: The Add Paper Indicator Fails To Turn Off
Does the Jam indicator turn on? controller PCB to the control panel PCB; if normal, replace the control panel PCB. DC controller PCB Replace the DC controller PCB. 10–63 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 294: The Jam Indicator Fails To Turn Off
Control panel PCB Replace the control panel PCB. Does the End. indicator turn on? DC controller PCB Replace the DC controller PCB. 10–64 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 295: The Set Control Card Indicator Fails To Turn Off
Set the control card correctly. DC controller PCB Can copies be made? Replace the DC controller PCB. Control Card IV N Replace the Control Card IV 10–65 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 296: Troubleshooting Feeding Problems
The instructions on how to remove copy paper in the following tables are organized according to location. You may find out the location and the nature of each jam in service mode (‘107’). Figure 10-501 10–66 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 297: Pick-Up/Feeding Assembly
Try paper recommended by Canon. Is the Advise the user to use problem corrected? recommended paper. Pick-up roller Check the pick-up roller for deformation and wear. 10–67 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 298: Fixing/Delivery Assembly
Does the delivery roller move smoothly? Check the delivery roller drive drive assembly assembly. Check the copy to see if it has Leading edge a leading edge. margin 10–68 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 299: Faulty Feeding
Lower roller Is the lower roller (nip) as indicated? Adjust it pressure Upper/lower Try replacing the top unit or roller the lower roller. 10–69 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 300: Arrangement And Functions Of Electrical Parts
CHAPTER 10 TROUBLESHOOTING VI. ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS A. Sensors and Switches PS11 PS10 Figure 10-601 10–70 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 301 Multifeeder paper width detection 1 Multifeeder paper width detection 2 PS10 PS11 Right door open/closed detection Switch Heater switch (accessory) Front door switch Table 10-601 10–71 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 302: Motors, Fans, Clutches, And Solenoids
CHAPTER 10 TROUBLESHOOTING B. Motors, Fans, Clutches, and Solenoids Figure 10-602 10–72 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 303 Heat discharge Heat discharge Heat discharge (accessory) Registration roller clutch Clutch Feeding clutch Multifeeder pick-up clutch Pick-up solenoid Solenoid Multifeeder pick-up solenoid Table 10-602 10–73 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 304: Heaters, Lamps, And Others
CHAPTER 10 TROUBLESHOOTING C. Heaters, Lamps, and Others CNT1 CNT2 Figure 10-603 10–74 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 305 TSW1 Fixing roller surface temperature detection 1 Thermistor Fixing roller surface temperature detection 2 Ambient temperature detection Cleaner thermistor Varistor Varistor Table 10-603 10–75 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 306: Pcbs
Waste toner full detection Waste toner sensor Cassette size detection Cassette size switch PCB ADF and sorter DC power supply Accessory power supply PCB Table 10-604 10–76 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 307: Variable Resistors, Light-Emitting Diodes, And Check Pins By Pcb
1. DC Controller PCB J101 J112 J104 J102 J120 J103 J109 J108 J107 J124 J106 J110 SW102 J131 J122 J121 J105 Figure 10-605 10–77 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 308 11" 17" LTR 64.7% 50.0% Table 10-606 A-configuration (2R2E) Ratio 200% 200.0% A4 A3 141.4% 100% 100.0% A3 A4 70.7% 50.0% Table 10-607 10–78 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 309 B4 A3, B5 A4 115.4% 100% 100.0% A3 B4, A4 B5 86.5% B4 A4 81.6% A3 A4, B4 B5 70.7% 50.0% Table 10-609 10–79 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 310: Power Supply Pcb
CHAPTER 10 TROUBLESHOOTING 2. Power Supply PCB J210 J208 J209 J211 J212 J204 J206 J203 Figure 10-606 3. Lamp Regulator PCB J503 J501 Figure 10-607 10–80 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 311: High-Voltage Power Supply Pcb
CHAPTER 10 TROUBLESHOOTING 4. High-Voltage Power Supply PCB J304 J301 J305 VR82 VR83 VR52 VR81 J302 J303 VR141 VR52 J306 Figure 10-608 10–81 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 312: Service Mode
• The copier will return to the condition in step 3) in response to a press on the AE key while it is executing service mode. 10–82 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 313: Using Adjust Mode And Function Mode
AE_ADJ LMP_ADJ AE_SLOP REGIST LE_BLANK PG_RGST PG_BLANK TE_BLANK MF_ARCH CST1_ARCH CST2_ARCH LIGHT_5 LNS_HP MIRR_HP LNS_TBL MIRR_TBL MLT_CL MLT_TMG MODEL_SW DOC_ST_L Figure 10-701 10–83 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 314: Display Mode [1]
Indicates alarm codes of the ADF. (See Table 10- 704.) Indicates the version of the ROM of the ADF. Indicates the version of the program. 10–84 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 315 Registration paper sensor timing jam Delivery delay jam Delivery stationary jam Right door open jam PS11 Power-on jam PS5, PS6 ADF jam Sorter jam Table 10-702 10–85 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 316 100’s place. Code Description Feeding delay Feeding stationary Timing Staple (stapler sorter only) Power-on Door open Table 10-705 10–86 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 317 Number 7 key + Zoom key Number 8 key - Zoom key Number 9 key Reset key Fit Image key Additional Functions key Table 10-708 10–87 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 318: I/O Display Mode [2]
Indicates PIO1B. Indicates the state of input. (See p. 10-89.) Indicates PI03B. Indicates the state of input. (See p. 10-89.) Not used. Not used. 10–88 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 319 Detects the width of paper in the MLTPDT1 J107-A11 multifeeder (1). Detects the width of paper in the PS10 MLTPDT2 J107-A14 multifeeder (2). Table 10-709a 10–89 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 321 Main motor (M1) lock detection J106-16 ON: motor off. – – – – – – – – – – – – – – – Table 10-709c 10–91 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 322: F. Adjust Mode [3]
A higher setting will delay de-activation of the 0 – 100 mode (de-activation of the pick-up roller clutch, thereby increasing the arching. (unit: clutch). 0.42 mm) 10–92 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 323 • If thick paper is not fed as far as the Use this mode if pick-up failure occurs registration roller, increase the setting. when using thick paper. 10–93 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 324: Function Mode [4]
Initializes the back-up RAM. Press ‘1’ on the keypad and the Start key in sequence. (The power will turn off, initializing all RAM data.) 10–94 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 325: Option Mode [5]
Sets the fixing target temperature for A5R. Standard target temperature Standard target temperature +10°C Standard target temperature + 5°C Standard target temperature - 5°C Standard target temperature - 10°C 10–95 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 326 GOVERNMENT LETTER R 203.2 x 266.7 ARGENTINE LETTER 280.0 x 220.0 GOVERNMENT LETTER 266.7 x 203.2 KOREAN LEGAL 268.0 x 190.0 Table 10-710 10–96 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 327: Counter Mode [6]
Count clear A press on the Start key will initialize the count (601 to 605), returning it to ‘0’ on the control panel. 10–97 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 328: Application Mode [7]
Adjusts the ADF original page stop 1–255 A lower setting will move the original page position. stop position in the direction of delivery. (unit: 0.116 mm) 10–98 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 329: Self Diagnosis
• The triac is identified as having a short • The triac has a short circuit. E004 circuit. • The DC controller PCB is faulty. 10–99 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 330 • The intervals of the zero-cross signals • The power supply frequency is faulty. E261 exceed the allowed intervals for 50/60 Hz. • The power supply PCB is faulty. 10–100 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 331 • The ozone filter is clogged. E821 or more. • The cleaner thermistor (TH3) has poor contact or an open circuit. • The DC controller PCB is faulty. 10–101 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 332 3) The copier will automatically turn off, clearing the error. 2. E202 may be checked using ‘108’ in service mode (error history indication). 10–102 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 333: B. Adf
To continue making copies while the ADF is out of order, disconnect the lattice connector on the ADF side, open the ADF, and place an original on the copyboard glass. 10–103 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 335: Appendix
D. SPECIAL TOOLS LIST ......A-7 B. SIGNALS AND ABBREVIATIONS ..A-2 E. SOLVENTS AND OILS ......A-8 C. GENERAL CIRCUIT DIAGRAM ..A-5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 337 Full-speed Half-speed rotation rotation Exhaust fan 1 (FM2) Exhaust fan 2 (FM4) Cassette / Drum heater (H2) Mirror heater (H3) Counter 1 (CNT1) A–1 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 338 LENS MOTOR DRIVE command LNSHP LENS HOME POSITION DETECTION signal MLT_CL* MULTIFEED ROLLER CLUTCH DRIVE command MLT_SL* MULTIFEED SOLENOID DRIVE command MLTPD0 MULTIFEEDER PAPER DETECTION signal A–2 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 339 2. Abbreviations AE ROTATION INTR INITIAL ROTATION LSTR LAST ROTATION SCFW SCANNER FORWARD SCRV SCANNER REVERSE STBY STANDBY WMUP WARM-UP WMUPR WARM-UP ROTATION A–3 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 341 ROLLER CLUTCH SENSOR WIDHT WIDHT SENSOR J701 J755 CLUTCH WASTE TONER FEEDING SENSOR 2 SENSOR 1 TO CFM TO SORTER SCREW LOCKED SENSOR A–5 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 343: Special Tools List
Door switch TKN-0093 Point of use Front door Mirror positioning FY9-3009 For adjusting the tool No. 1/No. 2 mirror position (front/rear as a pair) A–7 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 344: Solvents And Oils
(paraffin family) Lubricant oil Mineral oil • CK-0524 (100 cc) (paraffin family) Lubricating: Lubricant oil Slicone oil • CK-0551 (20 g) scanner rail A–8 COPYRIGHT © 1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Page 345 Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPT. 1 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIV. CANON INC. Printed in Japan REVISION 0 (AUG. 1998) [23715] 5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302-8501, Japan...
Page 346 This publication is printed on 70% reprocessed paper. PRINTED IN JAPAN (IMPRIME AU JAPON) 0998S0.7-1...

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Np7161

Canon NP7160 Service Manual

Table of Contents

Chapter 2 Basic Operation

Chapter 3 Exposure System

Chapter 4 Image Formation System

Chapter 5 Pick-Up/Feeding System

Chapter 6 Fixing System

Chapter 7 Externals/Auxiliary Mechanisms

Chapter 8 Installation

Chapter 9 Maintenance and Servicing

Chapter 10 Troubleshooting

Quick Links

Chapters

Troubleshooting

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Summary of Contents for Canon NP7160