Page 1: Service Manual
Brother Laser MFC SERVICE MANUAL MODEL: FAX-2840/2845/2890 FAX-2940/2950/2990 MFC-7240/7290 Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times. April 2012 SM-FAX133 8X5E03 Confidential...
Page 2 MFC-7290 LCD Back Light Handset Scanner Function © Copyright Brother 2012 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. All other product and company names mentioned in this manual are trademarks or registered trademarks of their respective holders.
Page 3 Each company whose software title is mentioned in this manual has a Software License Agreement specific to its proprietary programs. Any trade names and product names of companies appearing on Brother products, related documents and any other materials are all trademarks or registered trademarks of those respective companies.
Page 4: Table Of Contents
CONTENTS REGULATION ......................vi SAFETY INFORMATION..................xii CHAPTER 1 SPECIFICATIONS 1. SPECIFICATIONS LIST ....................... 1-1 General ..........................1-1 Network Connectivity ......................1-6 Service Information......................1-6 Supplies ..........................1-7 Paper ........................... 1-9 1.5.1 Paper handling ...................... 1-9 1.5.2 Media specifications ....................1-9 Printable &...
Page 5 Communication Error Codes ..................... 2-21 Error Cause and Remedy ....................2-24 Paper Feeding Troubleshooting ..................2-60 3.5.1 Pickup function of paper tray does not work ............2-60 3.5.2 No feeding ......................2-60 3.5.3 Double feeding ....................2-61 3.5.4 Dirt on paper......................2-61 3.5.5 Paper feeding at an angle ...................
Page 6 6. OVERVIEW OF GEARS....................... 3-7 7. HARNESS ROUTING......................... 3-10 8. DISASSEMBLY FLOW CHART....................3-23 9. DISASSEMBLY PROCEDURE ....................3-24 Preparation ........................3-24 Paper tray .......................... 3-26 Cord hook .......................... 3-29 Back cover ......................... 3-30 Outer chute ASSY ......................3-31 Fuser unit cover ......................... 3-32 Front cover ASSY ......................
Page 7 9.37 T1 clutch ASSY, Registration clutch ASSY ............... 3-68 9.38 Main frame L ASSY ......................3-70 9.39 Develop drive sub ASSY, Develop gear joint/52 ............... 3-72 9.40 Motor drive sub ASSY, Main motor ................... 3-74 9.41 Internal temperature thermistor ..................3-76 9.42 Eject sensor PCB ASSY ....................
Page 8 1.3.3 Scanning lock (Function code: 06) ................ 5-6 1.3.4 ADF performance test (Function code: 08) ............5-6 1.3.5 Monochrome image quality test pattern (Function code: 09) ........ 5-7 1.3.6 Worker switch (WSW) setting and printout (Function code: 10, 11)...... 5-8 1.3.7 Operational check of LCD (Function code: 12) ...........
Page 9: Regulation
THIS EQUIPMENT IS DESIGNED TO WORK WITH A TWO WIRE ANALOGUE PSTN LINE FITTED WITH THE APPROPRIATE CONNECTOR. Brother advises that this product may not function correctly in a country other than where it was originally purchased, and does not offer any warranty in the event that this product is used on public telecommunication lines in another country.
Page 10 Disconnect Device This product must be installed near an electrical socket that is easily accessible. In case of emergencies, you must disconnect the power cord from the electrical socket to shut off power completely. Wiring Information (U.K. only) If you need to replace the plug fuse, fit a fuse that is approved by ASTA to BS1362 with the same rating as the original fuse.
Page 11 If you have questions about what will disable alarm equipment, call your telephone company or a qualified installer. If you are not able to solve a problem with your product, call Brother Customer Service. (See Brother numbers in the Basic User's Guide.)
Page 12 • Consult the dealer or an experienced radio/TV technician for help. IMPORTANT • Changes or modifications not expressly approved by Brother Industries, Ltd. could void the user's authority to operate the equipment. • A shielded interface cable should be used to ensure compliance with the limits for a Class B digital device.
Page 13 Industry Canada Compliance Statement (For Canada) This Class B digital apparatus complies with Canadian ICES–003. Cet appareil numérique de la classe B est conforme à la norme NMB–003 du Canada. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of this device.
Page 14: Internal Laser Radiation
The purpose of the International ENERGY STAR Program is to promote the development and popularization of energy-efficient office equipment. ® As an ENERGY STAR Partner, Brother Industries, Ltd. has determined that this product ® meets the ENERGY STAR specifications for energy efficiency. Confidential...
Page 15: Safety Information
SAFETY INFORMATION Caution for Laser Product (WARNHINWEIS fur Laser drucker) WARNING WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injuries. CAUTION CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injuries.
Page 16 To use the Machine Safely Please keep these instructions for later reference and read them before attempting any maintenance. If you do not follow these safety instructions, there is a possibility of a fire, electrical shock, burn or suffocation. WARNING ELECTRICAL HAZARDS Failure to follow the warnings in this section may create the risk of an electrical shock.
Page 17 Power Cord Safety: • This product is equipped with a 3-wire grounded plug. This plug will only fit into a grounded power outlet. This is a safety feature. DO NOT defeat the purpose of the grounded plug. • Use only the power cord supplied with this product. •...
Page 18 HOT SURFACE After you have just used the product, some internal parts of the product will be extremely hot. Wait at least 10 minutes for the product to cool down before you touch the internal parts of the product. When moving the product, grasp the side handholds firmly from the front of the product. Caution for Laser Product (WARNHINWEIS fur Laser drucker) CAUTION: When the machine during servicing is operated with the cover open, the...
Page 19: Additional Information
Additional Information When servicing the optical system of the machine, be careful not to place a screwdriver or other reflective object in the path of the laser beam. Be sure to take off any personal accessories such as watches and rings before working on the machine. A reflected beam, though invisible, can permanently damage the eyes.
Page 20: Chapter 1 Specifications
CHAPTER SPECIFICATIONS Confidential...
Page 21 CHAPTER 1 SPECIFICATIONS This chapter lists the specifications of each model. CONTENTS 1. SPECIFICATIONS LIST ....................1-1 1.1 General........................1-1 1.2 Network Connectivity..................... 1-6 1.3 Service Information....................1-6 1.4 Supplies......................... 1-7 1.5 Paper ........................1-9 1.5.1 Paper handling ................... 1-9 1.5.2 Media specifications ...................
Page 22: Specifications List
Less than 19.0 seconds N/A (for Europe) (for Europe) ARM9 200 MHz Memory Standard 16 MB Option Interface USB Hi-Speed 2.0 (FAX-2840/2845 for Europe: N/A) Power Peak 1080 W consumption Copying Average: Approximately 420 W Average: Average: (for U.S.A., Asia and Oceania)
Page 23 Weights Without Carton, 9.0 kg / 19.8 lb With toner/drum FAX-2840/2940 for Europe: 8.8 kg / 19.4 lb LCD Size 1.85 x 0.43 inch (16 characters x 2 lines) For China: 1.89 x 0.39 inch (10 characters x 2 lines) Specifications are subject to change without notice.
Page 24 Model FAX-2950 FAX-2990 MFC-7240 MFC-7290 Print method Electrophotographic/Laser Resolution 600 x 600 dpi, HQ1200 (2400 x 600 dpi) quality Print speed One-sided Up to 24/24 Up to 24/24 Up to 20/21 Up to 24/24 * When loading A4 or Letter-size paper from the paper tray. Two-sided * When loading A4 or Letter-size paper from the paper tray.
Page 25 Model FAX-2950 FAX-2990 MFC-7240 MFC-7290 Dimensions Carton Size 458 x 476 x 436 mm (180 x 187 x 172 inch) (W x D x H) Machine Size 360 x 368 x 311 mm (145 x 142 x 122 inch) Weights Without Carton, 9.0 kg / 19.8 lb With toner/drum...
Page 26: Computer Requirements
Intel 2 GB 2 GB Processor *1 For WIA, 1200 x 1200 resolution. Brother Scanner Utility enables to enhance up to 19200 x 19200 dpi. *2 Third-party USB ports are not supported. *3 PC-Fax supports black and white only. ®...
Page 27: Network Connectivity
Network Connectivity Model All Models Wired Network node network type Network type Wireless Network node network type Network type Communication mode Network security Specifications are subject to change without notice. Service Information Part Approximate Life (pages) Machine life 50,000 pages (A4/Letter size) or 5 years MTBF 4,000 hours MTTR...
Page 28: Supplies
Supplies Model FAX-2840 FAX-2845 FAX-2890 FAX-2940 Toner Starter Approximately Approximately Approximately 1,200 pages cartridge Toner 700 pages 1,000 pages (for U.S.A. and China) (for U.S.A. and Approximately 1,000 pages Oceania) (for Europe) Approximately 1,000 pages (for Europe) Approximately 1,200 pages...
Page 29 Model FAX-2950 FAX-2990 MFC-7240 MFC-7290 Toner Starter Approximately 1,200 pages (for Asia and China) cartridge Toner Approximately 700 pages (for U.S.A. and Oceania) Standard Approximately 1,200 pages Toner High Yield Approximately 2,600 pages Toner Super High Yield Toner When printing A4/Letter size one sided pages in accordance with ISO/IEC 19752 Shelf life: 2 years without opening (6 months after opening) Drum unit Life expectancy: Approximately 12,000 pages (1 page / job)
Page 30: Paper
Paper 1.5.1 Paper handling Model All Models Paper Input Paper tray 1 250 sheets Manual feed 1 sheet slot 20 sheets 30 sheets (staggered) (for U.S.A. and Europe) Paper Output Face-down 100 sheets (80 g/m Face-up 1 sheet (straight paper path) Duplex Specifications are subject to change without notice.
Page 31: Printable & Scannable Area
4 mm (0.16 inch) 4 mm (0.16 inch) *1 For MFC-7240/7290/FAX-2950 Specifications are subject to change without notice. Telephone Model All Models Handset Yes (Except for Europe of FAX-2840 and 2940) Specifications are subject to change without notice. 1-10 Confidential...
Page 32: Fax
Model FAX-2840 FAX-2845 FAX-2890 FAX-2940 Modem Speed 33,600 bps (FAX) 14,400 bps 33,600 bps (FAX) (FAX) Transmission speed Approximately 2.5 seconds Approximately Approximately (ITU-T Test Chart #1, Std 7.0 seconds 2.5 seconds resolution, JBIG) (ITU-T Test (ITU-T Test Chart #1, Std...
Page 33: Copy
Copy Model FAX-2840 FAX-2845 FAX-2890 FAX-2940 Copy Speed (A4/Letter) Up to 20/21 ppm Up to 24/24 ppm (for U.S.A. and China) Up to 20/21 ppm (for Europe) First copy From Ready Less than 12 seconds Less than 11 seconds out time mode and (for U.S.A.
Page 34: Scanner
1.10 Scanner Model FAX-2940 FAX-2950 FAX-2990 MFC-7240 MFC-7290 Resolution Maximum scanning 600 (main scanning) x 600 (sub scanning) dpi Resolution (Interpolated) Maximum scanning 19200 (main scanning) x 19200 (sub scanning) dpi Scanning Monochrome A4: 2.63 seconds speed Letter: 2.47 seconds Color Specifications are subject to change without notice.
Page 35: Chapter 2 Troubleshooting
CHAPTER TROUBLESHOOTING Confidential...
Page 36 CHAPTER 2 TROUBLESHOOTING This chapter details error messages and codes which the incorporated self-diagnostic function of the machine will display if any error or malfunction occurs. If any error message appears, refer to this chapter to find which parts should be checked or replaced. The latter half of this chapter provides sample problems which could occur in the main sections of the machine and related troubleshooting procedures.
Page 37 3.7.1 Cannot print data..................2-76 3.8 Document Feeding Troubleshooting..............2-77 3.8.1 No feeding ....................2-77 3.8.2 Double feeding ..................2-77 3.8.3 Wrinkles....................2-77 3.9 Scanning Image Defect Troubleshooting............. 2-78 3.9.1 Image defect examples ................2-78 3.9.2 Troubleshooting according to scanning image defect ......2-78 3.10 Control Panel Troubleshooting ................
Page 38: Introduction
1. INTRODUCTION Troubleshooting is the countermeasure procedures that the service personnel should follow if an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible troubles which may occur in future and determine the troubleshooting procedures, so this chapter covers some sample troubles.
Page 39 WARNING DO NOT use any flammable spray or flammable solvent such as alcohol, benzine, or thinner in or around the machine. Otherwise a fire or electric shock may result. (5) Verify again that the repaired portion works properly. Confidential...
Page 40: Initial Check
Initial Check Check the following items before attempting to repair the machine. Operating environment (1) The machine is placed on a flat, stable surface. (2) The machine is used in a clean environment where the temperature is between 10°C (50°F) and 32.5°C (90.5°F) and the relative humidity is maintained between 20% and 80%.
Page 41 Others (1) Condensation When the ambient temperature of the machine varies from low to high during cold seasons or due to the effect of air conditioning, condensation may occur inside the machine, causing various problems as listed below. • Condensation on the surface of optical devices such as the laser scanner windows, lens, reflecting mirror, and protection glass may cause light print image.
Page 42: Overview
2. OVERVIEW Cross-section Drawing 2.1.1 Printer part <Front side> <Back side> Eject roller 2 Eject pinch roller Exposure drum Developer roller Supply roller Laser unit Registration rear actuator Back cover Manual feed slot cover Eject roller 1 Registration front actuator Registration roller Paper eject actuator Heat roller...
Page 43: Scanning Part
2.1.2 Scanning part Document tray ASSY Document detection actuator Document scanning position actuator Document ejection roller Separation pad ASSY ADF document output support flap CIS unit Document feed roller Document separate roller Fig. 2-2 Confidential...
Page 44: Paper Feeding
Paper Feeding 2.2.1 Printer part <Back side> <Front side> Manual feed Rear paper eject path slot path Paper tray path Fig. 2-3 Confidential...
Page 45: Scanning Part
2.2.2 Scanning part Fig. 2-4 Confidential...
Page 46: Printer Part
Operation of Each Part ■ Printer part Part name Operation Pick-up roller Feed the paper from the paper tray. Separation roller, separation pad Separate the paper fed from the paper tray into single sheets. Registration front actuator Detect the front edge of paper, and control the drive of registration roller.
Page 47: Block Diagram
Block Diagram Panel PCB ASSY Registration front/rear Document scanning sensor PCB ASSY position sensor Registration front sensor Document detection sensor Registration rear sensor Power supply switch Low voltage power CIS unit supply PCB ASSY Fuser unit Heater switch Halogen heater ADF motor Center thermistor Control panel cover sensor...
Page 48: Main Components
Main Components Control panel ASSY Document tray ASSY Control panel cover link Cord hook Cord hook Pressure bar Upper back cover Document chute ASSY Upper cover R Control panel Modem PCB ASSY cover link Handset holder Hook actuator Unfold support flap Eject pinch roller Side cover R R ASSY...
Page 49: Life Of Toner Cartridge And Drum Unit
Life of Toner Cartridge and Drum Unit <Life of Toner Cartridge> This machine detects the remaining toner only by the dot count and the number of rotations of the developer roller. The function to detect by the light sensor is not installed. As this machine is not equipped with a toner sensor as conventional models are, it manages the level of remaining toner by dot count during printing and the number of rotations of the developer roller.
Page 50 <Life of Drum Unit> The end of life of the drum unit is determined based on the "drum counter" or the "number of drum rotations", whichever is larger. Printing does not stop even when the drum unit reaches the end of life. The drum counter is based on the total printed pages on each drum unit.
Page 51: Error Indications
3. ERROR INDICATIONS This machine includes a self-diagnosis function. If the machine does not work normally it determines that an error has occurred, and indicates the corresponding error message on the LCD, which in turn helps the service personnel to quickly find out the problem. Error Codes The errors shaded in the table below do not occur in the normal operation.
Page 52 Error Refer Error Refer Problem Problem codes codes An unidentified error occurred. 2-28 An unidentified error occurred. 2-31 The number of rotations of the drum unit has reached the life 2-28 An unidentified error occurred. 2-31 limit. (Printing does not stop.) The number of rotations of the developer roller will reach the An unidentified error occurred.
Page 53 Error Refer Error Refer Problem Problem codes codes Detected discharge that may be attributable to dirty corona wire 2-37 An unidentified error occurred. 2-42 on the drum unit. An unidentified error occurred. 2-37 An unidentified error occurred. 2-42 The paper size set on the machine is 2-38 An unidentified error occurred.
Page 54 Error Refer Error Refer Problem Problem codes codes The document scanning position sensor does not detect the leading edge of the 2-47 An unidentified error occurred. 2-51 document although the document has been fed for the specified distance. The control panel cover sensor A black level not within the detected that the control panel 2-47...
Page 55 Error Refer Error Refer Problem Problem codes codes An unidentified error occurred. 2-54 An unidentified error occurred. 2-57 An unidentified error occurred. 2-54 Detected a main fan failure. 2-57 An unidentified error occurred. 2-54 An unidentified error occurred. 2-58 An unidentified error occurred. 2-54 An unidentified error occurred.
Page 56: Error Messages
Error Messages The error messages displayed on the LCD of the machine and their description are shown in the table below. Error Refer Error Message Description codes The device was removed during data Access Error processing. The new toner sensor could not detect the new Cartridge Error 2-52 toner cartridge correctly.
Page 57 Error Refer Error Message Description codes Refer to the error code for details. Machine Error ** (** indicates the error code.) The registration front sensor detected that there Manual Feed was no paper set in the manual feed slot when 2-43 feeding from the manual feed slot was set.
Page 58: Communication Error Codes
Communication Error Codes Refer Code 1 Code 2 Cause No document detected when calling. 2-82 Wrong number called. 2-82 No dial tone detected before start of dialing. 2-82 Busy tone detected before dialing. 2-82 2nd dial tone not detected. 2-82 No loop current detected.
Page 59 Refer Code 1 Code 2 Cause Polled by any other manufacturers' terminal while waiting 2-82 for secure polling. Common key not registered although it needs to be used. 2-82 Invalid resolution selected. 2-82 Password not correct. 2-82 Polling ID not correct. 2-82 DCN received.
Page 60 Refer Code 1 Code 2 Cause Modem error detected during receiving of video signals. 2-82 Equipment error. 2-82 (For XX, refer to "3.1 Error Codes" in this chapter.) Establishment of FAX communication: FAX communication is established when the calling station receives a DIS (reception capability) signal from the called station and the called station receives a NSS or DCS (communications test) signal from the calling station.
Page 61: Error Cause And Remedy
Error Cause and Remedy Check the User Check items first. If an error cannot be resolved, follow the procedures in numerical order in the Step field. Error code 0B, 0E and 0F These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software.
Page 62 Error code 1A to 1D These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 63 Error code 24 Print Unable 24 Turn the power off and then back on again. An error occurred in the internal temperature thermistor. Step Cause Remedy Connection failure of the Reconnect the internal temperature thermistor internal temperature thermistor harness. harness Internal temperature thermistor Replace the internal temperature thermistor.
Page 64 Error code 37 to 3A These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 65 Error code 44 No Toner Open the Front Cover, then install the Toner Cartridge. The new toner sensor detected that the toner cartridge was not set. <User Check> • Install the toner cartridge. Step Cause Remedy Connection failure of the new Reconnect the new toner sensor harness.
Page 66 Error code 51 to 55 These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 67 Error code 58 Print Unable 58 Turn the power off and then back on again. Any of errors 6A to 6D, 6F, 76 or 78 occurred when the power was turned ON or the machine goes back to the ready state from sleep mode. <User Check>...
Page 68 Error code 5A to 62 These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 69 Error code 67 Toner Low Prepare New Toner Cartridge. The number of rotations of the developer roller will reach the upper limit when Stop Mode is set for the toner cartridge. <User Check> • Prepare a new toner cartridge. Step Cause Remedy Main PCB failure...
Page 70 Error code 6A Print Unable 6A Turn the power off and then back on again. The center thermistor of the fuser unit does not reach the specified temperature within the specified time. Error code 6B Print Unable 6B Turn the power off and then back on again. The center thermistor of the fuser unit does not reach the specified temperature within the specified time.
Page 71 Error code 6F Print Unable 6F Turn the power off and then back on again. The center thermistor or the side thermistor of the fuser unit detected a temperature error. Step Cause Remedy Connection failure of the fuser Reconnect the fuser unit harness. unit harness Fuser unit failure Replace the fuser unit.
Page 72 Error code 71 Print Unable 71 Turn the power off and then back on again. Detected an error in the synchronized signal of the polygon motor for the laser unit. Error code 72 Print Unable 72 Turn the power off and then back on again. Cannot detect the signal from the beam sensor for the laser unit.
Page 73 Error code 75 Cooling Down Wait for a while The internal temperature thermistor detected a temperature higher than the specified value. <User Check> • Leave the machine for a while as the power remains ON. Step Cause Remedy Internal temperature thermistor Replace the internal temperature thermistor.
Page 74 Error code 7B and 7C These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 75 Error code 7F Size mismatch Fax received. Set correct paper size in menu. The paper size set on the machine is smaller than the specified fax size. <User Check> • Reset the paper size setting in menu. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.
Page 76 Error code 83 Drum Stop Replace the Drum Unit. Refer to the instructions in the carton of the new drum. Detected discharge when the number of rotations of the drum has exceeded twice the life limit. <User Check> • Replace the drum unit with a new one and reset the drum counter. (Refer to "2.2 Parts Life Reset Function (Drum)"...
Page 77 Error code 85 to 87 These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 78 Error code 8A Jam Tray Remove the jammed paper from Tray, then press Start. The registration front sensor does not detect paper pass within the specified time. <User Check> • Check that the paper is not jammed at the paper tray and the front cover. •...
Page 79 Error code 8D Cover is Open Make sure there is no paper jammed inside the machine and close the Back Cover, then press Start. When the power switch was turned ON, the eject sensor detected paper pass or detected that the fuser unit cover was open. <User Check>...
Page 80 Error code 9A Manual Feed Load Paper. The registration front sensor detected that there was no paper set in the manual feed slot when feeding from the manual feed slot was set. <User Check> • Load the paper into the manual feed slot. Step Cause Remedy...
Page 81 Error code 9C Replace Toner Received faxes are also stored in memory until the toner cartridge is replaced or the memory is full. The number of rotations of the developer roller will reach the upper limit soon when Continue Mode is set for the toner cartridge. <User Check>...
Page 82 Error code 9F The registration front sensor detected that the paper has run out when faxing or printing a list or report. <User Check> • Set the paper in the paper tray. Step Cause Remedy Registration front actuator Correct the position of the registration front catching on some position actuator.
Page 83 Error code A1 Cover is Open Close the Front Cover. The front cover sensor detected that the front cover was open. <User Check> • Check that the front cover is closed correctly. Step Cause Remedy Connection failure of the high Reconnect the high voltage power supply PCB voltage power supply PCB ASSY harness.
Page 84 Error code A3 Document Jam Clear the scanner jam, then press the Stop Key. The document scanning position sensor does not detect the leading edge of the document although the document has been fed for the specified distance. <User Check> •...
Page 85 Error code A5 Scan Unable Remove the original document. Turn the power off, then on again. When scanning the fax, white or black compensation data for the CIS was not within the correct range. Error code A6 Scan Unable A6 See Troubleshooting and routine maintenance chapter in User's Guide.
Page 86 Error code A9 to AC These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 87 Error code B1 Scanner Error Dark level offset data adjustment error for scanning. * This error is indicated on the LCD in the maintenance mode. Error code B2 Scanner Error Gain control data adjustment error for scanning. * This error is indicated on the LCD in the maintenance mode. Step Cause Remedy...
Page 88 Error code BA This error does not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> • Turn OFF the power switch, and turn it ON again after a while. Step Cause Remedy...
Page 89 Error code BE and BF These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 90 Error code C7 Out of Memory Press Stop key There is insufficient memory to expand PC-print data. Error code C8 An unidentified error occurred. <User Check> • Turn OFF the power switch, and turn it ON again after a while. Step Cause Remedy...
Page 91 Error code D2 to DC These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 92 Error code DE Print Unable DE Turn the power off and then back on again. When the center thermistor of the fuser unit is higher than the idle temperature, the side thermistor detected a temperature lower than the specified temperature. <User Check>...
Page 93 Error code E1 Print Unable E1 Turn the power off and then back on again. Software bug <User Check> • Turn OFF the power switch, and turn it ON again after a while. Step Cause Remedy Main PCB failure Replace the main PCB ASSY. Error code E2 Print Unable E2 Turn the power off and then back on again.
Page 94 Error code E6 Print Unable E6 Turn the power off and then back on again. Write error in the EEPROM of the main PCB <User Check> • Turn OFF the power switch, and turn it ON again after a while. Step Cause Remedy...
Page 95 Error code ED and EE These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 96 Error code F1 to F8 These errors do not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. <User Check> •...
Page 97: Paper Feeding Troubleshooting
Paper Feeding Troubleshooting Problems related to paper feeding are end user recoverable if following the User Check items. If the same problem occurs, follow each procedure in the order of the number described in the Step column in the tables below. 3.5.1 Pickup function of paper tray does not work Step Cause...
Page 98: Double Feeding
3.5.3 Double feeding <User Check> - Check that the paper is loaded into the paper tray correctly. - Check that the thickness of the paper is 60 to 105 g/m - Clean the separation pad. - Check that too much paper is not loaded in each tray. - Check that the backside of used paper or damp (wet) paper is not used.
Page 99: Wrinkles Or Creases
3.5.6 Wrinkles or creases <User Check> - Check that the paper is not damp. - Check that the paper is loaded into the paper tray correctly. - Check that the thickness of the paper is 60 to 105 g/m - Turn over the stack of paper in the paper tray, or try rotating the paper 180 degrees in the paper tray.
Page 100: Curl In The Paper
3.5.7 Curl in the paper <User Check> - Choose Reduce Paper Curl mode in the driver. - Turn the anti-curl levers in the direction of the black arrow. (Refer to Fig. 2-8.) Step Cause Remedy Fuser unit failure Replace the fuser unit. Anti-curl lever Anti-curl lever Fig.
Page 101: Image Defect Troubleshooting
Image Defect Troubleshooting 3.6.1 Image defect examples Light (2-65) Faulty registration (2-67) Dark (2-67) Poor fixing (2-68) Completely blank (2-68) Image distortion All black (2-69) Dirt on the back of paper (2-69) Vertical streaks (2-70) (2-69) Black vertical Black horizontal White vertical White horizontal Faint print (2-72)
Page 102: Troubleshooting According To Image Defect
3.6.2 Troubleshooting according to image defect Image defect related problems are user recoverable if following the User Check items. If the same problem occurs, follow each procedure in the order of the number described in the Step column in the tables below. Light <User Check>...
Page 103 Electrodes location of the toner cartridge and drum unit Side view of drum unit Fig. 2-10 Electrodes location of the machine Fig. 2-11 <How to clean the electrodes> Turn OFF the power switch. Unplug the power cord from the AC power outlet, and leave the machine for a few minutes.
Page 104 Faulty registration <User Check> - Check that the appropriate media type is selected in the driver. Step Cause Remedy Adjusted value of the laser unit is Refer to "2.1 Entering the Adjusted Value of incorrect. the Laser Unit" in Chapter 4, and enter the adjusted value of the laser unit again.
Page 105: Poor Fixing
Poor fixing <User Check> - Check the machine's environment. High temperature and high humidity or low temperature and low humidity conditions can cause this problem. - Clean the corona wire of drum unit. - Replace the drum unit with a new one. - Replace the toner cartridge with a new one.
Page 106: Image Distortion
Image distortion Step Cause Remedy Laser unit attachment failure Attach the laser unit correctly and secure the screw. Laser unit failure Replace the laser unit. Main PCB failure Replace the main PCB ASSY. All black <User Check> - Clean the corona wire of the drum unit. - Replace the drum unit with a new one.
Page 107: Vertical Streaks
Vertical streaks <User Check> - This problem may occur with noise which is caused by dirt on the corona wire in the drum unit. In this case, clean the corona wire. - If the same problem occurs after printing a few pages, the adhesive of the label or the like, paper powder or dirt may be attached on the surface of the exposure drum.
Page 108 Black horizontal stripes <User Check> - Clean inside the machine and the corona wire of the drum unit. - When the horizontal stripes appear at intervals of 94.2 mm, replace the drum unit with a new one. - The paper tray earth spring on the machine side may be dirty. Clean it with a dry cloth.
Page 109: Faint Print
White vertical streaks <User Check> - Check that there is no dust in the clearance between the toner cartridge and the drum unit. - Replace the toner cartridge with a new one. - Check the machine's environment. High temperature and high humidity or low temperature and low humidity conditions can cause this problem.
Page 110: White Spots
White spots <User Check> - When the white spots appear at intervals of 32.5 mm, replace the toner cartridge with a new one. - If the same problem occurs after printing a few pages, the adhesive of the label or the like, paper powder or dirt may be attached on the surface of the exposure drum.
Page 111: Horizontal Lines
Black band <User Check> - Clean inside the machine and the corona wire of the drum unit. If the same problem occurs after cleaning, replace the drum unit with a new one. - The paper tray earth spring on the machine side may be dirty. Clean it with a dry cloth.
Page 112 Ghost <User Check> - Check the machine's environment. High temperature and high humidity or low temperature and low humidity conditions can cause this problem. - Choose Reduce Ghosting mode in the driver. - Replace the drum unit with a new one. Step Cause Remedy...
Page 113: Software Setting Troubleshooting
(3) Select the "USB" at the bottom of "Hardware" in left side "Content". (4) Select the "MFC-XXXX" or "FAX-XXXX" in the "USB Device Tree". (5) Check the "Product ID" under "MFC-XXXX" or "FAX-XXXX". Product ID (hexadecimal) • FAX-2840 : 02A3h • FAX-2950 : 02A7h •...
Page 114: Document Feeding Troubleshooting
Document Feeding Troubleshooting 3.8.1 No feeding <User Check> - Set the document so that it contacts the rear of the tray, and check that LCD display varies. - Check that the number of the documents complies with the specifications in the specification list.
Page 115: Scanning Image Defect Troubleshooting
Scanning Image Defect Troubleshooting 3.9.1 Image defect examples Light (2-78) Faulty registration (2-79) Dark or bluish white (2-79) Completely blank Vertical streaks (2-80) White vertical (2-80) streak (2-80) Fig. 2-13 3.9.2 Troubleshooting according to scanning image defect Light <User Check> - Check that the setting of the contrast does not become light.
Page 116 Faulty registration Step Cause Remedy Scan start position misalignment Perform the fine adjustment of scan start position. (Function code Document scanning position Correct the position of the document actuator catching on some position scanning position actuator. Dark or bluish white <User Check>...
Page 117 Completely blank <User Check> - Check that the document is not reversed. Step Cause Remedy CIS unit failure Replace the CIS unit. Main PCB failure Replace the main PCB ASSY. Vertical streaks <User Check> - Check that the CIS glass is not stained. Step Cause Remedy...
Page 118: Control Panel Troubleshooting
3.10 Control Panel Troubleshooting 3.10.1 Nothing is displayed on the LCD <User Check> - Check that the power switch is turned ON. Step Cause Remedy AC cord failure Replace the AC cord. Connection failure of the panel PCB Reconnect the panel PCB harness. harness Connection failure of the LCD Reconnect the LCD harness.
Page 119: Troubleshooting Of Fax/Telephone Problems
3.11 Troubleshooting of FAX/Telephone Problems 3.11.1 FAX cannot be sent <User Check> - Check that the telephone cord is securely inserted into the socket. Step Cause Remedy Connection failure of the modem Reconnect the modem PCB flat cable. PCB flat cable Connection failure of the panel PCB Reconnect the panel PCB harness.
Page 120: Cannot Talk On The Handset
3.11.5 Cannot talk on the handset <User Check> - Check that the handset curled cord is securely inserted into the socket. - Adjust the handset volume. Step Cause Remedy Curled cord failure Replace the curled cord ASSY. Handset failure Replace the handset. Hook switch PCB failure Replace the hook switch PCB ASSY.
Page 121: Other Troubleshooting
3.12 Other Troubleshooting 3.12.1 The machine is not turned ON or the LCD indication does not appear Step Cause Remedy AC cord failure Replace the AC cord. Connection failure of the panel PCB Reconnect the panel PCB harness. harness Connection failure of the LCD Reconnect the LCD harness.
Page 122 CHAPTER DISASSEMBLY/REASSEMBLY Confidential...
Page 123 CHAPTER 3 DISASSEMBLY/REASSEMBLY This chapter describes procedures for disassembling and reassembling the machine with related notes. The provided disassembly order flow enables you to take in the disassembly procedure of related part at a glance. At the start of disassembling, you can check the disassembly order flow which guides you through a shortcut to get to the part.
Page 124 9.21 ADF motor......................... 3-47 9.22 CIS unit ........................3-48 9.23 Control panel cover sensor ..................3-49 9.24 Modem PCB ASSY ....................3-50 9.25 Inner chute cover ...................... 3-51 9.26 Inner chute ASSY ..................... 3-52 9.27 Fuser unit ........................3-53 9.28 Low voltage power supply PCB ASSY..............3-56 9.29 Main fan ........................
Page 125: Safety Precautions
1. SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, follow the warnings and precautions below during maintenance work. WARNING Some parts inside the machine are extremely hot immediately after the machine is used. When opening the front cover ASSY or back cover to access any parts inside the machine, never touch the shaded parts shown in the following figures.
Page 126: Packing
Quick setup guide Curled cord ASSY ADF document output support flap USB cable Telephone User’s guide line cord ASSY AC cord Option carton Handset weight ASSY Telephone plug Pad ASSY Protective material Pad ASSY Paper strip Machine Pad ASSY Carton brother Confidential...
Page 127: Screw Catalogue
3. SCREW CATALOGUE Screw pan (S/P washer) Taptite bind B Taptite bind B Screw pan (S/P washer) M3x10 M3x6 Taptite bind B Screw pan (S/P washer) M4x12 M3x12 DB Taptite cup B Screw pan (S/P washer) M3.5x6 Taptite cup B Screw pan (S/P washer) M3x10 M3.5x8...
Page 128: Screw Torque List
4. SCREW TORQUE LIST Note: • For verifying the shape of each screw, refer to "3.SCREW CATALOGUE" in this chapter. Tightening torque Location of screw Screw type Q'ty m (kgf • • Paper tray cover Taptite bind B M4x12 0.8±0.1 (8±1) Document tray ASSY Taptite cup B M4x12 0.8±0.1 (8±1)
Page 129 Tightening torque Location of screw Screw type Q'ty m (kgf • • Laser unit Taptite cup S M3x8 SR 0.8±0.05 (8±0.5) Main PCB ASSY Taptite cup S M3x6 SR 0.6±0.1 (6±1) Front chute ASSY Taptite bind B M4x12 0.8±0.1 (8±1) Under bar Taptite bind B M4x12 0.8±0.1 (8±1)
Page 130: Lubrication
5. LUBRICATION There are no applicable parts for lubrication. Confidential...
Page 131: Overview Of Gears
6. OVERVIEW OF GEARS Paper feeder part <Layout view> Fig. 3-1 <Development view> Fig. 3-2 <Name of gears> LY2584 Feeder gear 17 LY2046 Feeder gear idle 65 LY2047 Feeder gear LY2045 Feeder gear 21/30/17 LY2581 Feeder gear holder LY2044 Feeder gear 41 LY2582 Feeder gear spring LY2043...
Page 132 Development part <Layout view> Fig. 3-3 <Development view> Fig. 3-4 <Name of gears> LY2064 Develop joint link 12 LY2063 DEV gear 33 10 LY2458 Develop joint lift cam 13 LY2062 DEV gear 21/45R 11 LU2041 Develop joint lift disk * These parts are subject to change without notice. Confidential...
Page 133 Paper eject part <Layout view> Fig. 3-5 <Development view> Fig. 3-6 <Name of gears> 14 LY2011 Ejector gear 10/15 17 LY2010 Fuser gear 28/34 15 LY2012 Ejector gear 22 18 LY2066 Fuser gear 20/54R pendulum 16 LY2013 Ejector gear 40 19 LY2014 Ejector gear 29 * These parts are subject to change without notice.
Page 134: Harness Routing
7. HARNESS ROUTING Registration front/rear sensor PCB ASSY Guide Machine top side Low voltage power supply PCB ASSY Registration front/rear sensor harness Registration front/rear sensor PCB ASSY 3-10 Confidential...
Page 135 Internal temperature thermistor Internal temperature thermistor Main PCB ASSY Guides Internal temperature thermistor Guide Guide Back side view 3-11 Confidential...
Page 136 New toner sensor PCB ASSY Guide New toner sensor PCB ASSY Main PCB ASSY 3-12 Confidential...
Page 137 T1 clutch ASSY, Registration clutch ASSY Main PCB ASSY Guides Guides Registration clutch ASSY Guides T1 clutch ASSY 3-13 Confidential...
Page 138 Eject sensor PCB ASSY Back cover sensor Eject sensor PCB ASSY Guide Back cover Hooks sensor harness Main PCB ASSY Main frame L ASSY Main PCB shield calking ASSY Main PCB sheet Main-eject sensor flat cable harness 3-14 Confidential...
Page 139 Main motor Main PCB ASSY Main motor Laser unit Laser unit Main PCB ASSY Hole of guide Guide Main-scanner flat cable harness 3-15 Confidential...
Page 140 Main fan Hole of guide Hole of guide Tape High voltage power supply PCB ASSY Guide Main fan 3-16 Confidential...
Page 141 Low voltage power supply PCB ASSY Low voltage power supply harness ASSY Low voltage power supply PCB ASSY <Right side> Main PCB ASSY Guide <Left side> 3-17 Confidential...
Page 142 High voltage power supply PCB ASSY Guide Guide Main-HVPS flat cable harness Guide Guide Main PCB ASSY High voltage power supply PCB ASSY Fuser unit Heater harness Guides Fuser unit Guides Main frame L ASSY Side thermistor harness ASSY Center thermistor Main frame R ASSY harness ASSY 3-18...
Page 143 Speaker unit Speaker unit Guide Guide Guides Guides Speaker harness Main PCB ASSY 3-19 Confidential...
Page 144 Modem unit Modem PCB ASSY Modem PCB flat cable Guides Core Modem earth harness L Main PCB ASSY Modem earth harness R Guide Modem unit Modem earth harness R Guide 3-20 Confidential...
Page 145 Panel unit/ADF motor Control panel ASSY Panel PCB ASSY Core Panel PCB harness Guide ADF motor ADF motor harness ADF earth harness Guide Panel PCB harness Main PCB ASSY 3-21 Confidential...
Page 146 CIS unit CIS unit CIS flat cable Core Main PCB ASSY Hook switch PCB ASSY/Control panel cover sensor Handset holder Hook switch PCB ASSY Control panel cover sensor harness Guides Hook switch PCB harness Guide Control panel cover sensor Guide Main PCB ASSY 3-22 Confidential...
Page 147: Disassembly Flow Chart
8. DISASSEMBLY FLOW CHART Disassembly / Re-Assembly (second) 9.14 Unfold support 9.8 Document tray 9.34 Pick-up roller 9.2 Paper tray 9.3 Cord hook 9.10 Side cover R flap ASSY ASSY 20/15 10/10 5/10 9.28 LVPS shield plate 9.35 Rubber foot 9.9 Side cover L cover 20/10...
Page 148: Disassembly Procedure
9. DISASSEMBLY PROCEDURE Preparation Transferring Received Fax Data When the machine at the user site requires to be repaired, unplugging the power cord from the electrical outlet for sending the machine for repair may lose received fax data if left in the machine.
Page 149 Disconnecting Cables and Removing Accessories Prior to proceeding with the disassembly procedure, (1) Disconnect the following: • AC cord • USB cable (if connected) • LAN cable (if connected) • Curled cord ASSY (if connected) (2) Remove the following: • Paper tray •...
Page 150: Paper Tray
Paper tray (1) Remove the two taptite bind B M4x12 screws and the four bosses, and then remove the paper tray cover from the paper tray. Taptite bind B M4x12 Paper tray cover Bosses Back side view Back side view Bosses Paper tray Fig.
Page 151 (2) Release the two hooks of the separation pad ASSY. (3) Press both side arms of the separation pad ASSY to remove the pins, and remove the separation pad ASSY. (4) Remove the separation pad spring from separation pad ASSY. Note : •...
Page 152 (5) Push the hook of the lift gear 46 while pushing up the plate up plate, and remove the lift gear 46. Plate up plate Hook Lift gear 46 Paper tray Fig. 3-10 (6) Remove the gear Z23M10Z14M75 and the gear Z19M10. Gear Z19M10 Paper tray Gear Z23M10Z14M75...
Page 153: Cord Hook
Cord hook (1) Turn the two cord hooks, and then remove them from the machine. Cord hooks Fig. 3-12 3-29 Confidential...
Page 154: Back Cover
Back cover (1) Open the back cover. (2) Push the both side ribs of the back cover outward, and release the two bosses of the outer chute ASSY. (3) Pull the back cover in the direction of arrow 3a, and remove it from the pin, and then slide it in the direction of arrow 3b to remove it from the machine.
Page 155: Outer Chute Assy
Outer chute ASSY (1) Pull the outer chute ASSY in the direction of arrow 1a, and release the boss A. Slide the outer chute ASSY in the direction of arrow 1b, and release the boss B, and then remove the outer chute ASSY from the machine. Boss A Outer chute ASSY Boss B...
Page 156: Fuser Unit Cover
Fuser unit cover (1) Hold the both knobs on the fuser unit cover, and pull down the fuser unit cover to your side. (2) Pull the fuser unit cover in the direction of the arrow to remove it from the two bosses, and then remove it from the machine.
Page 157: Front Cover Assy
Front cover ASSY (1) Open the front cover ASSY. (2) Release the hook of the develop joint link to remove the develop joint link from the front cover ASSY. (3) Pull up the rib on the front chute ASSY, and slide the front cover ASSY in the direction of arrow 3, and then remove it from the machine.
Page 158: Document Tray Assy
Document tray ASSY (1) Remove the two taptite cup B M4x12 screws. And release the two hooks of the document tray ASSY, and remove the document tray ASSY from the machine. Hooks Document tray ASSY Taptite cup B M4x12 Fig. 3-17 3-34 Confidential...
Page 159: Side Cover L
Side cover L (1) Remove the taptite bind B M4x12 screw. And release the 17 hooks to remove the side cover L from the machine. Hooks Hooks Taptite bind B M4x12 Hooks Hooks Hooks Hooks Side cover L Fig. 3-18 9.10 Side cover R (1) Remove the taptite bind B M4x12 screw.
Page 160: Upper
9.11 Upper back cover (1) Float section A, and remove the boss. And slide the upper back cover in the direction of the arrow to release the three hooks, and then remove the upper back cover from the machine. Hooks Upper back cover Boss Section A...
Page 161: Handset Holder (Upper Cover L For No Handset Model) / Upper Cover R
9.12 Handset holder (Upper cover L for no Handset model) / Upper cover R (1) Open the control panel ASSY. (2) Disconnect the hook switch PCB harness and the control panel cover sensor harness from the main PCB ASSY, and release them from the guide. (3) Release the wiring of the control panel cover sensor harness from the guides of the handset holder.
Page 162: Hook Switch Pcb Assy / Hook Actuator
9.13 Hook switch PCB ASSY / Hook actuator (1) Release the hook switch PCB harness from the securing fixtures. (2) Release the hook, and remove the hook switch PCB ASSY from the handset holder. (3) Remove the hook actuator from the hook switch PCB ASSY. Hook actuator Hook switch PCB ASSY Hook switch PCB harness...
Page 163: Document Chute Assy
9.16 Document chute ASSY (1) Release the wiring of the control panel cover sensor harness from the guide of the machine. (2) Remove the taptite cup S M3x6 SR screw, and remove the ADF earth harness and the modem earth harness L. (3) Disconnect the CIS flat cable, the ADF motor harness and the panel PCB harness from the main PCB ASSY.
Page 164 (5) Release the panel PCB harness from the securing fixtures. (6) Open the control panel ASSY at an angle of 45 degrees, and remove it from the document chute ASSY in the direction of the arrow. Control panel ASSY Panel PCB harness An angle of 45°...
Page 165: Document Chute Upper Assy
9.17 Document chute upper ASSY (1) Remove the three taptite cup B M3x10 screws. And release the two hooks to remove the document chute upper ASSY from the control panel ASSY. Taptite cup B M3x10 Taptite cup B M3x10 Document chute upper ASSY Hook Control panel ASSY Hook...
Page 166: Separation Pad Assy
9.18 Separation pad ASSY (1) Remove the taptite cup B M3x8 screw, and remove the front plate spring ASSY and the separation pad ASSY. (2) Push the both side arms of the separation pad holder inside to release the two bosses, and remove the separation pad holder from the document chute upper ASSY.
Page 167: Control Panel Assy
9.19 Control panel ASSY (1) Remove the panel PCB harness from the guide of the panel sub cover. (2) Release the two hooks, and float the panel PCB ASSY. (3) Release the two hooks, and slide the LED PCB ASSY in the direction of the arrow. (4) Release the lock, and disconnect the LCD flat cable from the LED PCB ASSY.
Page 168 (6) Remove the rubber key R and the rubber key L from the control panel cover. (7) Release the two hooks, and slide the LCD holder in the direction of the arrow to remove it from the control panel cover. (8) Release the two hooks, and remove the LCD from the LCD holder.
Page 169: Document Separate Roller
9.20 Document separate roller (1) Turn the bushing in the direction of arrow 1a to unlock, and pull it out in the direction of arrow 1b to remove the document feed roller from the document chute ASSY. Document chute ASSY Document feed roller Bushing Fig.
Page 170 (2) Remove the three taptite cup B M3x10 screws, and remove the document lower cover from the document chute ASSY. (3) While pushing down the hook, hold up the center of the document separate roller gear shaft, and slide it in the direction of the arrow to release the lock part from the rib. Then remove the document separate roller gear shaft from the document chute ASSY.
Page 171: Adf Motor
9.21 ADF motor (1) Turn the bushing in the direction of arrow 1a to unlock, and pull out in the direction of arrow 1b. Then remove the document eject roller from the document chute ASSY. Document chute ASSY Document eject roller Bushing Fig.
Page 172: Cis Unit
9.22 CIS unit (1) Release the two hooks of the CIS glass stopper, and slide the CIS glass stopper to remove it from the document chute ASSY. (2) Remove the CIS glass from the document chute ASSY. (3) Hold up the CIS unit to disconnect the CIS flat cable. (4) Remove the two CIS spacers from the CIS unit.
Page 173: Control Panel Cover Sensor
9.23 Control panel cover sensor (1) Release the two hooks, and remove the control panel cover sensor from the document chute ASSY. Document chute ASSY Hook Control panel cover sensor Hook Fig. 3-35 3-49 Confidential...
Page 174: Modem Pcb Assy
9.24 Modem PCB ASSY (1) Remove the two screw pan (S/P washer) M3.5x6 screws. And release the modem earth harness R from the securing fixtures to remove it from the machine. (2) Remove the screw pan (S/P washer) M3.5x6 screw. And release the modem earth harness L from the securing fixtures to remove it from the machine.
Page 175: Inner Chute Cover
9.25 Inner chute cover (1) Disconnect the speaker harness from the main PCB ASSY. (2) Remove the two taptite bind B M4x12 screws. And release the six hooks, and hold up the front side of the inner chute cover, and then slide it in the direction of the arrow to remove.
Page 176: Inner Chute Assy
9.26 Inner chute ASSY (1) Pull down both side green envelope levers of the fuser unit. (2) Remove the two taptite bind B M4x12 screws, and remove the inner chute ASSY from the machine. Fuser unit Green envelope lever R Inner chute ASSY Fuser unit Taptite bind B M4x12...
Page 177: Fuser Unit
9.27 Fuser unit (1) Release the harness of the fuser unit from the guide of the main frame R ASSY. (2) While pushing the hook of the connector of the fuser unit, disconnect the connector on the low voltage power supply PCB ASSY. Guides Connector (Low voltage power supply PCB ASSY)
Page 178 (4) Disconnect the connectors of the center thermistor harness ASSY and side thermistor harness ASSY from the eject sensor PCB ASSY. (5) Release the harnesses of the center thermistor harness ASSY and side thermistor harness ASSY from the guides of the main frame L ASSY. Guide Side thermistor harness ASSY...
Page 179 (6) Remove the two taptite pan B M4x14 screws to remove the fuser unit. Note : • Do not apply a physical impact or vibration on the fuser unit. • Do not touch the roller to prevent breakage of the fuser unit. Fuser unit Roller Taptite pan B M4x14...
Page 180: Low Voltage Power Supply Pcb Assy
9.28 Low voltage power supply PCB ASSY (1) Remove the earth spring front chute from the LVPS shield plate cover and the front chute ASSY. (2) Remove the hook part of the earth harness under R from the LVPS shield plate cover. (3) Remove the three taptite bind B M4x12 screws, the screw pan (S/P washer) M3.5x6 screw and the screw pan (S/P washer) M3x12 DB screw to remove the LVPS shield plate cover.
Page 181 (4) Remove the screw pan (S/P washer) M3.5x6 screw to remove the earth harness from the low voltage power supply PCB ASSY. (5) Remove the taptite flat B M3x10 screw to remove the inlet of the low voltage power supply PCB ASSY. (6) Release the two hooks, and remove the power supply switch of the low voltage power supply PCB ASSY.
Page 182 (9) Remove the low voltage power supply PCB ASSY, and disconnect the three connectors from the rear side. (10) Remove the LVPS insulation sheet. Connectors Low voltage power supply PCB ASSY LVPS insulation sheet Fig. 3-47 Harness routing : Refer to "1.
Page 183: Main Fan
9.29 Main fan (1) Disconnect the connector of the main fan from the high voltage power supply PCB ASSY. (2) Release the harness of the main fan from the guides of the main frame R ASSY. (3) Release the two hooks, and remove the main fan. Connector Guides Tape...
Page 184: High Voltage Power Supply Pcb Assy
9.30 High voltage power supply PCB ASSY (1) Release the flat cable from the guides of the main frame R ASSY, and disconnect it from the high voltage power supply PCB ASSY. (2) Remove the taptite bind B M4x12 screw. (3) Release the three hooks to remove the high voltage power supply PCB ASSY.
Page 185: New Toner Sensor Pcb Assy
9.31 New toner sensor PCB ASSY (1) Rotate the machine 180 degrees to the side of main frame L ASSY. (2) Disconnect the new toner sensor harness from the main PCB ASSY, and release it from the guide of the main frame L ASSY. (3) Remove the taptite bind B M3x10 screw.
Page 186: Filter
9.32 Filter (1) Release the two hooks to remove the air duct. (2) Pull the rib of the air duct in the direction of arrow 2, and remove the filter. Hooks Air duct Air duct Filter (Machine) Pin (Machine) Air duct Fig.
Page 187: Laser Unit
9.33 Laser unit (1) Disconnect the flat cable of the high voltage power supply PCB ASSY from the main PCB ASSY, and remove it from the guide on the main frame L ASSY. (2) Disconnect the flat cable of the laser unit from the laser unit. (3) Remove the flat cable of the laser unit from the guide of the main frame L ASSY, and disconnect the flat cable of the laser unit from the main PCB ASSY.
Page 188 Note : • Be careful not to touch the lens of the laser unit. Laser unit Lens Fig. 3-53 Note : • Attach the laser serial label as shown in the figure below (on laser plate) after replacing the laser unit. Laser serial label Laser unit Laser plate...
Page 189: Pick-Up Roller Assy
9.34 Pick-up roller ASSY (1) Turn the machine upside down, and put it as shown in the figure below. (2) Push the link arm in the direction of arrow 2, and turn the pick-up roller ASSY to release the boss. (3) Slide the pick-up roller ASSY in the direction of arrow 3 to release it from the shaft, and remove the pick-up roller ASSY from the machine.
Page 190: Rubber Foot
9.35 Rubber foot (1) Remove the two rubber foots from the machine. Rubber foot Rubber foot Machine Fig. 3-56 3-66 Confidential...
Page 191: Main Pcb Assy
9.36 Main PCB ASSY (1) Turn the machine upside down, and put it as shown in the figure below. (2) Disconnect the two flat cables and the five connectors. (3) Remove the three taptite cup S M3x6 SR screws. (4) Release the hook to remove the main PCB ASSY and the main PCB sheet. Hook Main PCB sheet Taptite cup S...
Page 192: T1 Clutch Assy, Registration Clutch Assy
9.37 T1 clutch ASSY, Registration clutch ASSY (1) Release the harness of the T1 clutch ASSY and the registration clutch ASSY from the guides of the main frame L ASSY. (2) Release the hook to remove the T1 clutch ASSY. (3) Release the hook to remove the registration clutch ASSY.
Page 193 (4) Remove the registration earth spring from the motor drive sub ASSY and the conductive bearing 5. (5) Remove the conductive bearing 5 from the pin of the main frame L ASSY, and turn it to the direction of arrow 5 until the releasing position, and then pull out the conductive bearing 5 from the registration roller shaft 2.
Page 194: Main Frame L Assy
9.38 Main frame L ASSY (1) Remove the two taptite bind B M4x12 screws to remove the front chute ASSY. Front chute ASSY Taptite bind B M4x12 Fig. 3-60 3-70 Confidential...
Page 195 (2) Place the machine so that the main frame L ASSY is at the top. (3) Release the low voltage power supply harness ASSY from the guide of the main frame L ASSY. (4) Remove the taptite bind B M4x12 screw 4a (for Under bar). (5) Remove the taptite cup S M3x6 SR screw 5a (for Chute earth plate), the taptite bind B M4x12 screw 5b (for PF frame ASSY) and the taptite cup S M3x6 SR screw 5c (for Earth plate laser L).
Page 196: Develop Drive Sub Assy, Develop Gear Joint/52
9.39 Develop drive sub ASSY, Develop gear joint/52 (1) Remove the taptite cup S M3x6 SR screw and the three taptite bind B M4x12 screws to remove the develop drive earth harness and the develop drive sub ASSY. Taptite bind B M4x12 Develop drive earth harness Develop drive sub ASSY Taptite cup S M3x6 SR...
Page 197 (2) Place the develop drive sub ASSY as shown in the figure below. (3) Release the two hooks of the develop joint with being careful not to damage them, and then remove the develop joint spring and the develop gear joint/52. Hooks Develop joint Develop joint spring...
Page 198: Motor Drive Sub Assy, Main Motor
9.40 Motor drive sub ASSY, Main motor (1) Remove the six taptite bind B M4x12 screws to remove the stopper and the motor drive sub ASSY. Taptite bind B M4x12 Taptite bind B M4x12 Stopper Motor drive sub ASSY Fig. 3-64 Harness routing : Refer to "6.
Page 199 (2) Place the motor drive sub ASSY as shown in the figure below. (3) Remove the drum gear 26L/131L. (4) Remove the three screw bind M3x4 screws to remove the main motor. Drum gear 26L/131L Screw bind M3x4 Motor drive sub ASSY Screw bind M3x4 Main motor Fig.
Page 200: Internal Temperature Thermistor
9.41 Internal temperature thermistor (1) Release the harness of the internal temperature thermistor from the guide to remove the internal temperature thermistor. Internal temperature thermistor Guide Fig. 3-66 Harness routing : Refer to "2. Internal temperature thermistor". 3-76 Confidential...
Page 201: Eject Sensor Pcb Assy
9.42 Eject sensor PCB ASSY (1) Remove the taptite bind B M4x12 screw to remove the develop drive earth harness. (2) Remove the taptite cup S M3x6 SR screw and the two taptite bind B M4x12 screws. (3) Release the two hooks to remove the main PCB shield calking ASSY. Taptite bind B M4x12 Taptite bind B M4x12 Taptite cup S M3x6 SR...
Page 202 (4) Release the hook to remove the eject sensor PCB ASSY from the pin of the main frame L ASSY. (5) Release the harness of the eject sensor PCB ASSY from the guides of the main frame L ASSY. (6) Release the two hooks to remove the back cover sensor. Eject sensor PCB ASSY Harness Hook...
Page 203: Fuser Gear 28/34
9.43 Fuser gear 28/34 (1) Remove the ejector gear 40. (2) Remove the fuser gear 28/34. Ejector gear 40 Fuser gear 28/34 Fig. 3-69 Gear position : Refer to "Paper eject part". 3-79 Confidential...
Page 204 CHAPTER ADJUSTMENTS AND UPDATING SETTINGS AS REQUIRED AFTER PARTS REPLACEMENT Confidential...
Page 205 CHAPTER 4 ADJUSTMENTS AND UPDATING SETTINGS AS REQUIRED AFTER PARTS REPLACEMENT This chapter describes adjustments and updating of settings, which are required if the main PCB ASSY and some other parts have been replaced. CONTENTS 1. IF YOU REPLACE THE MAIN PCB ASSY..............4-1 1.1 Rewriting the firmware (main firmware, demo firmware) ........
Page 206: If You Replace The Main Pcb Assy
"Brusbsn.exe" file to start it. (4) Download utility (FILEDG32.EXE) Copy it into the temporary folder created on the C drive. (5) Brother maintenance USB printer driver (Maintenance_Driver.zip) Copy it into the temporary folder created on the C drive. Extract the copied file. (6) Firmware Main firmware LZXXXX_$.upd *...
Page 207: Rewriting The Firmware (Main Firmware, Demo Firmware)
" appears on the LCD. (2) Connect the computer to the machine with the USB cable. (3) Double-click the "FILEDG32.EXE" file to start it. Select the "Brother Maintenance USB Printer". (4) Drag and drop a program file that you want to rewrite (for instance, LZXXXX_$.upd) onto the "Brother Maintenance USB Printer"...
Page 208: Initialization Of Eeprom Of Main Pcb Assy (Function Code: 01)
Initialization of EEPROM of Main PCB ASSY (Function Code: 01) Initialize the EEPROM in accordance with "1.3.1 EEPROM parameter initialization (Function code: 01, 91)" in Chapter Setting by Country (Function Code: 74) Make appropriate settings by country in accordance with "1.3.19 Setting by country (Function code: 74)"...
Page 209: Setting The Serial Number And Entering The Adjusted Value Of The Laser Unit
(2) Double-click the "Brusbsn.exe" file that was copied to the temporary folder to start it. (3) Click "Laser 10Model". (4) In the [Port] field, select the port number assigned to the Brother Maintenance USB Printer. If the port number is unknown, follow steps below to check it.
Page 210: Acquisition Of White Level Data (Function Code: 55)
(6) Enter the number (2nd digit from the left) on the laser serial number label attached to the location shown in the illustration below in the [S xxxxxxVXXYY] field. Laser serial number label Laser unit Laser plate (7) Enter the number (last five digits) on the laser serial number label in the [Scanner Video Clk] field, and click the [OK] button.
Page 211: If You Replace The Laser Unit
2. IF YOU REPLACE THE LASER UNIT Entering the Adjusted Value of the Laser Unit Note: • After replacing the laser unit, be sure to attach the serial number label provided with the new laser unit to the laser plate. •...
Page 212 (1) Double-click the "Brusbsn.exe" file to start it. (2) Click "Laser 10Model". (3) In the [Port] field, select the port number assigned to the Brother Maintenance USB Printer. (4) Enter the number (2nd digit from the left) on the laser serial number label attached to the location shown in the illustration below in the [S xxxxxxVXXYY] field.
Page 213: If You Replace The Low Voltage Power Supply Pcb Assy
(2) Connect the computer to the machine with the USB cable. (3) Double-click the "FILEDG32.EXE" file to start it. Select the "Brother Maintenance USB Printer". (4) Drag and drop the "SQWAVE.PJL" file onto the "Brother Maintenance USB Printer" icon. Confidential...
Page 214: If You Replace The Cis Unit
4. IF YOU REPLACE THE CIS UNIT <What to do after replacement> • Acquisition of white level data (function code: 55) • Scanning and printing check • Scanning lock (function code: 06) Acquisition of White Level Data (Function Code: 55) Perform the acquisition of white level data in accordance with "1.3.16 Acquisition of white level data/ compensation of scanning width (Function code: 55)"...
Page 215: If You Replace The Panel Unit
5. IF YOU REPLACE THE PANEL UNIT <What to do after replacement> • Operational check of LCD (function code: 12) • Operational check of control panel buttons (function code: 13) Operational Check of LCD (Function Code: 12) Check performance of the LCD in accordance with "1.3.7 Operational check of LCD (Function code: 12)"...
Page 216: If You Replace The Lcd Unit
6. IF YOU REPLACE THE LCD UNIT <What to do after replacement> • Operational check of LCD (function code: 12) Operational Check of LCD (Function Code: 12) Check performance of the LCD in accordance with "1.3.7 Operational check of LCD (Function code: 12)"...
Page 217: Service Functions
CHAPTER SERVICE FUNCTIONS Confidential...
Page 218 CHAPTER 5 SERVICE FUNCTIONS Describes the maintenance mode which is exclusively designed for the purpose of checking the settings and adjustments using the buttons on the control panel. This chapter also covers not-disclosed-to-users function menus, which activate settings and functions or reset the parts life. CONTENTS 1.
Page 219 2. OTHER SERVICE FUNCTIONS ................. 5-40 2.1 Developer Roller Counter Reset Function............5-40 2.2 Parts Life Reset Function (Drum) ................ 5-41 2.3 Deletion of User Setting Information, etc............. 5-41 2.4 Continue Mode / Stop Mode Settings of Toner Cartridge ........5-42 2.5 Drum Cleaning.....................
Page 220: Maintenance Mode
1. MAINTENANCE MODE The maintenance mode is exclusively designed for the checking, setting and adjustments of the machine by using the buttons on the control panel. In the maintenance mode, the operational check of the LCD, control panel PCB and sensors, print test, display of the log information and error codes, and change of the worker switches (WSW) can be performed.
Page 221: List Of Maintenance-Mode Functions
List of Maintenance-mode Functions Function Function Refer to: Code EEPROM parameter initialization 1.3.1 (5-3) Printout of scanning compensation data 1.3.2 (5-4) Scanning lock 1.3.3 (5-6) ADF performance test 1.3.4 (5-6) Monochrome image quality test pattern 1.3.5 (5-7) Worker switch (WSW) setting 1.3.6 [1] (5-8) Printout of worker switch data 1.3.6 [2] (5-11)
Page 222: Detailed Description Of Maintenance-Mode Functions
Detailed Description of Maintenance-mode Functions 1.3.1 EEPROM parameter initialization (Function code: 01, 91) <Function> This function is used to initialize the setting values of the operation parameters, user switches, and worker switches (WSW) registered in the EEPROM. Entering function code 01 initializes most EEPROM areas. Meanwhile, entering function code 91 initializes only the specified areas as shown in the table below.
Page 223: Printout Of Scanning Compensation Data (Function Code: 05)
1.3.2 Printout of scanning compensation data (Function code: 05) <Function> This function is used to print the brightness level data for scanning compensation. <Operating Procedure> Note: • Be sure to execute this operating procedure not immediately after the power is turned ON, but after conducting the document scanning operation at least once in scanning.
Page 224 Black and white/color scanning Fig. 5-1 Confidential...
Page 225: Scanning Lock (Function Code: 06)
1.3.3 Scanning lock (Function code: 06) <Function> This function is used to disable the scanning operation until the power is turned OFF and then ON again. <Operating Procedure> (1) Press the [0] and [6] buttons in this order in the initial state of the maintenance mode. "SCAN LOCKED"...
Page 226: Monochrome Image Quality Test Pattern (Function Code: 09)
1.3.5 Monochrome image quality test pattern (Function code: 09) <Function> This function is used to print various monochrome test patterns to check any missing image and print quality. <Operating Procedure> (1) Press the [0] and [9] buttons in this order in the initial state of the maintenance mode. (2) Printing of the monochrome image quality test pattern (see the figure below) starts.
Page 227: Worker Switch (Wsw) Setting And Printout (Function Code: 10, 11)
1.3.6 Worker switch (WSW) setting and printout (Function code: 10, 11) [1] Worker switch setting (Function code: 10) The machine incorporates the following worker switch functions which may be activated with the procedures using the buttons on the control panel. The worker switches have been set at the factory in conformity to the codes of each country.
Page 228 WSW No. Function WSW33 Function setting 11 WSW34 Function setting 12 WSW35 Function setting 13 WSW36 Function setting 14 WSW37 Function setting 15 WSW38 V.34 transmission settings WSW39 V.34 transmission speed WSW40 V.34 modem settings WSW41 ON-duration of the scanning light source WSW42 Internet mail settings WSW43...
Page 229 WSW No. Function WSW72 Reserved (Change of the setting is prohibited) WSW73 Reserved (Change of the setting is prohibited) WSW74 ADF stop control WSW75 Paper ejecting distance of the switch back The limited number of the documents in reverse for paper ejection of the WSW76 simplex scanning from ADF The limited number of the documents in reverse for paper ejection of the...
Page 230 [2] Printout of worker switch data (Function code: 11) <Function> This function is used to print the setting items of the worker switches and the set contents. <Operating Procedure> (1) Press the [1] button twice in the initial state of the maintenance mode. "PRINTING" appears on the LCD.
Page 231: Operational Check Of Lcd (Function Code: 12)
1.3.7 Operational check of LCD (Function code: 12) <Function> This function is used to check that the LCD on the control panel works normally. <Operating Procedure> (1) Press the [1] and [2] buttons in this order in the initial state of the maintenance mode. The LCD appears as in <Display 1>...
Page 232: Operational Check Of Control Panel Buttons (Function Code: 13)
1.3.8 Operational check of control panel buttons (Function code: 13) <Function> This function is used to check that the buttons on the control panel are operating normally. <Operating Procedure> (1) Press the [1] and [3] buttons in this order in the initial state of the maintenance mode. "00"...
Page 233 FAX-2840 / 2845 / 2890 / 2940 / 2990 Fig. 5-6 5-14 Confidential...
Page 234: Software Version Check (Function Code: 25)
1.3.9 Software version check (Function code: 25) <Function> This function is used to check the management information of the software programs such as version information and check sum. <Operating Procedure> (1) Press the [2] and [5] buttons in this order in the initial state of the maintenance mode. The machine displays each of items described below on the LCD.
Page 235: Operational Check Of Sensors (Function Code: 32)
1.3.10 Operational check of sensors (Function code: 32) <Function> This function is used to check that the sensors are operating normally. <Operating Procedure> (1) Press the [3] and [2] buttons in this order in the initial state of the maintenance mode. (2) Check mode is entered.
Page 236 (3) Change the detection condition of each sensor and check that the display on the LCD changes depending on the sensor status. For instance, insert the paper through the document detection sensor or the registration front / registration rear sensor, open the front cover or the back cover, etc. (4) When the [Stop/Exit] button is pressed, the machine beeps for one second and returns to the initial state of the maintenance mode.
Page 237: Lan Connection Status Display (Function Code: 33)
1.3.11 LAN connection status display (Function code: 33) <Function> This function is used to check the connection status of the wired LAN. The display items are shown in the table below. LAN connection status Active 100B-FD 100BASE-T Full Duplex Active 100B-HD 100BASE-T Half Duplex Active 10B-FD 10BASE-T Full Duplex...
Page 238: Pc Print Function (Function Code: 43)
1.3.12 PC print function (Function code: 43) <Function> This function is used to change the settings of the various print functions summarized in the table below. <Operating Procedure> (1) Press the [4] and [3] buttons in this order in the initial state of the maintenance mode. "Manual Feed"...
Page 239 Initial Description Set value value AutoFF Time Switching of the time-out period 1 to 99 (seconds) of the auto form feed FF Suppress Switching of the FF Suppress On/Off Auto LF Switching of the auto LF On/Off Auto CR Switching of the auto CR On/Off Auto WRAP Switching of the auto CRLF at...
Page 240 Detail description Emulation Configure the setting for the Emulation. Change the setting of the Function Menu. When the data include the ENTER LANGUAGE, the setting becomes effective. And this setting is ignored. Auto I/F Time Configure the setting for the interface open time. The function is in the PC-Print.
Page 241: Changing Return Value Of Usb No. (Function Code: 45)
1.3.13 Changing return value of USB No. (Function code: 45) <Function> ® When the operating system (OS) installed on the computer is Windows Vista , and the machine is connected to this computer using USB 2.0 FULL, the OS may fail to obtain the serial number of the USB device depending on the computer and USB device.
Page 242: Received Data Transfer Function (Function Code: 53)
1.3.14 Received data transfer function (Function code: 53) <Function> This function is used to transfer the received FAX data to another machine. It is useful when the machine cannot print the received data due to an error current in the printing mechanism. The maintenance information of the machine can also be faxed.
Page 243 Cover page sample Job number to identify the transmission Total number of pages to be transferred Station ID registered in the sender machine Fax number of the sender machine Telephone number of the sender machine Transfer date and time Model code Boot ROM information ROM information Serial number...
Page 244: Fine Adjustment Of Scan Start/End Positions (Function Code: 54)
1.3.15 Fine adjustment of scan start/end positions (Function code: 54) <Function> This function is used to adjust the scan start/end positions on the ADF. <Operating Procedure> (1) Press the [5] and [4] buttons in this order in the initial state of the maintenance mode. "SCAN START ADJ."...
Page 245: Acquisition Of White Level Data/ Compensation Of Scanning Width (Function Code: 55)
1.3.16 Acquisition of white level data/ compensation of scanning width (Function code: 55) <Function> This function is used to acquire the white level of the scanner unit and save it in the EEPROM of the main PCB. Note: • After Deep Sleep mode is released, execute this function code. If the correct white level data is not yet acquired, install the latest firmware.
Page 246: Automatic Scanning Position Adjustment (Function Code: 57)
(2) Double-click the "FILEDG32.EXE" file to start it. Select "Brother Maintenance USB Printer". (3) Drag and drop the "XXXX.prn" file onto the "Brother Maintenance USB Printer" icon. Document data is printed. (4) Cut the printed document data along the cutoff line to the A5 size.
Page 247: Continuous Print Test (Function Code: 67)
1.3.18 Continuous print test (Function code: 67) <Function> This function is used to conduct paper feed and eject tests while printing patterns. <Operating Procedure> (1) Press the [6] and [7] buttons in this order in the initial state of the maintenance mode. "PAPER FEED TEST"...
Page 248: Setting By Country (Function Code: 74)
1.3.19 Setting by country (Function code: 74) <Function> This function is used to customize the machine according to language, function settings, and worker switch settings. Note: • Be sure to perform this procedure after replacing the main PCB ASSY or rewriting the firmware.
Page 249 <Country code list> Country FAX-2840 FAX-2845 FAX-2890 FAX-2940 FAX-2950 FAX-2990 MFC-7240 MFC-7290 U.S.A. 0001 0101 0201 Canada 0002 0102 0202 Germany 2053 2153 2053 (2003) (2103) (2003) U.K. 2004 2004 France 2005 2105 2005 Australia 2056 2056 2256 (2006) (2006)
Page 250 Country FAX-2840 FAX-2845 FAX-2890 FAX-2940 FAX-2950 FAX-2990 MFC-7240 MFC-7290 Bulgaria 2188 (2132) Rumania 2188 (2133) Chile 0236 Czech 2188 Republic (2137) Hungary 2188 (2138) Poland 2188 (2139) Asia 0040 0040 0240 Gulf 0075 0075 (0041) (0041) Brazil 0042 Korea 0040...
Page 251: Printout Of Maintenance Information (Function Code: 77)
1.3.20 Printout of maintenance information (Function code: 77) <Function> This function is used to print the log information. <Operating Procedure> (1) Press the [7] button twice in the initial state of the maintenance mode. (2) The machine prints a list of log information. When printing is completed, the machine returns to the initial state of the maintenance mode.
Page 252 Display information Model name Total printed PC pages The date of printing the maintenance list Total printed list/fax pages Model code Total fed pages per paper size/type Country code Total number of paper jams Switch check sum Paper jams that have occurred in each (Factory management item) section in the machine Toner type...
Page 253: Operational Check Of Fan (Function Code: 78)
1.3.21 Operational check of fan (Function code: 78) <Function> This function is used to check that the fan is operating normally. <Operating Procedure> (1) Press the [7] and [8] buttons in this order in the initial state of the maintenance mode. "FAN: 100%"...
Page 254: Display Of Machine Log History (Function Code: 80)
1.3.22 Display of machine log history (Function code: 80) <Function> This function is used to view the machine's history (log). The display items are shown in the table below. Description Serial USB: Serial number PCB Serial PCB: Main PCB serial number Drum related items DRUM: Number of drum rotations DRUM_PG:...
Page 255 Description Picked-up pages A4+LTR: Pages of A4 or Letter size paper that have by paper size been fed LG+FOL: Pages of Legal or Folio size paper that have been fed B5+EXE: Pages of B5 or Executive size paper that have been fed ENVLOP: Envelops that have been fed Pages of A5 size paper (including A5R) that...
Page 256 Description Number of error HODN_ER: Number of errors caused by dirt on the occurrences corona wire FUSR_ER: Number of fuser unit errors MTLK_ER: Number of laser scanner motor lock errors Error log related MACHINEERR_##: Error history ## displayed for users:Error items code/Page count when occurred COMERR##:...
Page 257: Error Code Indication (Function Code: 82)
<Operating Procedure> (1) Press the [8] and [0] buttons in this order in the initial state of the maintenance mode. (2) Pressing the [Start] or [ ] button displays the next item. Pressing the [ ] button displays the previous item. (3) When the [Stop/Exit] button is pressed, the operation is canceled, and the machine returns to the initial state of the maintenance mode.
Page 258: Exit The Maintenance Mode (Function Code: 99)
1.3.25 Exit the maintenance mode (Function code: 99) <Function> This function is used to exit the maintenance mode. If a fuser error is occurring, this is cleared. <Operating Procedure> (1) Press the [9] button twice in the initial state of the maintenance mode. The machine exits the maintenance mode and returns to the ready state.
Page 259: Other Service Functions
2. OTHER SERVICE FUNCTIONS Developer Roller Counter Reset Function This function allows you to manually perform the same operation as when the toner cartridge is replaced with a new one. The purpose of this function is to provide an error resetting method when the toner life display cannot be cleared because the new toner is not recognized by the machine.
Page 260: Parts Life Reset Function (Drum)
Parts Life Reset Function (Drum) This function is used to reset the relevant part counter when the user replaced a periodical replacement part with the correct procedure, and also used to forcibly reset the relevant part counter when an error cannot be reset because the user did not replace a consumable part with the correct procedure.
Page 261: Continue Mode / Stop Mode Settings Of Toner Cartridge
Continue Mode / Stop Mode Settings of Toner Cartridge You can set the machine to Continue Mode after "Replace Toner" is displayed on the LCD. The machine will continue printing until "Toner Ended" is displayed on the LCD. "Stop" is the default setting.
Page 262: On/Off Setting Of Deep Sleep Function
ON/OFF Setting of Deep Sleep Function In addition to the sleep function with the normal specifications, the Deep Sleep function is prepared to reduce the power consumption. The Deep Sleep function is used to stop the operation of the following functions whereas they are available in the normal sleep mode.
Page 263: Wiring Diagram
CHAPTER 6 WIRING DIAGRAM Confidential...
Page 264 CHAPTER 6 WIRING DIAGRAM This chapter provides the wiring diagram for the connections of the PCBs. CONTENTS 1. WIRING DIAGRAM ....................... 6-1 Confidential...
Page 265 1. WIRING DIAGRAM Wiring diagram PANEL PCB ADF MOTOR RESPONSE PNL_CLK COMMAND COMMAND RESPONSE PNL_CLK R-GND G-GND +3.3V +3.3V REG_F REG_R B-GND SEN_REAR SEN_REAR VLED SEN_FRONT +5V(VDD_RHS) VREF MODE CN24 ADF COVER ADF COVER SENSOR SPEAKER VOUT1 VOUT2 THERMISTOR CN25 +3.3V STHM MODEM PCB...
Page 266 CHAPTER PERIODICAL MAINTENANCE Confidential...
Page 267 CHAPTER 7 PERIODICAL MAINTENANCE CONTENTS 1. PERIODICAL REPLACEMENT PARTS ............... 7-1 Confidential...
Page 268 1. PERIODICAL REPLACEMENT PARTS There are no parts to be replaced periodically. Confidential...
Page 269 APPENDIX SERIAL NUMBERING SYSTEM Confidential...
Page 270 APPENDIX 1 SERIAL NUMBERING SYSTEM Serial number labels attached on the machine (2 locations) <How to Read> Serial number Manufacturing line Product Serial number (6-digit) identification code Manufacturing factory No. Year of manufacture 2: 2012 3: 2013 Month of manufacture A : January E : May J : September...
Page 271 APPENDIX DELETING USER SETTING INFORMATION This appendix provides instructions on how to delete user setting information recorded in the machine. Confidential...
Page 272 APPENDIX 2 DELETING USER SETTING INFORMATION In this machine, the user setting information is stored in the EEPROM and flash memory of the main PCB ASSY. You can delete all the data listed below at a time with the procedure given below.
Page 273 APPENDIX INSTALLING MAINTENANCE DRIVER Confidential...
Page 274 APPENDIX 3 INSTALLING MAINTENANCE DRIVER To identify multiple machines connected to the computer via USB, the computer needs to configure the corresponding number of virtual USB devices by a driver or software. If you connect a multiple number of machines to your computer, the same number of virtual USB devices will be automatically configured on your computer.
Page 275 APPENDIX HOW TO MAKE PROTECTIVE MATERIAL FOR DRUM UNIT Confidential...
Page 276 APPENDIX 4 HOW TO MAKE PROTECTIVE MATERIAL FOR DRUM UNIT Protective material Paper strip Follow the procedure below to make the protective material for the drum unit, and use it when packing the machine. <Procedures> (1) Pass the paper strip through the hole on the protective material with the white surface of paper facing down.

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Fax-2845 Fax-2990 Fax-2890 Fax-2940 Fax-2950 Mfc-7240 ... Show all

Brother FAX-2840 Service Manual

Table of Contents

Chapter 1 Specifications

Chapter 2 Troubleshooting

Chapter 3 Disassembly/Reassembly

Chapter 4 Adjustments and Updating Settings as Required after Parts Replacement

Chapter 5 Service Functions

Quick Links

SERVICE MANUAL

Chapters

Troubleshooting

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Summary of Contents for Brother FAX-2840