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Pioneer XR-MR7 Service Manual
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Pioneer XR-MR7 Service Manual

Pioneer XR-MR7 Service Manual

Stereo cd/cd-r receiver
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3 7 63 1515 0
STEREO CD / CD-R RECEIVER
XR-MR7
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
XR-MR7
KU/CA
MY
¶ This product is a system(s) component.
TE
L 13942296513
Be sure to connect it to the prescribed system component(s), otherwise damage may result.
Component
STEREO CD/CD-R RECEIVER
SPEAKER SYSTEM
CONTENTS
1. SAFETY INFORMATION ....................................... 2
4. PCB CONNECTION DIAGRAM ........................... 50
5. PCB PARTS LIST ................................................ 71
www
6. ADJUSTMENT ..................................................... 81
.
PIONEER CORPORATION
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
c
PIONEER CORPORATION 1999
http://www.xiaoyu163.com
Power Requirement
AC120V
AC220-230V
Model
XR-MR7
S-MR7
x
ao
u163
y
i
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
http://www.xiaoyu163.com
2 9
8
RECORDING
DISPLAY
CD1
CDR
CD2
SPC
(DEMO)
CD - RW
REC
CD3
FINALIZE
STEREO MONO TUNED
PGM
RDM ALL RPT-1 SFC
P.BASS SKIP ON A.TRACK D.VOL A.VOL DIG ANA [ 32 44 48 ]
STEREO CD/CD-R RECEIVER XR-MR7
CD
-TUNING+
1
0
1
¡
1
LINE
2
FM/AM
TAPE
CD 1
CD 2
CD 3
CDR
PHONO
6
2
0
3
0
7
3
COMPACT DISC MULTI CHANGER
MULTI JOG
VOLUME
P.BASS
DIRECT REC SELECT
FINALIZE
ERASE
1st TRACK
ALL
1 TRACK
EACH
CD1
CD
CD
CDR
CDR
CDR
ANALOG
DIGITAL
REC
--
+
--
+
6
7
REC LEVEL
REC LEVEL
COMPACT DISC DIGITAL RECORDER
STANDBY/ON
PHONES
TRACK NO.
WRITE(MANUAL)
AUTO/MANUAL
LINE2 IN
OPTICAL
LINE2 OUT
DIGITAL OUT
Q Q
3
6 7
1 3
1 5
Service manual
RRV2250
RRV2248
FOR U.S. MODELS
NECESSARY INFORMATION FOR DHHS
RULES MARKED ON THE REAR BASE AND ON
THE TOP OF CD MECHANISM AS BELOW.
DANGER - LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
7. GENERAL INFORMATION .................................. 91
7.1 DIAGNOSIS ................................................... 91
7.1.1 DISASSEMBLY ........................................ 91
7.2 PARTS ......................................................... 100
7.2.1 IC ........................................................... 100
7.2.2 DISPLAY ................................................ 103
co
.
9 4
2 8
ORDER NO.
RRV2250
Remarks
0 5
8
2 9
9 4
2 8
Remarks
This manual.
m
T - ZZR DEC. 1999 Printed in Japan
9 9
9 9

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  • Page 1: Table Of Contents

    PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936 PIONEER CORPORATION 1999 T –...

  • Page 2: Safety Information

    The use of a substitute replacement component which does Leakage 0.5mA current Device not have the same safety characteristics as the PIONEER tester under recommended replacement one, shown in the parts list in test this Service Manual, may create shock, fire, or other hazards.
  • Page 3 XR-MR7 3 7 63 1515 0 IMPORTANT LASER DIODE CHARACTERISTICS THIS PIONEER APPARATUS CONTAINS MAXIMUM OUTPUT POWER: 23 mW LASER OF CLASS ΙΙΙ b. WAVELENGTH: 778 – 787 nm SERVICING OPERATION OF THE APPARATUS S H O U L D B E D O N E B Y A S P E C I A L L Y INSTRUTED PERSON.

  • Page 4: Exploded Views And Parts List

    Operating Instructions See Contrast table (2) (Dutch/Swedish) Operating Instructions See Contrast table (2) (Portuguese/Spanish) (2) CONTRAST TABLE XR-MR7/MY and /KU/CA are constructed the same except for the following: Part No. Mark Symbol and Description Remarks MY type KU/CA type Power Cord...
  • Page 5 XR-MR7 3 7 63 1515 0 2.2 EXTERIOR SECTION Refer to "2.6 3CD MICROCHANGER MECHA " MY Type MY Type Only Only L 13942296513 50 73 Refer to "2.4 CD-R CORE ASSY (1/2) u163 2.5 CD-R CORE ASSY (2/2) "...
  • Page 6 XR-MR7 3 7 63 1515 0 (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 FM/AM TUNER Module See Contrast table (2) Mecha Base PNB1613 2 CD-R CORE ASSY PXA1625 PCB Spacer (3x12)
  • Page 7 XR-MR7 3 7 63 1515 0 (2) CONTRAST TABLE XR-MR7/MY and /KU/CA are constructed the same except for the following: Part No. Symbol and Description Mark Remarks MY type KU/CA type FM/AM TUNER Module AXQ7068 AXQ7065 AF ASSY AWU7460...
  • Page 8 XR-MR7 3 7 63 1515 0 2.3 FRONT PANEL SECTION 13(1/2) 16 (1/2) 12(2/2) L 13942296513 PCB Cutting 19(4/4) Parts 12(1/2) 13(2/2) 19(3/4) 16 (2/2) 19(2/4) Front Panel Cutting Parts 19(1/4) u163 http://www.xiaoyu163.com...
  • Page 9 CDR LED ASSY AWU7467 Knob R AAB7216 AAK7713 Button Lens MRF AAK7691 (2) CONTRAST TABLE XR-MR7/MY and /KU/CA are constructed the same except for the following: Part No. Symbol and Description Mark Remarks MY type KU/CA type FRONT LINE ASSY...
  • Page 10 XR-MR7 3 7 63 1515 0 2.4 CD-R CORE ASSY (1/2) • Bottom View Refer to "2.5 CD-R CORE ASSY (2/2)" L 13942296513 • CD-R CORE ASSY(1/2) PARTS LIST Mark No. Description Part No. Mark No. Description Part No.
  • Page 11 XR-MR7 3 7 63 1515 0 2.5 CD-R CORE ASSY (2/2) • CD-R CORE ASSY(2/2) PARTS LIST Mark No. Description Part No. SERVO MECHANISM Assy PWZ3759 DC Motor Assy (SPINDLE) PEA1235 DC Motor (CARRIAGE) PXM1042 Float Rubber A AEB7063...
  • Page 12 XR-MR7 3 7 63 1515 0 2.6 3CD MICROCHANGER MECHANISM *1 : Floil (PN-397) *2 : Dyefree (ME-413A) (Gutter) (No.36 Sub Tray Part) (Bottom Gutter) (Inside Gutter) (Gutter) (Left Front Under Gutter) (Bottom Gutter) (Boss) (Gutter) (Whole) (Gutter) (Black)
  • Page 13 XR-MR7 3 7 63 1515 0 • 3CD MICROCHANGER MECHANISM PARTS LIST Mark No. Description Part No. MOTOR UNIT AWU7431 LOADING UNIT AWU7432 SELECT UNIT AWU7433 PICK–UP UNIT KSM213CCM Slider Motor VXM1033 Mecha Base ANW7129 Motor Pulley PNW1634 Lift Spring...

  • Page 14: Block Diagram And Schematic Diagram

    XR-MR7 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3 7 63 1515 0 3.1 BLOCK DIAGRAM (1/2) AA AB (TX) FM/AM TUNER Module AF ASSY KU/CA:Only IC1101 CD ANALOG OUT (CD) (CXA2570N) 3CD MICRO IC1201 RF Amp. CHANGER (CXD2587Q) MECHA.
  • Page 15 XR-MR7 3 7 63 1515 0 : AUDIO SIGNAL ROUTE AMP ASSY IC3031 (LC75396NE) Input Selector, SFC, E-VR IC3301 (STK407-040B) Power Amp. CN3902 RY3601 Phones E-VR LINE DC DET. (REC) Overload DET. HP ASSY IC3151 (BA4558F-HT) (REC) BUFFER IC3081...
  • Page 16 XR-MR7 3 7 63 1515 0 3.2 BLOCK DIAGRAM (2/2 : CD-R) SIGNAL ROUTE (REC) : REC SIGNAL (after A/D) (PB) (PB) : PB OUT (before D/A) (CD) : DIGITAL CN INPUT (LI2) : DIGITAL LINE 2 (DO) : DIGITAL OUT...
  • Page 17 XR-MR7 3 7 63 1515 0 AF ASSY : CN7703 CN901 34.5744MHz IC503 IC561 LH64256CK-70 BA7082F D-RAM VCO IC Address Data (LI2) 17.2872MHz DLINE2 CDLRCK DCDIN (CD) CDBCK IC501 DITOUT (DO) L 13942296513 LC89585 CDDATA DALRCK EFM ENCODER IC...
  • Page 18 (AWU7433) (AWU7461) J8503 J8502 ADD7202 CN5953 CN5954 ADD7203 CDR SW ASSY (AWU7517) MY:Only L 13942296513 1/4- AF ASSY (XR-MR7/MY : AWU7460) (XR-MR7/KU/CA : AWU7448) MY:LEGATO KU/CA:NORMAL XR-MR7/MY Only ADD7201 ADD7200 LEGATO ASSY (AWU7525) 1/5- CD-R CORE ASSY (PYY1273) u163 PDD1195...
  • Page 19 (KU/CA : ATS7272) CN3002 MY : 50/60Hz AC220-230V u163 KU/CA : 60Hz AC120V SUB TRANS AC IN/OUT ASSY ASSY (MY : AWU7471) AC POWER CORD (MY:AWU7470) (KU/CA:AWU7459) MY : ADG1127 (KU/CA:AWU7458) KU/CA : ADG7021 SYSTEM CONNECTOR FOR CT-J7 XR-MR7/MY Only http://www.xiaoyu163.com...
  • Page 20 XR-MR7 3 7 63 1515 0 3.4 FM/AM TUNER MODULE (For MY Type) MIX AMP RF AMP BUFFER IF AMP L 13942296513 FM +B SW AM RF TUNING BLOCK u163 http://www.xiaoyu163.com...
  • Page 21 XR-MR7 3 7 63 1515 0 FM/AM TUNER MODULE (AXQ7068) AF AMP L 13942296513 AF AMP CN6201 KP200IA14L REGULATOR u163 http://www.xiaoyu163.com...
  • Page 22 XR-MR7 3 7 63 1515 0 3.5 FM/AM TUNER MODULE (For KU/CA Type) MIX AMP RF AMP 1T378A BUFFER IF AMP L 13942296513 FM +B SW MW RF TUNING BLOCK AKX7041 u163 http://www.xiaoyu163.com...
  • Page 23 XR-MR7 3 7 63 1515 0 FM/AM TUNER MODULE (AXQ7065) AF AMP AF AMP L 13942296513 CN6201 REGULATOR KP200IA14L u163 http://www.xiaoyu163.com...
  • Page 24 XR-MR7 3 7 63 1515 0 3.6 CD-R CORE ASSY (1/5) CD-R CORE ASSY (PYY1273) • MECHA. CONTROL µCOM BLOCK L 13942296513 ATIP DECODER u163 http://www.xiaoyu163.com...
  • Page 25 XR-MR7 3 7 63 1515 0 8 bit LATCH 9 10 11 12 L 13942296513 MECHA µ-COM EEPROM IC303 PYY1196 (BR93LC46F) L302,L305-L309, L311-L315,L318,L319 :OTL1040 CN301 CN7702 u163 http://www.xiaoyu163.com...
  • Page 26 XR-MR7 3 7 63 1515 0 3.7 CD-R CORE ASSY(2/5) and CD-R PICKUP CD-R CORE ASSY (PYY1273) • RF PROCESSOR BLOCK CD-R PICKUP CN101 (PEA1351) MULTI PLEXER L 13942296513 (REC) (REC) (REC) (REC) (REC) (REC) u163 MULTI PLEXER http://www.xiaoyu163.com...

  • Page 27: Te L 13942296513

    XR-MR7 3 7 63 1515 0 : RF SIGNAL ROUTE (REC) : AUDIO SIGNAL ROUTE (REC) CN102 L 13942296513 RF PROCESSOR (REC) (REC) (REC) (REC) (REC) (REC) u163 http://www.xiaoyu163.com...
  • Page 28 XR-MR7 3 7 63 1515 0 3.8 CD-R CORE ASSY (3/5) CD-R CORE ASSY (PYY1273) • SERVO BLOCK L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 29 XR-MR7 3 7 63 1515 0 MULTI PLEXER L 13942296513 CDR SERVO AMP u163 http://www.xiaoyu163.com...
  • Page 30 XR-MR7 3 7 63 1515 0 3.9 CD-R CORE ASSY (4/5) CD-R CORE ASSY (PYY1273) • DIGITAL BLOCK D-RAM (REC) EFM ENCODER IC L 13942296513 (REC) (DI1) (DI2) (REC) (REC) (REC) STRATEGY CONTROL u163 http://www.xiaoyu163.com...
  • Page 31 XR-MR7 3 7 63 1515 0 : AUDIO SIGNAL ROUTE (REC) : REC SIGNAL (after A/D) (PB) : PB OUT (before D/A) (DI1) : DIGITAL INPUT1 (DI2) D-RAM : DIGITAL INPUT2 (DO) : DIGITAL OUT : The power supply is shown with the marked box.
  • Page 32 XR-MR7 3 7 63 1515 0 3.10 CD-R CORE ASSY(5/5), SERVO MECHANISM, LOADING A and LOADING B ASSYS CD-R CORE ASSY (PYY1273) • DECODER BLOCK 5ch ACTUATOR DRIVER CN453 CN451 CN452 L 13942296513 LOADING A CN501 S501 ASSY (PWZ3760)
  • Page 33 XR-MR7 3 7 63 1515 0 CD DECODER L 13942296513 CN901 u163 : RF SIGNAL ROUTE : AUDIO SIGNAL ROUTE : The power supply is shown with the marked box. http://www.xiaoyu163.com...
  • Page 34 XR-MR7 3 7 63 1515 0 Note : VOLTAGES and WAVEFORMS The encircled numbers denote measuring point in the schematic diagram. CD-R CORE ASSY CD-R CORE ASSY DGAI D8CM CN301 - pin 5 (MREQ) CN301 - pin 13 (MSI)
  • Page 35 XR-MR7 3 7 63 1515 0 CD-R CORE ASSY CD-R CORE ASSY CN102 - pin 1 (RF) TP113 (RFAC) TP210 (FG) V: 20mV/div.(10 : 1) H: 0.5µsec/div. V: 0.2V/div.(10 : 1) H: 0.2µsec/div. V: 0.2V/div.(10 : 1) H: 1msec/div.
  • Page 36 XR-MR7 3 7 63 1515 0 CD-R CORE ASSY CD-R CORE ASSY CN501 - pin 2 (ADBCK) CN501 - pin 14 (DABCK) IC501 - pin 88 (EFM) CN452 - pin 2 (SL +) V: 0.2V/div.(10 : 1) H: 0.2µsec/div.
  • Page 37 XR-MR7 3 7 63 1515 0 3.10 MOTOR, LOADING, SELECT and PICKUP UNITS SELECT UNIT : FOCUS SERVO LOOP LINE : TRACKING SERVO LOOP LINE (AWU7433) : SPINDLE SERVO LOOP LINE : CARRIAGE SERVO LOOP LINE : LOADING SERVO LOOP LINE...
  • Page 38 XR-MR7 3 7 63 1515 0 3.11 AF (1/4) and H.P ASSYS C3205 CN5403 470p 4.952V (L1) (L1) µ (REC) (Lin) C3203 470p C3204 11.738V 470p (L2) KU/CA :220p KU/CA :220p (L1) MY : 330 p MY : 330 p...
  • Page 39 XR-MR7 3 7 63 1515 0 SIGNAL ROUTE (CD) (CDR) : CD AUDIO SIGNAL : CD-R AUDIO SIGNAL (L1) (TX) : LINE 1 SIGNAL : TUNER AUDIO SIGNAL AF ASSY(1/4) (Lin) (L2) : LINE 2 SIGNAL : LINE IN SIGNAL...
  • Page 40 XR-MR7 3 7 63 1515 0 3.12 AF (2/4) and LEGATO ASSYS 4.888V 5.948V 4.868V (SM) (SM) (SM) (SM) (SM) (SM) (CM) (CM) (CM) (TS) (TS) (FS) (FS) L 13942296513 5.948V 5.681V 1.629mV 0.087V IC1101- Pin 16 : 4.889V...
  • Page 41 XR-MR7 3 7 63 1515 0 AF ASSY(2/4) (MY : AWU7460) (KU/CA : AWU7448) KU/CA:Only MY:Only W267 (SM) (CM) (CM) (CD) (TS) W268 (TS) (FS) (FS) KU/CA:Only –5.673V 4.936V 100p MY:Only 4.881V 4.885V 11.740V (PC) L 13942296513 MY:Only 2.120V 4.870V...
  • Page 42 XR-MR7 3 7 63 1515 0 3.13 AF ASSY (3/4) AF ASSY(3/4) (MY : AWU7460) 11.735V (KU/CA : AWU7448) (CDR) (CDR) 6.247V (CDR) (CDR) 4.934V R7406 KU/CA:220 MY:100 6.247V R7407,R7408 4.935V KU/CA : 0 6.247V MY:100 C7412 KU/CA:STBY KU/CA:PCM1716E...
  • Page 43 XR-MR7 3 7 63 1515 0 SIGNAL ROUTE (CDR) : CD-R AUDIO SIGNAL (REC) : RECORDING SIGNAL R7451 VTL1096 KU/CA:560 MY : 0 L7454 R7492 KU/CA:330 4.951V MY : 1.8k V+5D 17.40mV 2.002V 2.167V 16.10mV 4.585V 57.75mV 4.939V L 13942296513 VTL1096 4.906V...
  • Page 44 XR-MR7 3 7 63 1515 0 3.14 AF (4/4), FRONT LINE, CDR SW and CDR LED ASSYS 4.633V 5.525V 4.632V 4.952V L 13942296513 5.505V FRONT LINE ASSY (MY:AWU7450, KU/CA:AWU7438) (L2) (L2) L5404 VTL1096 (L2) (REC) CN3201 J5401 DB011ND0 L5406...
  • Page 45 XR-MR7 3 7 63 1515 0 AF ASSY(4/4) (MY : AWU7460) (KU/CA : AWU7448) 37.30V AC:7.704V 4.707V 4.632V 5.051V 5.524V MY:Only L 13942296513 CDR LED ASSY CDR SW ASSY (AWU7517) (AWU7467) : The power supply is shown CN5952 CN5953 with the marked box.
  • Page 46 XR-MR7 3 7 63 1515 0 3.15 AMP, REG, SECONDARY, PRIMARY, SUBTRANS and AC IN/OUT ASSYS 23.083V -39.32V MY:Only 39.44V (MAIN) 39.41V -23.035V 4.899V (MAIN) 36.97V L 13942296513 POWER SECONDARY TRANSFORMER ASSY 6.69V (AWU7451) 21.68V 11.76V 6.69V 14.65V AKP1121 (MY)
  • Page 47 XR-MR7 3 7 63 1515 0 SIGNAL ROUTE (MAIN) CN6201 (MY TYPE) : MAIN OUT SIGNAL AMP ASSY (TX) : TUNER AUDIO SIGNAL CN6201 (KU/CA TYPE) (MY : AWU7464) (KU/CA : AWU7555) R6099 KU/CA:1.2k (MAIN) (MAIN) MY : 0 4.944V...
  • Page 48 XR-MR7 3 7 63 1515 0 3.16 DISPLAY and SW JOG ASSYS DISPLAY ASSY (AWU7461) 36.6V 4.96V 4.95V L 13942296513 DISPLAY ASSY S5901 : 1 0 u163 S5919 : ¡ (+) S5909 : CD-R S5902 : 2 0 S5914 : FM/AM...
  • Page 49 XR-MR7 3 7 63 1515 0 SW JOG ASSY (AWU7466) 1-TRACK RENTAL POWER REC/PLAY L 13942296513 SW & JOG ASSY CN5954 CN5962 u163 S5951 : TIMER/CLO. S5959 : RENTAL S5952 : ENTER S5960 : 1–TRACK S5953 : MENU S5961 : ALL...

  • Page 50: Pcb Connection Diagram

    XR-MR7 3 7 63 1515 0 4. PCB CONNECTION DIAGRAM NOTE FOR PCB DIAGRAMS : 1. Part numbers in PCB diagrams match those in the schematic 3. The parts mounted on this PCB include all necessary parts for diagrams.
  • Page 51 XR-MR7 3 7 63 1515 0 4.2 FM/AM TUNER MODULE (For KU/CA Type) CN6001 FM/AM TUNER MODULE VR6201 Q6203 Q6204 L 13942296513 SIDE A FM/AM TUNER MODULE (ANP7159-B) Q6304 Q6302 Q6303 Q6301 Q6202 Q6201 IC6201 Q6401 Q6214 Q6403 IC6202...
  • Page 52 XR-MR7 3 7 63 1515 0 4.2 CD-R CORE ASSY SIDE A • This PCB is a four-layered board. CD-R CORE ASSY CN551 CN501 CN601 CN7703 L 13942296513 CN7702 CD-R PICKUP CN7701 (PNP1465-B) VR164 VR161 VR141 VR162 VR163 VR101...
  • Page 53 XR-MR7 3 7 63 1515 0 SIDE B • This PCB is a four-layered board. CD-R CORE ASSY L 13942296513 (PNP1465-B) Q551 Q202 IC255 u163 IC505 IC508 IC181 Q102 IC561 IC141 IC161 Q103 Q141 http://www.xiaoyu163.com...
  • Page 54 XR-MR7 3 7 63 1515 0 4.3 SERVO MECHA, LOADING A and LOADING B ASSYS SERVO SERVO CARRIAGE MOTOR MECHANISM MECHANISM ASSY ASSY SPINDLE MOTOR L 13942296513 CN452 LOADING A LOADING A ASSY ASSY CN451 LOADING B LOADING B...
  • Page 55 XR-MR7 3 7 63 1515 0 4.4 SELECT UNIT, LOADING UNIT and MOTOR UNIT SELECT UNIT LOADING UNIT CN1302 L 13942296513 (ANP7314-B) (ANP7314-B) (ANP7314-B) MOTOR UNIT SIDE A u163 http://www.xiaoyu163.com...
  • Page 56 XR-MR7 3 7 63 1515 0 4.5 AF ASSY CN3001 CN3002 CN901 CD MECHA CD M AF ASSY L 13942296513 CN1902 u163 http://www.xiaoyu163.com...
  • Page 57 XR-MR7 3 7 63 1515 0 CD MECHA CD MECHA CN5601 CN6002 SIDE A Q1346 Q1342 Q1341 Q1345 Q1101 IC21 L 13942296513 CN5403 u163 CN501 CN301 (ANP7320-D) http://www.xiaoyu163.com...
  • Page 58 XR-MR7 3 7 63 1515 0 AF ASSY L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 59 XR-MR7 3 7 63 1515 0 SIDE B Q5752 Q5751 Q3125 Q1343 Q1346 IC5751 Q1342 Q1344 Q1341 Q1345 Q5501 Q1406 Q5505 IC1301 Q1405 IC1101 IC5501 Q4602 Q1404 Q4601 Q5502 Q1901 IC1201 Q1403 Q1402 Q3142 Q1402 L 13942296513 IC3131 Q1203...
  • Page 60 XR-MR7 3 7 63 1515 0 4.6 AMP, H.P and REGULATOR ASSYS CN6201 (MY) CN6201 (KU/CA) AMP ASSY L 13942296513 IC3301 IC5001 Q5001 IC12 (ANP7321-D) Q301 IC301 IC15 Q302 IC5003 CN6003 CN521 CN3102 u163 http://www.xiaoyu163.com...
  • Page 61 XR-MR7 3 7 63 1515 0 SIDE A H.P ASSY To GND Chassis (ANP7320-D) J5401 REGULATOR ASSY L 13942296513 IC503 IC502 IC501 IC504 IC505 Q502 Q501 (ANP7320-D) u163 http://www.xiaoyu163.com...
  • Page 62 XR-MR7 3 7 63 1515 0 SIDE B H.P ASSY (ANP7320-D) L 13942296513 REGULATOR ASSY (ANP7320-D) u163 http://www.xiaoyu163.com...
  • Page 63 XR-MR7 3 7 63 1515 0 SIDE B AMP ASSY L 13942296513 (ANP7321-D) Q320 Q3608 Q3611 Q3610 Q3303 Q3301 IC3301 Q301 u163 Q5001 Q3612 Q322 Q3605 Q3606 Q3607 Q303 Q302 Q3302 Q324 Q323 IC5003 Q304 Q3609 IC5001 http://www.xiaoyu163.com...
  • Page 64 XR-MR7 3 7 63 1515 0 4.7 AC IN/OUT, SUBTRANS, PRIMARY and SECONDARY ASSYS SIDE A AC IN/OUT SUBTRANS ASSY ASSY AC IN AC OUT CN21 (ANP7321-D) (ANP7321-D) L 13942296513 PRIMARY ASSY (ANP7321-D) POWER TRANSFORMER SECONDARY ASSY (ANP7320-D) u163...
  • Page 65 XR-MR7 3 7 63 1515 0 SIDE B SUBTRANS AC IN/OUT ASSY ASSY (ANP7321-D) (ANP7321-D) L 13942296513 PRIMARY ASSY (ANP7321-D) SECONDARY ASSY (ANP7320-D) u163 http://www.xiaoyu163.com...
  • Page 66 XR-MR7 3 7 63 1515 0 4.8 DISPLAY ASSY SIDE A DISPLAY CN5951 ASSY Q5601 L 13942296513 CN5501 u163 (ANP7321-D) http://www.xiaoyu163.com...
  • Page 67 XR-MR7 3 7 63 1515 0 SIDE B DISPLAY ASSY Q5603 IC5602 IC5601 Q5602 L 13942296513 IC5801 u163 (ANP7321-D) http://www.xiaoyu163.com...
  • Page 68 XR-MR7 3 7 63 1515 0 4.9 SW JOG, CDR SW and CDR LED ASSYS SIDE A SW JOG ASSY CDR LED ASSY (ANP7320-D) CDR SW ASSY L 13942296513 (ANP7320-D) u163 (ANP7321-D) CN5901 http://www.xiaoyu163.com...
  • Page 69 XR-MR7 3 7 63 1515 0 SIDE B SW JOG ASSY CDR LED ASSY (ANP7320-D) CDR SW ASSY L 13942296513 (ANP7320-D) Q5951 Q5952 u163 (ANP7321-D) http://www.xiaoyu163.com...
  • Page 70 XR-MR7 3 7 63 1515 0 4.10 FRONT LINE and LEGATO ASSYS FRONT LINE ASSY FRONT LINE ASSY CN3201 Q3123 Q3124 (ANP7320-D) L 13942296513 LEGATO ASSY : MY Only LEGATO ASSY : MY Only IC1902 CN1901 IC1901 u163 (ANP7320-D)

  • Page 71: Pcb Parts List

    XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. 5. PCB PARTS LIST • NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
  • Page 72 XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. 7 CONTRAST OF PCB ASSEMBLIES AF ASSY AWU7460 and AWU7448 are constructed the same except for the following : Part No. Mark Symbol and Description...
  • Page 73 XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. AC IN/OUT ASSY AWU7470 and AWU7458 are constructed the same except for the following : Part No. Mark Symbol and Description Remarks AWU7470...
  • Page 74 XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. PCB PARTS LIST FOR XR-MR7/MY UNLESS OTHERWISE NOTED FM/AM TUNER MODULE (AXQ7068) C6244 CEAS470M16 C6249,C6250,C6265,C6266 CEAS4R7M50 SEMICONDUCTORS C6258 CEJA470M16 IC6201 LA1832ML C6215 CFTLA103J50...
  • Page 75 XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. F6401 FM BAND PASS FILTERATF-155 CD-R CORE ASSY F6206 FM CERAMIC DISCLI. ATF7008 F6202 AM CERAMIC FILTER ATF7011 SEMICONDUCTORS L6206,L6208,L6403 LAU2R2J IC502 AD1893JST...
  • Page 76 XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. C369,C371,C402,C405 CKSQYF104Z25 CAPACITORS C410,C411,C415,C432 CKSQYF104Z25 C122,C507 CCSQCH100D50 C466,C467,C503,C506,C509 CKSQYF104Z25 C159,C434,C551,C564 CCSQCH101J50 C511,C513,C516,C523,C552 CKSQYF104Z25 C508 CCSQCH120J50 C554,C560,C565 CKSQYF104Z25 C563 CCSQCH160J50 C406 CCSQCH221J50 C124,C328,C570,C904 CKSQYF473Z25 C325 (1F/5.5V)
  • Page 77 XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. D5505-D5507,D7231 1SS133 MOTOR UNIT D3152,D3153,D7403,D7404 1SS355 SWITCH D3101,D7301,D7401 DAN202K D7302,D7402 DAP202K S106 DSG1016 D1343,D5504 S5688G OTHERS D3102,D7232 UDZS6.2B 6P CABLE HOLDER 51048-0600 COILS...
  • Page 78 XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. CN21 5P JUMPER CON. 52147-0510 C3060,C7301,C7302 CEJA1R0M50 CN5501 27P FFC CONNECTOR 9604S-27C C3069 CEJA220M25 CN3011 4P PIN JACK AKB7015 C3999 CEJA220M35 CN3101 4P SPEAKER TERMINAL AKE7030...

  • Page 79: Primary Assy

    XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. C305,C3313,C3314,C3604,C5007 CEAT1R0M50 CAPACITORS C306 CEAT220M50 C5006 CEAT102M25 C3602 CEAT221M16 CQMA103J50 C301-C304 CEAT222M50 C5001 CEAT330M2A OTHERS C5004,C5005 CEAT470M10 1002 12P CABLE HOLDER 51052-1200 C5002 CEAT470M2A 2mm12P JUMPER WIR.
  • Page 80 XR-MR7 3 7 63 1515 0 Mark No. Description Part No. Mark No. Description Part No. SWITCHES FRONT LINE ASSY S5901-S5909,S5914-S5921 ASG7013 SEMICONDUCTORS CAPACITORS Q3123,Q3124 2SD2114K C5612 CCSQCH101J50 C5928 CCSQCH221J50 COILS C5610 CEAT101M10 L5401, L5402 LAU100J C5608 CEAT220M50 L5404- L5409...

  • Page 81: Adjustment

    XR-MR7 3 7 63 1515 0 6. ADJUSTMENT 6.1 TUNER SECTION 6.1.1 For MY Type FM Tuner Section • Set the mode selector to FM BAND. • Connect the wiring as shown in Fig. 1. FM SG (1kHz, ± 75kHz dev.)
  • Page 82 XR-MR7 3 7 63 1515 0 6.1.2 For KU/CA Type FM Tuner Section • Set the mode selector to FM BAND. • Connect the wiring as shown in Fig. 3. FM SG (1kHz, ± 75kHz dev.) Reception Step Adjustment...
  • Page 83 XR-MR7 3 7 63 1515 0 6.2 CD TEST MODE NOTE: There is no information to be shown in this CD adjustment. How to Start/Cancel Test Mode TEST MODE : ON POWER ON TEST POINT " " " VOL 0...
  • Page 84 TQ8215 + TQ82010 + TQ82017 LE8010 (by LEADER) (2) Oscilloscope (3) CD Jitter Meter (4) Remote control supplied with XR-MR7 (AXD7242) (LD service remote control GGF1067) 6.3.3 TEST MODE 7 Test Mode For adjustment, set the unit to Test mode of CDR.
  • Page 85 3 7 63 1515 0 6.3.4 Operations in Test Mode Please use the remote control provited with the XR-MR7 (AXD7242 or the LD sevice remote control (GGF1067) In Test mode, the following adjustment functions are assigned to the buttons, as explained below.
  • Page 86 XR-MR7 3 7 63 1515 0 6.4 ADJUSTMENT 1 (LASER DIODE POWER ADJUSTMENT) 7 List of Adjustment (1) : 6.4.1 Playback Power Adjustment (2) : 6.4.2 CD-R Pecord Power Adjustment (2) : 6.4.3 CD-RW Pecord Power Adjustment Note : (1) – (3) " ANA " Segment lights this time...
  • Page 87 XR-MR7 3 7 63 1515 0 DANGER – LASER RADIATION WHEN OPEN. AVOID DIRECT EXPOSURE TO BEAM. 6.4.2 CD-R Record Power Adjustment Test Point Pickup objective lens Adjustment Point VR163 (R REC), VR162 (R O.D.) VR163 : 4.60 mW ± 0.1 mW Adjustment Value VR162 : Addition of 0.1 mW ±...
  • Page 88 XR-MR7 3 7 63 1515 0 6.5 ADJUSTMENT 2 (SERVO SYSTEM ADJUSTMENT) 7 List of Adjustment (4) : 6.5.1 Focus Offset Adjustment (5) : 6.5.2 M–S Mix Ratio Adjustment (6) : 6.5.3 Tracking Offset Adjustment (6) : 6.5.4 Focus Bias Adjustment CD-R CORE ASSY For servo adjustment, set the INPUT SELECTOR to OPTICAL.
  • Page 89 XR-MR7 3 7 63 1515 0 6.5.2 M-S Mix Ratio Adjustment Test Point CN102 - pin 4 (TE) and pin 3 (MPP) Test Disc STD-903 Adjustment Point RECORD button and REC MUTE button Adjust until the value of the output signals from pin 4 (TE) and pin 3 (MPP) of CN102 are the same, Adjustment Value or the differential output of these signals is minimal.
  • Page 90 XR-MR7 3 7 63 1515 0 6.5.4 Focus Bias Adjustment Test Point CN102 - pin 1 (RF) Test Disc STD-903 Adjustment Point RECORD button and REC MUTE button Adjustment Value Adjust until RF jitter is minimal or that the eye pattern of the RF waveform is most open.

  • Page 91: General Information

    XR-MR7 3 7 63 1515 0 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY CD CHANGER SECTION Bonnet Case take off (Screw x7) Tray Open (Changer Section) STANDBY/ON Each connector is removed.(x5) (When diagnosing, installs.) CN1101 CN1302 CN1301 CN5501 CN3101...
  • Page 92 XR-MR7 3 7 63 1515 0 3CD MICROCHANGER MECHA SUB Tray (x 3) Hook (x2) is removed and the elevator, the elevator cover, the gear shaft, and the loading gear are removed. (A sub-tray becomes free.) Mecha Base L 13942296513 Main Tray The hook is removed.
  • Page 93 XR-MR7 3 7 63 1515 0 7 Attention when 3CD MICROCHANGER MECHA is assembied Tray installation Not to be caught to the tray when the tray is put, the home lever is opened. The stopper arm is shut. Gear match of sub-tray The stick of Ø3 (plus driver etc.of #0) is...
  • Page 94 XR-MR7 3 7 63 1515 0 CD-R SECTION Bonnet Case is removed. (Screw x7) Tray Open (Changer, CD-R ) STANDBY/ON Each connector is removed. (x7) AF Assy is removed. CN521 CN3102 CN6003 CN5501 CN3101 CN7701 CN7702 Tray Panel CD...
  • Page 95 XR-MR7 3 7 63 1515 0 CD-R CORE Assy DIAGNOSIS OF CD-R CORE ASSY When diagnosing the CD-R CORE Assy, use the following Bridge Flexible Cable and Connector Assys for service. • Flexible Cable and Connector Assys for service CN101 ↔...

  • Page 96: Sequnce After The Power On

    XR-MR7 3 7 63 1515 0 7.1.2 SEQUNCE AFTER THE POWER ON Note 1 : IC No. or P** without name indicate the pin No. Note ; ∗1 : System bus communication of microcomputer. P65 SCLK P43 SDATAIN "H" = Hi "L "...
  • Page 97 XR-MR7 3 7 63 1515 0 ÷ Initialization sequence at outlet ON of 3CD MICROCHANGER MECHA MECHA SW Outlet ON • ESELINIT SW (74pin) • ESEL SW (77pin) • EOPEN SW (73pin) Each mechanism SW is checked. • ECLOSE SW (72pin) •...
  • Page 98 3 7 63 1515 0 7.1.3 ERROR CODE (CD-R) Error Code Display for Service The XR-MR7 can display the total turn-on time of the laser diode and error codes for service. When the STOP key is held down for about 10 seconds in stop state in CD-R mode, an FL display as shown below is obtained.
  • Page 99 XR-MR7 3 7 63 1515 0 Code Symptom Contents of Error Possible Cause Checkpoints • Defective laser diode Defects related to the recording laser • Trouble in RF detection power IC201 (PA9007A) • Defective RFT RFB circuit The unit stops before it •...

  • Page 100: Parts

    XR-MR7 3 7 63 1515 0 7.2 PARTS 7.2.1 IC • The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams. 7 PD5545A (AF ASSY : IC5501) • System Control Microcomputer •...
  • Page 101 XR-MR7 3 7 63 1515 0 • L • • L • i t l − - / ( − l l i l l i L 13942296513 ) - / − u163 − − http://www.xiaoyu163.com...
  • Page 102 XR-MR7 3 7 63 1515 0 7 PE5113B (AF ASSY : IC7501) • Pin Function • MODE Control Microcomputer " " L − c t i l l o > > − " " L l a i l l o...

  • Page 103: Display

    XR-MR7 3 7 63 1515 0 7.2.2 DISPLAY 7 AAV7073 (DISPLAY ASSY : V5601) • FL Display L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 104: Panel Facilities And Specifications

    DISPLAY RECORDING (DEMO) CD — RW FINALIZE STEREO MONO TUNED RDM ALL RPT-1 SFC P.BASS SKIP ON A.TRACK D.VOL A.VOL DIG ANA [ 32 44 48 ] STEREO CD/CD-R RECEIVER XR-MR7 –TUNING+ ¡ LINE FM/AM TAPE CD 1 CD 2...

  • Page 105: Front Panel

    DISPLAY RECORDING (DEMO) CD — RW FINALIZE RDM ALL RPT-1 SFC P.BASS SKIP ON A.TRACK D.VOL A.VOL DIG ANA [ 32 44 48 ] STEREO MONO TUNED STEREO CD/CD-R RECEIVER XR-MR7 –TUNING+ ¡ LINE FM/AM TAPE CD 1 CD 2...

  • Page 106: Display Section

    XR-MR7 3 7 63 1515 0 7 Display Section £ ¡ ™ ¢∞ § RECORDING CD–RW FINALIZE STEREO MONO TUNED RDM ALL RPT-1SFC P.BASS SKIP ON A.TRACK D.VOL A.VOL DIG ANA [ 32 44 48 ] 45 6 7 8 9 0 - &...

  • Page 107: Remote Control Unit

    XR-MR7 3 7 63 1515 0 7 Remote Control Unit 1 SLEEP 2 STANDBY/ON Press once to turn power on. A second press puts the receiver in standby mode and the standby indicator will light. 3 LINE STANDBY SLEEP VOLUME Press to select external component hooked up to line input jacks.

  • Page 108: Specifications

    XR-MR7 3 7 63 1515 0 8.2 SPECIFICATIONS Continuous Power Output XR-MR7 (RMS) ............50 W + 50 W Miscellaneous (1 kHz, T.H.D. 10 %, 6Ω) Power Requirements(MY Model) ....AC 220-230V, 50 Hz XR-MR7 (DIN) ............. 35 W + 35 W Power Requirements(KU/CA Model) .....

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