MX-GT91R

SERVICE MANUAL

COMPACT COMPONENT SYSTEM

Area Suffix

B E EN U.K. Continental Europe Northern Europe

STANDBY/ON STANDBY

PLAY & EXCHANGE

CD-R/RW PLAYBACK

SP-MXGT91R

CA-MXGT91R

Contents
Safety precautions Important for laser products Preventing static electricity Disassembly method Adjustment method 1-2 1-4 1-5 1-6 1-26 Flow of functional operation until TOC read Maintenance of laser pickup Replacement of laser pickup Description of major ICs 1-30 1-31 1-31 1-32

COPYRIGHT

2001 VICTOR COMPANY OF JAPAN, LTD.

No.20931 Apr. 2001

Block diagram

FMA-006

RDS IC3 IF FM/DET AM/DET IC 1

FMC-022/024-1

RDS TUNER

CN11 CN1

FMH-031-2
MAIN SOURCE SELECTOR & E.VOL IC436 MAIN MAIN HPF MUTE SYSTEM IC481

FW714 CN704

FMH031-1

FMB-028-5

RELAY RY2

SPEAKER TERMINAL

FM FRONTEND TU1

POWER AMP IC602

CN215 CN205 CN207 CN217
AM CD MW RF/OSC COIL PLL Synthesizer IC2 TAPE VOLDA,VOKCK INPUT AMP IC 501 DIGITAL OUT TX HARMONICS GENERATOR IC 502 LPF IC 526
SUB WOOFER POWER AMP IC 701 RELAY RY1
L MOTOR DRIVER IC 851 R MOTOR DRIVER IC 852

FMN-008

CN661 CN651

CN870/CN871

CN860/CN861

FMB-028-1

FW915 FW915

FMB-028-3

KEY1,11 CD1LED CD2LED CD3LED KEY
CAMCAMUNIT MICOM CD CHANGER CONTROL IC 251

KCMND MSTAT KCLK MRDY

LED CD OUT SLCKEY TX

CN804 CN854

MICOM IC 810

FW901 CN911

FMH-031-3
SEARCH R,F KEY21,22 SEARCH KNOB

1SSW 3SSW 1MSW 3MSW

PICKUP

TRACKING FOCUS

A+C B+D EF F T
LED RF & SERVO AMP IC601 ARF DIGITAL SERVO & PROCESSOR IC 651 FL DISPLAY FL 801 VOL KEY2,3,21,32,41,42

FMB-028-2

CN880 CN870
MAIN VOL WOOFER VOL SOUND MODE

SPINDLE

FOCUS/SPINDLE/ FEED/TRACKING FM SM BTL DRIVER IC801 DRIVER CN305 CN316 CN306

PB MECHA HEAD

FMP-007-1
DRIVER PB/REC AMP IC302 SERIAL TO PARALLEL PORT EXTENSION IC303

FMP-007-2

PB MECHA

R L RP MECHA HEAD

SLCKEY2 PHB
SW302 SW306 IC331 SOLENOID
SOLENOID DRIVE FOR RP MECHA Q3314 Q3315 SOLENOID DRIVE FOR PB MECHA Q3312 Q3313

SLCK PHA

PP MECHA IC332

PHOTO A,B HEAD SW IC301

SLCKEY1 2

SW303 SW304 SW305 SW316

SOLENOID
Standard schematic diagrams

Power supply section

0.33( 1/2W) R1002 CN220 QGD2504C1-03Z CN214 QJK015-071214 T001 QQT0320-001

0.33( 1/2W)

0.33( 1/2W) C252 0.0047/250 R1002 F001

QGA7901C1-02

SHEET 4/8

F001 5A-125V

R1002 T001 CN220 QGD2504C1-03Z QJK015-071214 CN214 F102 T3.15AL QQT0320-002

CN218 QGA3901C1-02

CN209 WJK0070-002A
CN214 QJK015-071214 F102 T4AL F101 T4AL

F001 T2AL

CN220 QGD2504C1-03Z

T001 QQT0320-003

QSK0094-001

F102 6A-125V F101

CN250 QGA7901C1-02

6A-125V

SHEET 2/8

F101 T3.15AL

D254 1SS133

CN218 QGA7901F1-03

CN208 WJK0114-001A
QGB2510K2-04 2SC2785 Q250 R250 Q251 2SC2235

D251 1SS133

R253 3.3k C253

D252 1N4003

0.0047

MTZJ6.2A

0.33( 1/2W) R1002 T001 QQT0320-003
CN220 QGD2504C1-03Z CN214 QJK015-071214 F102

C251 470/16

QQT0253-002

2A-250V

2/8 3/8 4/8 5/8

4A-250V F101 4A-250V

CN208 WJK0114-001A 0.33( 1/2W) R1002 T001 QQT0320-002 CN220 QGD2504C1-03Z
CN218 QGA3901C1-02 CN209 WJK0070-002A

6/8 7/8

C252 0.0047/250 F001
QJK015-071214 CN214 F102 T3.15AL

F101 0.33( 1/2W) T3.15AL

CN219 QGA7901C1-04 CN209 WJK0071-002A

R1002 T001 CN220 QGD2504C1-03Z CN214 QJK015-071214 F102 T4AL F101 T4AL QQT0320-003

R253 3.3k

QGB2510K2-04 F003 T2AL F001 T4AL CN218 QGA7901F1-03 CN208 WJK0114-001A CN250 2SC2785 Q250 R250 3.3k Q251 2SC2235

D255 0.0047

MTZJ6.2A D256 C250 C251 470/16
Parts are safety assurance parts. When replacing those parts make sure to use the specified one.

SHEET 1/8 H

SHEET 1/8
CN203 QGB2510J1-04 CN202 QGB2510J1-08

MAINL MAINR

SHEET 3/8
CN706 QGD2504C1-03Z CN704 QGD2504C1-03Z CN703 QGD2504C1-03Z

SHEET 5/8

CN204 QGA3901C1-07

10K R389

Q373 KRA104M-T

Q737 KRA111M-T

PRT SWFB SURR.CTRL
C726 KTA1268/GL/-T R727 100K
4.7K 4.7K 4.7K 4.7K R736 R734 R733 R735

CN201 QGB2510J1-09

DC regulation & audio output section

Q374 2.7K KRC104M-T R383

R385 5.6K

10/25 R730 10K R725 82K

MTZ2.4JB D280
C372 22/50 R283 R729 100K

Q726 10K R728 820

15K D369
47K 1 R284 C280 0.22/R246 R248 RR249 47/63 R640 R639 C281 Q371 Q372

MTZ10JC C729 47/16

Q728 2A02M C373 0.01

D370 100K

2SC2389S/SE/-T Q734

2SC3576-JVC-T

MTZJ11C C374 D234 D728 2A02M 3300/25 1SS133 C253 R205 100K C221 MTZJ9.1B-T2 D220 4.7/50 R217 27K

R242 10K

Q735 2SC3576-JVC-T Q733 2SC3576-JVC-T

KTC3199/GL/-T

22/50 4.7/50
D723 MTZJ36A-T2 R741 R723 R724 R742 RC707 47/63

L201 QQR0779-001Z

MTZJ15C-T2 MTZJ15C-T2

C212 0.082 C214

D227 C216 Q240 D223

D724 MTZJ36A-T2

4.7p R707 C709

100/35

R774 C715 0.047 C713 0.047

R715 10

10K 1SS133

1N4003S-T5

D217 D221 MTZJ5.1B C223 R207 10K R210 3K 22/50 0.082 C213 C211 R203 7.5K 22/50 D219 MTZJ33C

C219 0.01

1N4003S-T5 C217

R753 0.22

1N4003S-T5 D218
10 R713 L701 R721 10K Q701 KTA1268/GL/-T R719 5.6K R720 5.6K D719 0.45

KTC3199/GL/-T Q204

R754 0.22

0.082 R218 27K

Q201 KTA1023/0Y/-T

0.022 R761

R717 1K 1SS133 D720 KTA1268/GL/-T 1SS133 R722 10K R714

C220 22/50 R204 22K

R215 47K C204 C202 0.1 C203 0.1

R718 1K

C730 0.022 R762 1K Q702

R766 33k

220P C706
CN205 QGB2510J1-14 CN215 QGB2510K2-14

R965 10K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K 100K R962

QRB169J-104

QQL231K-220Y

R837 R836 R835 R834 R833

R832 R831 R891

17G R874

R872 R870

R890 P10 100K

R871 16G 100K

2G R856 100K G2

14G 100K

R897 R902

G2 G3 4G 5G 6G 7G 8G 9G 10G 11G 12G G13 G14 G15 G16 G1 G1 C816 47/16

16G 15G

P1 P2 P3 P4 P5 P6 P7 8P P9 10P P11 P12 P13 P14 P15 P16

G17 P17

P18 P19

P22 P10

L872 QQR0779-001Z SPI_A SPI_B C857 C873 22/50 0.22/50
1G 2G 3G 4G 5G 6G 7G 8G 9G 10G 11G 12G 13G

SPIDTI

R878 C874 C875
100K 0.1MY 0.1MY R877 10K C872 0.22/50 TUCE SMUTE SEARCH-LED CD1LED CD2LED CD3LED R_SEARCH MSI MPX INH F_SEARCH VOLVOL+ SOUNDMODER839 1K IC810 MN101C35DEA

14G 15G 16G 17G

QGF1205F1-17 CN860 MSI MPX INH SMUTE TUCE VC3RESET KCMND MSTAT KCLK DATA CK SPI-IN MRDY RDS-DATA/KARAUKE RDS-CLK ECON SPI_IN

BA3835S

VC3RESET SLLCE EXTCE VOLCK FVOLDA RECON TAPELED PRT RDS_CLK SOUNMODE+ PHOTOB PHOTOA REMIN SPI_B SPI_A RDS_DATA AUXMUTE BASSVOLBASSVOL+ RST R894

10K 56K R816 R815 56K

QGF1210G1-24 CN880

220 220

C862 4.7/50

R864 10K

R862 22

Q860 KTC3199/GL

D805 R838 R855 R820 R819 R851
1SS133-T2 1K 1K 1K 1K 1K R849 1K

R895 R893

R824 R823

C801 0.01MY

L801 QQL29BJ-100Z
KCMND MSTAT KCLK R845 1K R846 1K R847 1K CK

C820 1.5MY

1K R844 CN861

QGF1205F1-17

EXTCE VOLCK VOLDTA VSS C838 0.001
R817 R818 R814 R828 R883 R882 R881

D832 MTZJ5.1B-T2

MTZJ5.1B-T2
KEY1 KEY2 KEY3 KEY4 SLCKEY1 SLCKEY2
RELAY AUXMUTE BASS2 BASS1 PBMUTE SURROUND
ECHO1 ECHO2 RELAY BASS2 BASS1 PBMUTE SURROUND POUT1 VDD C837 100/10 R968 10K

C821 0.01

PRT VOL-CK VOL-DATA
AUXLED SMLED CDLED BASSLED TULED
BASSVOL+ BASSVOLSMODESMODE+ TAPELED VOL+ VOL-

10K R822

D831 C831 C832

SLCKEY1

SLCKEY2

10K KEY1

10K KEY4

BU2092/F

10K KEY2

MTZ6.2JC

1SS119-02-T2

Q877 KRA102M-T 1K R911

R912 10K Q878

KRA102M-T

KRC102M-T

IC830 4.7/50

D815 MTZ6.2JC

D802 1SS133-T2

L813 QQR0779-001Z IC902 BU9253AS C1039 C1045 R1033 8.2K

0.1MY 100/10

0.33MY

QUM153-10DGZ4

C803 470/6.3

C1065 150P

IC901 NJM4580L

JS960 QSW0911-001

1000p C1001 L1001 3900p QQL231K-470Y C1002 3900p

KTA1267/YG/-T

TW800 QUB220-15DMHP

Q941 Q954

L-914SRD-T D943 D954
4.7/50 R954 L-914SRD-T 68 R1065

MTZJ2.4B-T2 D1022

102P C1021
100 C1062 100/10 D942 D953 D956 R953 D957 R956 R1064 1.5k

L1002 QQL231K-470Y

Q953 S944 S945 S946

L-914SRD-T

L-115XSRD-D-T

J1021 QNS0184-001

J1022 QNS0184-001

220/10 R1061 10K

390 R1062 12K

JS962 QSW0862-001

MTZJ2.4B-T2

222P C1070

J1001 QNS0183-001

C963 0.01

R943 10K

R944 5.6K

R945 3.9k
R946 R947 R948 2.7K 2.2k 1.5k

R949 R950 1.2k 1k

C935 0.01

TW801 QUB220-15DMHP

CD serbo section
R887 R886 R885 R884 R883 R882 R881 R880 1K 1K 1K 1K 1K 1K 1K 1K CAM0 CAM1 CAM2 CAM3 CAM4 CAM5 CAM6 CAM7
TP9 TP8 TP7 TP10 1MSW 2MSW 3MSW 3SSW 2SSW 1SSW

IC851 LB1641

IC852 LB1641

1K 1K 1K

R871 R872 R873 R876 R875 R874

22K 22K 22K 22K 22K 22K

R290 R289 R288

LC859 1/16 LC860 1/16

0.01 C853

CN855 QGB2012K2-10

R855 NI

RC852 10/16

RMUP RMDOWN

D851 MTZJ5.6B

M851 MSN-5D257A
LM+ RMC855 0.1/25 KCLK SUBQ SQCK R656 KCMND 1K R256 MSTAT 1K MCS CAM7 CAM6 CAM5 CAM4 CAM3 CAM2 CAM1 CAM0 RMDOWN RMUP LMDOWN LMUP

CN804 SW3

CN854 QGB2016K1-07 R861 R862 R863 R866 R865 R864

M852 MSN-5D257A

LMUP LMDOWN

IC251 UPD780024AGKB25

1K 1SSW 1K 2SSW 1K 3SSW 1K 3MSW 1K 2MSW 1K 1MSW Q842 NI TP6 TP5 TP4 TP3

SW4 SW5 SW6

R277 R276 R275 R274

1K 1K 1K 1K

CN851 NI

22K 22K 22K 22K

R842 4.7K
STAT MRDY R254 1K /RST R6551K DMUTE MCLK R6591K R658 1K MDATA

E406784+001

C693 0.0068

IC652 BA15218F-XE

C812 390P

E406783-001

C813 390P

ESB110-005 R831 150

R808 R807 1.2K

27K R809 1.2K

ECM ECS

R705 5.6K

C695 R706 2K

0.047 R707 6.8K

R696 24K

FM+ FM-

R805 R806

13K 24K

TVD TRV

C694 0.0068

IC652 BA15218F-XE R702 820

C696 10/16 R709 100

C692 390P

R692 10K

R704 10K

A B C D E F G

Head amplifier section

TAPE P.B. signal

SHEET 7/8 H

Tuner section

TU1 QAU0160-001 C17 0.0039

R23 1.8K

C18 0.47/50

C48 0.0022

C54 C53 0.047 22/16 C56 10P LC55 33P

C52 0.27 C51 1/50

C49 C58 C50 470P 0.047 22/16

1SS133-T2 D1 D2

0.022 C3

C47 1/50

220K C19 0.047 R10 2.2K

C57 0.001

C45 10/16 C44 10/16

R38 39K R39 39K

C25 100/10

C20 1000P

R26 2.2K R25 330

2SC2814/4-5/-X

C15 12P

QAX0402-001 IC2

C43 0.0018 R41 3.3K C42 0.0018
C10 12P L3 4.7 J1 QNB0014-001 D4 1SS133-T2 1SS133-T2 D3 Q2 2SC2412K/R/-X Q3 2SC2412K/R/-X Q4 DTA114YKA-X

CF1 QAX0420-001

LC72136N

C40 10/16

LA1838

C16 12P

C32 0.047 C33 0.047

C31 22/16

CF2 QAX0458-001Z R21 5.6K

C22 150P C23 C24

150P 150P R30 1.2K

C37 1/50

C36 1/50

R70 10K

Q5 DTA114YKA-X

T1 QQR0793-001

C38 3.3K 0.22/50

R19 R20

C41 10/16

L1 QQR1094-001

R29 10K R28 10K

C21 0.022

C73 0.1

C70 22P

R27 10K

QAX0263-001Z

C12 0.047

C13 12P

CF3 QAX0610-001Z

R33 330

R71 R72 R73

C30 100/10

LC72723

3.3K C11 0.1 C14 100/10

R16 4.7K R17 68( 1/4W) FR C26 0.01
R32 1K C75 10/50 C76 330P C71 C74 0.1 C72 560P 22P

C7 0.001

C6 0.001

C27 0.01

R31 1K L70

C59 0.001

CN1 QGF1205F1-13
CE CK STEREO 9V 5.6V LOUT GND

ROUT D.GND

FROM CN11 OF FMC-022

RDCL RDDA

FM/ TUNER signal