JVC MX-GT91R User manual

SERVICE MANUAL
No.20931
Apr. 2001
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
MX-GT91R
COMPACT COMPONENT SYSTEM
MX-GT91R
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
Contents
Area Suffix
B
E
EN
U.K.
Continental Europe
Northern Europe
SP-MXGT91R
SP-MXGT91R
PLAY& EXCHANGE
STANDBY/ON
CD-R / RW PLAYBACK
STANDBY
MX-GT91R
CA-MXGT91R

ABCD E F G
1
2
3
4
5
2-1
MX-GT91R
Block diagram
FM FRONTEND
TU1 FM/DET
AM/DET
IC 1
MW RF/OSC
COIL PLL
Synthesizer
IC2
TUNER
MPX
CD
MAIN
FOCUS/SPINDLE/
FEED/TRACKING
BTL DRIVER
IC801
SOURCE SELECTOR
& E.VOL
IC436
MAIN HPF
MUTE SYSTEM
IC481
INPUT AMP
IC 501
HARMONICS
GENERATOR
IC 502
LPF
IC 526
CN870/CN871
CN661
FW714
CN215 CN205 CN207 CN217
CN704
J81
RELAY
RY2
RELAY
RY1
SPEAKER TERMINAL
POWER AMP
IC 701
SUB WOOFER
POWER AMP
IC602
MAIN
CN1
CN11
CN801 CN601 CN854 CN855
P011 P001 CN804 CN805
RF & SERVO AMP
IC601 DIGITAL SERVO
&
PROCESSOR
IC 651
UNIT MICOM
CD CHANGER
CONTROL
IC 251
L MOTOR
DRIVER
IC 851
R MOTOR
DRIVER
IC 852
CN651 CN860/CN861
CAM0 3
CAM4 7
1SSW 3SSW
1MSW 3MSW
A+C
B+D
E F
F
T
FM SM
ARF
TX
CD OUT
L CAM
R CAM
SW1 6
PICKUP
TRACKING
FOCUS
FEED
M
MICOM
IC 810
FL DISPLAY
FL 801
CN880
CN870
CN911
FW901
FW915 FW915
KEY
LED
SEARCH
KNOB
LED
MAIN VOL
WOOFER VOL
SOUND MODE
KEY
LED
KEY1,11 CD1LED
CD2LED
CD3LED
SEARCH R,F
KEY21,22
VOL
KEY2,3,21,32,41,42
KCMND
MSTAT
KCLK
MRDY
MPX
VOLDA,VOKCK
M
M
FMN-008
FMB-028-3
FM
AM
DIGITAL
OUT TX
SPINDLE
M
FMB-028-1
FMC-022/024-1
FMA-006 FMH-031-2 FMH-
031-1 FMB-028-5
FMH-031-3
FMB-028-2
CN315
IF
TAPE
CN316
CN306
CN305
PB/REC AMP
IC302
HEAD SW
IC301
SERIAL TO PARALLEL
PORT EXTENSION
IC303 SOLENOID DRIVE FOR RP MECHA
Q3314 Q3315
SOLENOID DRIVE FOR PB MECHA
Q3312 Q3313
CN301CN302
FW301CN303
CN333
M
DRIVER
DRIVER
R
L
R
L
PB MECHA HEAD
RP MECHA HEAD
SLCKEY
1 2
SLCKEY1 2
PHOTO A,B
SW302
SW306
IC331
SOLENOID
SW303
SW304
SW305
SW316
SOLENOID
IC332
SLCKEY2
PHB
SLCK
PHA
PB MECHA
PP MECHA
FMP-007-2
FMP-007-1
RDS
IC3 RDS

HABC DEFG
1
2
3
4
5
2-2
MX-GT91R
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one. SHEET 1/8
1/8
2/8
3/8
4/8
5/8
6/8
7/8
8/8
Power supply section
Standard schematic diagrams
SHEET 2/8
SHEET 2/8
SHEET 4/8
T001
F101
F001
F102
CN218
CN218
T002
D251
T001
D252
CN214
CN220
CN220
Q250
CN214
CN214
R250
F003
D254
C252
CN213
F001
T001
F101
F102
Q251
F101
F001
F102
F101
CN220
F101
F102
T001
CN220
CN214
CN220
CN214
CN250
CN208
F001
F101
F102
F102
T001
T001
CN208
T002
D251 D252
CN214
CN208
R1002
R1002
R1002
CN250
R1002
R1002 R1002
CN220
CN250
Q250
R250
D254
C252
CN213
Q251
CN209
CN250
CN219
C251
D255
C250
CN218
CN209
R253
RY3
D256
R1001
CN250
F001
CN218
CN218
F001
CN250
C253
CN209
C251
D255
C250 R253
RY3
D256
C253
QQT0320-002
T3.15AL
T2AL
T3.15AL
QGA7901F1-03
QGA7901F1-03
QQT0253-002
1SS133
QQT0320-002
1N4003
QJK015-071214
QGD2504C1-03Z
QGD2504C1-03Z
2SC2785
QJK015-071214
QJK015-071214
3.3k
T2AL
1SS133
0.0047/250
QGB2510K2-04
T4AL
QQT0320-003
T4AL
T4AL
2SC2235
6A-125V
5A-125V
6A-125V
T3.15AL
QGD2504C1-03Z
T4AL
T4AL
QQT0320-003
QGD2504C1-03Z
QJK015-071214
QGD2504C1-03Z
QJK015-071214
QGA7901C1-02
WJK0114-001A
T2AL
4A-250V
4A-250V
T3.15AL
QQT0320-003
QQT0320-001
WJK0114-001A
QQT0253-002
1SS133
1N4003
QJK015-071214
WJK0114-001A
0.33( 1/2W)
0.33( 1/2W)
0.33( 1/2W)
QGA7901C1-02
0.33( 1/2W)
0.33( 1/2W) 0.33( 1/2W)
QGD2504C1-03Z
QGA7901C1-02
2SC2785
3.3k
1SS133
0.0047/250
QGB2510K2-04
2SC2235
WJK0070-002A
QGA7901C1-02
QGA7901C1-04
470/16
QGA7901F1-03
QGA3901C1-02 3.3k
QSK0094-001
MTZJ6.2A
3.3M
QGA7901C1-02
T2AL
QGA3901C1-02
WJK0070-002A
2A-250V
QGA7901C1-02
0.0047
WJK0071-002A
470/16
3.3k
QSK0094-001
MTZJ6.2A
0.0047

ABCD E F G
1
2
3
4
5
2-3
MX-GT91R
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one. SHEET 2/8
DC regulation & audio output section
MAIN Signal
SHEET 5/8SHEET 3/8SHEET 1/8 SHEET 3/8 SHEET 3/8
CN205
CN215
CN204
CN201 CN217 RY1
RY2
CN207
Q737
R248
Q360
Q361
R360
R361
R364
R367
R366 R365 R368
R362
Q362
Q372
R389
R303
IC304
Q374
Q601
R249
C601 C602
R302
R306
R307
IC303 IC305
L201
EP201
R384 C373
R383 Q371
IC701
C731
D233
R246
R247
Q204
C216
R778
D223
R209
R202
D227
D218
C219
Q201
R707
C709
IC602
C706
R715
C705
R792
R786
Q240
C281
R242
D725
Q733
Q736
Q734
Q735
Q726
Q728
Q727
R736
R734
R733
R735
R728
R739
R740
C739
D703 D704
R775
R776
C721
C722
Q713
R761
C730
R762
R680
Q711
D650
R708
C710
R716
D622
Q702
R602
R681
R682
C683
Q680
D726
R281
R220
C606
C605
R675
R676
C621
C622
R608
C610
R284
C280
D280
R616
R640
R639
R607
C609
R615
Q790
R668
Q612
R797
R798
CN705
CN202
R619
CN203
R753
R754
R621
CN703
J81
R210
R741
R742
CN216
CN704
CN706
R363
D362
D360
D361
C362
C360
C361
C309
CN206
Q373
D619
C310 D314
R617
R620 D620 R623 Q602
R618
C308 D313
C307
C311
C312
D315
R385
D369
D370
C374
C372
D316
C623
C624
R216
C253
Q712
D234
R215
C222
C221
C220
C218
C217 R207
C223
C204
C214
C211
C212
C213
C203
C202
C201
C723
D221
R203
R204
R205
D217
C215
C205
D220
D219
C726
C707
R705
C713
C715
R774
R713
R721
R719 R717
D719
Q701
L701
C612
D723
D724
R777
R787
C734
R731
C732
C733
R730
R729
R727
C729
D728
R725
R726
R723
R724
R702
R701
C711 C712
R703
R766
R704
C703 C704
C735
R732
Q710
R217
R768
R706
R601
R650
R651
C652
C708
C653
C714
C716
R714
R769
R722
R720 R718
D720
L702
C651
C654
C611
R674
R218
R603R604
C603
C604
R606 C608
R794
C614C616
R283
R614
R654
R655
D790 R790
L602
C639
R666
R605 C607
C613C615
R613
R652
R653
L601
C790
R667
Q613
R793
R795
R796
Q791
Q792
QGB2510J1-14
QGB2510K2-14
QGA3901C1-07
QGB2510J1-09 QGB2510K2-10 QSK0109-001
QSK0109-001
QGB2510J1-10
KRA111M-T
1
2SD2395
KTC3199/GL
1.2K
1.2K
200 200 330
MTZJ5.1B
330
KTC3199/GL
10K
0.33
KIA7812API
KRC104M-T
1
0.022 0.022
2.2
KIA7808API KIA7809API
QQR0779-001Z
QNZ0136-001Z
2.7K 0.01
0.022
2A02M1
1
KTC3199/GL/-T
100/35
10K
1SS133
10K
4.7
1N4003S-T5
1N4003S-T5
0.01
KTA1023/0Y/-T
56K
4.7p
220P
10
220P
1K
10K
KTC3199/GL/-T
47/63
10K
1SS133
2SC3576-JVC-T
2SC3576-JVC-T
2SC3576-JVC-T
2SC3576-JVC-T
2SC2389S/SE/-T
KTC3199/GL/-T
4.7K
4.7K
4.7K
4.7K
10K
820
820
1k
1k
2SC2235/OY/-T
1K
0.022
1K
1M
KTC3200/GL/-T
1SS133
56K
4.7p
10
MTZJ9.1B
100
3.9K
4.7M
0.082
2SK301/PQ/-T
1SS133 220P
220P
1k
1k
10/35V
10/35V
56K
10P
47K
0.22/50
MTZ2.4JB
10
820
820
56K
10P
10
KTC3199/GL/-T
10k
KTA1267/YG/-T
20K
10
QGA2501C1-02
QGB2510J1-08
2.2K
QGB2510J1-04
0.22
0.22
10K
QGD2504C1-03Z
QNB0107-001
3K
QGB2510K2-10
QGD2504C1-03Z
QGD2504C1-03Z
330
MTZJ6.8C
MTZJ11C
22/50
47/16
0.01
STBY
QGB2510J1-10
KRA104M-T
1SS133
KTA1268/GL/-T
10/50
MTZJ13B-T2
220
2.2K 1SS133
10K
KTA1268/GL/-T
220
10/50
MTZJ8.2B
STBY
STBY
10/50
MTZJ9.1B
5.6K
MTZ10JC MTZJ11C
22/50
22/50
STBY
10/50
10/50
47K
3300/25
KTA1268/GL/-T
2A02M
47K
4.7/50
4.7/50
22/50
22/50
10K
22/50
0.082
0.082
0.082
0.1
0.1
0.1
100/10
MTZJ5.1B
7.5K
22K
100K
1N4003S-T5
MTZJ9.1B-T2
MTZJ33C
10/25
47/63
820
0.047
0.047 10
10
10K
5.6K 1K
1SS133
KTA1268/GL/-T
0.45
47/50
MTZJ36A-T2
MTZJ36A-T2
10K
10K
0.0022
4.7
0.1
0.1
KTA1268/GL/-T
10K
100K
100K
47/16
1SS133
82K
100K
MTZJ15C-T2 MTZJ15C-T2
47
47
0.1 0.1
56k
33k
56k
470p 470p
0.0022
4.7
2SA965/OY/-T
27K
100K
820
100
4.7 4.7
0.0022
47/63
0.1
0.0470.047
10
2.2K
10K
5.6K 1K
1SS133
KTA1268/GL/-T
0.45
0.0022
0.1
47/50
10
27K
56k
56k
220p
220p
1.2K 47/63
10k
0.047
0.047
15K
10
0.22
0.22
1SS133 10k
0.45
0.1
33k
1.2K 47/63
0.047
0.047
10
0.22
0.22
0.45
47/25
10k
KRC102M-T
100K
10k
6.8K
KTC3199/GL/-T
KTC3203/OY/-T
5.6V
MAINL
MAINL
MAINR
SWL
PRT
9V
8V
SWFB
SURR.CTRL
PRT

HABC DEFG
1
2
3
4
5
2-4
MX-GT91R
CD signal
TAPE P.B. signal
MAIN signal
TUNER signal
Main section
SHEET 3/8
SHEET 7/8
SHEET 6/8
SHEET 4/8 SHEET 4/8
SHEET 2/8SHEET 2/8SHEET 2/8 SHEET 8/8
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
C501 C502
C1228
R411
R412
D411
D412
C415
C432
C433
R505
R518
B172
R512
Q402
R403
R404
Q999
R995
CN315
R1233
CN870
R523
CN871
C514
R431
R432
R443
C998
C475
C403
R506
C1229
R473
R999
R475
C531
C503
C510
R998
C509
R434
C999
D434
CN661
C534
R1209
R1208
R1206
R513
R530
R1205
R1207
R997
C1202
R996
C528
C1201
FW714
R531
L546
R777
R776
C995
Q572
R994
Q571
Q562
R581 R580
C577
C576
Q573
R575
C575
R572
R886
R433
R1203
C994
D593
C888
R1202
C887
Q586
Q585
C889
R444
R586
C589
C586 C587
R585
JA566
CN504
CN505
L567
R593
C593
C594
D587
Q590
C598
C1214
L570
L571
L568
R485
R486
C481
C482
P2
C485
C486
R488
Q483
P1
L573
R491
R492
R494
L569
L572
CN211
R599
R562
J411
C886
C402
C401 R401
R402
R415
R416
Q411
R417
R418
R419
R420
Q413
R421
D413
D414
C416
J426
C426
D426 C427
R426
R469
IC436
C439
C441 C443 C445
C446
C444
C442 C440
C449
C450
C460
C458
C454
C456
C453 C455
C457 C459
C461 C462
R438 R439
R440
R441
R442
C436
C437
R436
R437
R413
R414
C411
C412
C556
C438
IC466
C467 C473
C471 C466
C472
C474
C469
C470
IC501
R502
R466
R472 C468
R501
R503
R519
R511
IC526
R1233
R504
R532
R517
R508
Q401
R407
C404
R563
R524
R564
R410
R498
C489
B150
B151
R435
D431
R507
C505
C507
C447
R537
R474
R510
C476
C504
C1227
R541
C527
C508
C532
D501
D502
C526
IC502
C1211
R529
D432
C996 C997
C530
R534
R528
C578
R526
R536
CN11
R887 R888
R557
R558
IC571
R406
R583
R582
R405
R579
D571
D572
R576
R577
D592
C535
R571
C571
D585
C585
C588
Q482
R587
Q481
R588
CN212
C1205
C1206
C1207
L566
Q589
D586
D588
C592
C596
C1209
C597
C595
C1208
R495
C487
IC481
R597
C483
C484
R598
R595
R596
R487
R489
R490
R594
R496
R493
B311 B312
C488
R560
C1212
C1213
B313
C1210
B108
B154
R471
C413
C414
Q412
R468
R470
R467
Q557
Q556
C448
4.7/50 4.7/50
100/6.3
10k
10k
1SS133-T2
1SS133-T2
2200P
0.001
0.01
22K
100k
220k
4.7k
4.7k
KRA102M-T
33K
QGF1205C1-10
QGF1205C1-17
8.2k
QGF1205C1-17
30k
30k
100k
100P
1/50
470/10
22K
100/10
6.8K
10K
100
0.22
4.7/50
10K
QRJ146J-4.7X
1SS133-T2
100P
MTZJ5.1B-T2
QGF1016F3-19
47/16
1k
1k
1k
220k
5.6k
1k
1k
10K
0.1MY
10K
0.1
220/10
QUM156-18DGZ4
15k
QQR0779-001
100/6.3
2SC2785/FE/-T
10K
2SC2785/FE/-T
2SC3576-JVC-T
220k
47/16
47/16
2SC2785/FE/-T
47k
100p
47k
33K
220
1k
470P
1SS133-T2
0.022
1k
0.01
KTC3199/GL
KTC3199/GL
0.01
100k
2.2M
0.015
0.018 33P
47K
QNN0017-002
QQL0779-001
100K
470/10V
MTZJ6.8C-T2
KRC102M
22/50
0.01
QQL0779-001
QQL0779-001
QQL0779-001
10/35
10/35 KRA102M-T
QQR0779-001
4.7k
4.7k
10k
QQL0779-001
QQL0779-001
QGB2510K2-09/11
1K
10k
QNN0215-001
0.022
220P
220P 1K
1K
200
200 2SC3576-JVC-T
2SC3576-JVC-T 2.2k
2.2k
10k
10k
KRA102M-T
22k
1SS133-T2
1SS133-T2
GP1FA550TZ
0.022 MTZJ5.1B-T2 10/25
56
5.6k
TDA7439
10/25
10/35 2.2/50
10/25
10/25 2.2/50 10/35 10/25
2.2/50
2.2/50 0.018
0.022
0.1 0.1
0.1
0.1 0.022 0.018
0.0056
0.0056
2.7k 5.6k
5.6k
2.7k
10k
100/10 10/25
10k
1k
68k
68k
220p
220p
10/25
0.01
BA3837
2.2/50
10/25
10/25
4.7/50
10/25
10/25
0.068
0.27
BA15218
3.3k
200
1k
22/25
3.3k
30k
100k
100k
BA15218
100
100k
22k
56K
270k
2SC3576-JVC-T
2SC3576-JVC-T
2.7k
47/16
22k
1.8K
22k
22k
100
100/10
10k
MTZJ3.9B-T2
30k
0.27
0.015
10/35
100
51K
0.0068
0.0082
100/10
22k
0.027
47/16
1SS133-T2
100/10
BA15218
0.01
22k
MTZJ3.9B-T2
10P 10P
0.1
1.8K
1/50
100
QGF1205F1-09/13
4.7K
12K
BA15218
100
100
1SS133-T2
1SS133-T2
100k
100k 1SS133-T2
100/10
270
2.2/50
1SS133-T2
1/50
680P
2SC3576-JVC-T
100K
2SC3576-JVC-T
22
QGB2510K2-08/10
0.01MY
0.1MY
0.01MY
QQR0779-001Z
KTA1271/0Y/-T
MTZJ6.8C-T2
MTZ3.9B-T2
0.01
0.01
1200P
100/10
1000/6.3
18P
100
100/10
BA15218
1K
10K
180
180
6.8K
6.8K
560
1k
10k
1/50
30K
0.01
0.01 0.01
22k
20k
5.6k
20k
2SC2785/FE/-T 2SC2785/FE/-T
10/35
MSI
AUXR
VOLDA
MSI
PBL
PBR
PBMUTE
D.OUT
POUT
RELAY
AUXL
CDR
MSI2
AUXMUTE
RECR
CDL
RECL
RECR
RECL
SWFB
SWFB
PRT
KCMND
MSTAT
MRDY
KCLK
VC3RESET
TUR
TUL
CK
MPX
RDS_CLK
RDSDA
D.OUT
-30V
SURR.CTRL
ECO
RECR
AUXL
CDL
PBL
TUL
TUR PBR CDR AUXR
PBMUTE
VOLCK
-30V
RELAY
KARAOKE
SMUTE
MSI2
BASS1
MSTAT
BASS2
KCMND
MPX
RECL
TUCE
VC3RESET
KCLK CK
SPISIG
MRDY
RDS_CLK
ECO
RDSDA/KARAOKE
BASS1
BASS2
SPISIG
POUT
VOLDA
VOLCK
PRT
C993 103P

ABCD E F G
1
2
3
4
5
2-5
MX-GT91R
SHEET 4/8
FL & systm control section
SHEET 3/8SHEET 3/8SHEET 1/8
SHEET 5/8SHEET 5/8SHEET 5/8
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
SHEET 7/8
C889
Q907
Q875
B186
Q908
CN860
R844 C838
R151
X801
R819
R820
R801
R902
RA801
C803
D804
L803
R888
FL801
RA802
D805
R838
R839
Q816
R886
R889
R887
Q843
R885
R843
C837
R848
R849
L813
R961
R968
S963
D962
S964 L815
C857
IC951
L812
R970
CN880
L872
CN316
D812
Q879
CN911
Q809 Q810 Q811
C1046
C836
Q812 Q813 Q858
Q890
R884
IC830
CN861
IC902 C1039
R1036
Q1022
Q1021
C1040
Q860
C1037 C1041
C1038
FW915
R1035
R1034
R1031
R1033
Q1023
R897
R1032
C1036
R1038
R1039
R1037
C1045
D860
R911
Q877
FW230
C815
R824
R823
C874
C875
L801
L805
L806
L802
C817
IC810
Q817
S996
S995
S997
R878
C873
R894
R877
Q905
Q906
R905 R906
R861
C872
R860
R851
R850
R998
R994
S998
S999
R854
R855
R895
R893
C805
C809
B185
C808
C940
D816
R921
D807
R825
R873
C233
D806
D815
C820
C804
D801
R871
D803
R814
R865
R858
C821
R836
R837
IC811
R831
R881
R827
R818
R965
R993
R842
R810 R811 R812 R813
R857
D964
R866
R845
R868
R874
R880
R841
R840
Q961
R962
R817
R234
C835
R879
R233
R869
R867
R963
R826
R859 R870 R872
R891
R856
R890
R964
R992
R991
Q878
C823
R1041
C1043
D1021
R1040
R1044
R864
R1045
R862
R1043
D831
C1034
C1035
C1044
C1042
R1042
R912
R846
D832
C832
C831
R847
R822
C862 IC812
C801
R807
R808
R821
R816
R815 R996 R995 R997
C816
R876
D802
R829
R828 R882 R883
R832
R835
R834
R833
4.7/50
KRC102M-T
KRA102M-T
QGF1205F1-17
1K
0.001
220
QAX0283-001Z
1K
1K
330
10K
QRB169J-104
470/6.3
1SS133-T2
QLF0074-001
QQL29BJ-100Z
220
QRB169J-104
1SS133-T2
1K
1K
BU2092/F
220
220
220
KRA102M-T
220
220
100/10
330
1K
QQR0779-001Z
100
10K
L-115XSRD-D-T
QQR0779-001Z
22/50
GPIU271X
QQR0779-001Z
100
QGF1210G1-24
QQR0779-001Z
QGF1210G1-09
1SS133-T2
QGD2503F1-07
1/50
10/25
1K
KIA7042AP-T
BU9253AS
0.01U
3.9K
KRA111M-T
0.01
KTC3199/GL
0.01 3300P
4700P
QUM027-18Z4Z4
33K
10K
20K
8.2K
KRA111M-T
20K
100P
4.7K
10K
15K
2.2/50
1SS133-T2
1K
KRA102M-T
22/50
1K
1K
0.1MY
BA3835S
0.1MY
QQL29BJ-100Z
QQL29BJ-100Z
QQL29BJ-100Z
QQL231K-220Y
22/50
MN101C35DEA
100K
0.22/50
10K
KRC104M-T
KRC104M-T
100K 100K
10K
0.22/50
680k
1K
1K
1K
1K
1K
1K
1K
KRC102M-T
0.001
33P
33P
2.2/50
MTZ6.2JC
1N4003S-T5
100K
100K
0.1MY
1SS119-02-T2
MTZ6.2JC
1.5MY
470/6.3
1N4003S-T5
100K
1SS119-02-T2
5.6K
100K
100K
2SD1991A/RS/-T
0.01
100K
100K
100K
10K
10K
10K
10K
1.2K
10K
10K 10K 10K 10K
100K
1S133-T2
100K
1K
100K
100K
100K
10K
10K
KRA102M-T
10K
10K
1000p
100K
100K
100K
5.6K
100K
100K
100K
100K
100K
100K
100K
3.9K
2K
2SD1991A/RS/-T
2SD1991A/RS/-T
2K
2SD1991A/RS/-T
2SD1991A/RS/-T
KRC102M-T
2SD1991A/RS/-T
2SD1991A/RS/-T
2SD1991A/RS/-T
2SD1991A/RS/-T
QGF1205F1-17
KRA111M-T
0.33MY
20K
0.47MY
MTZ5.1B-T2
2.7K
5.6K
10K
1K
22
20K
MTZJ5.1B-T2
0.1MY
100/10
0.01u
22/25
220
10K
QUM153-10DGZ4
1K
MTZJ5.1B-T2
0.01 0.01
1K
10K
4.7/50
0.01MY
10K
10K
2SD1991A/RS/-T
10K
56K
56K 2.7K 2.2K 1.5K
47/16
10K
1SS133-T2
10K
10K 10K 10K
100K 100K
100K
100K
VSS
PHOTOB
SURROUND
SPIDTI
POUT1
CD3LED
VC3RESET
HP
VOL-DATA
VOLDTA
MSI
MPX
INH
INH
SMUTE
TUCE
CD2LED
CD1LED
HP
TULED
BASSLED
CDLED
MSI
SMLED
AUXLED
BASSVOL-
TUCE
BASSVOL+
PHOTOB
SMODE-
SMODE+
EXTCE
SMUTE
PHOTOA
TAPELED
MPX
SEARCH-LED
VOL+
VOL-
ECON
RDS_CLK
CD1LED
CD2LED
14G
PBMUTE
PHOTOA
VOL-
VOLCK
SURROUND
RESET
AUXLED
REMIN
RELAY
VDD
BASSVOL+
SMLED
CD3LED
BASSVOL-
RELAY
SOUNDMODE-
TAPELED
CDLED
SOUNMODE+
SPI_B
SPI_A
BASSLED
TULED
AUXMUTE
INH
VOL+
ECHO1
15G
16G
DATA
CK
SPI-IN
R_SEARCH
RDS-DATA/KARAUKE
RDS-CLK
SLLCE
ECHO2
ECON
RELAY
17G
PRT
F_SEARCH
VOL-CK
INH
AUXMUTE
KCMND
MSTAT
KCLK
MRDY
PRT
VC3RESET
BASS2
RST
BASS2
BASS1
RDS_DATA
PBMUTE
BASS1
SPI_IN
REMIN
SPI_A
SPI_B
EXTCE
VOLCK
FVOLDA
DATA
G13
1G
P1
P2 P3 P4 P5 P6
P7
P8 P9
P10
P11
SLCKEY1
P12 P13 P14
P15 P16
SLCCE
P17 P18
3G
SLCKEY2
P19
DATA
P20
CK
P21
P22
P1
SLCKEY2
4G
5G
KCMND
6G
7G
8G
9G
10G
MSTAT
G1
11G
12G
SLCKEY1
P10
P8
17G
16G
G1
G2
P2
1G
KEY4
G3
4G
5G
6G
7G
8G
9G
10G
11G
12G G13 G14
P3
P4 P5
P6 P7
8P
P9 10P P11 P12
P13
P14
P15
P16
G17
15G
14G
13G
G15
3G
2G
SLCKEY2
SLCKEY1
13G
G2
KEY3
KEY4
KEY3
KEY2 KEY1
2G
CK
KEY2
G3
KCLK
KEY1
1G
2G
3G
13G
14G
15G
16G
17G
P8
P10
G2
G1
G4
SPIDTI
MRDY
G5
ECHO1
ECHO2
G14
G15
G16 G17
G6
G7
G8
G9
G10 G11
G12
P17
P18
P19
P21
P22
G16
C825
0.001

HABC DEFG
1
2
3
4
5
2-6
MX-GT91R
Front section
SHEET 5/8
SHEET 4/8SHEET 4/8SHEET 4/8
SHEET 2/8
TW800
FW915
CN870
C901
Q956
Q960
Q953
Q918
Q954
Q941
Q940
C1070 C935
FW901
C1021
C902
Q919
JS901
D1003
S901
S902
Q920
D1022
S931
S932
S933
S951
R930
S935
C962 C963
JS962
S936
S937
S939
J1001
TW801
S938
L1002
FW713
S952
JS956
C960
JS960
C961
S950
S942
S944
S943
S945
S949
S948
S947
S946
S915
S917
S916 R1068
R1021
R1022
J1022
J1021
Q1061
IC901
C1068
R1069
C1066
D1061
R1062
R1063
D945
D942
D944 D943
R955
R908
L1003
D904 R904
D905
Q901
R929
R954
R951
D954
R938
R941
R932R933R935
R940
R939
D940
R931
D941
R937
R953
R952
R936
L1001
C1002
C1001
C1004 C1006 C1005
R916
D953 D957D956
C956
C957
R956
D961D960 R960
R942
R944
R943 R946 R947 R948 R949
R945 R950
D919
R917
D918 D920
R919
R920
C1022
C1023
VR901
R1071
R1070
C1065
C1067
R1067
R1066
C1063
R1061
C1062
C1061
R1065
R1064
C1064
R918
QUB220-15DMHP
QUM027-18Z4Z4
0.01
222P 0.01
QUM027-13DGZ4
102P
0.01
QSW0911-001
MTZJ2.4B-T2
MTZJ2.4B-T2
10K
0.01 0.01
QSW0862-001
QNS0183-001
QUB220-15DMHP
QQL231K-470Y
QUB023-33DGZ4
QSW0912-001
0.01
QSW0911-001
0.01
20K
4.7k
4.7k
QNS0184-001
QNS0184-001
2SD2144S/VW/-T
NJM4580L
0.22/50
1K
330P
1SS133-T2
12K
390
KTA1267/YG/-T
KTA1267/YG/-T
KTA1267/YG/-T
KRC102M-T
KTA1267/YG/-T KTA1267/YG/-T KTA1267/YG/-T
1.5K
KRC102M-T
5.6K
QQR0779-001Z
68
L-115XSRD-D-T
KRC102M-T2
KRC102M-T
2K
68
2K
L-914SRD-T
2.2K
68
2.7K3.9K5.6K
68
2.7K
L-914SRD-T
2.2K
L-914SRD-T
1.5K
68
1.2K
1.2K
QQL231K-470Y
3900p
3900p
1000p 1000p 1000p
1K
L-914SRD-T L-115XSRD-D-T
0.01
0.01
68
L-115XSRD-D-T 68
3.9K
3.9k
10K 2.7K 1.5k 1.2k
2.2k
5.6K 1k
L-115XSRD-D-T
1K
L-115XSRD-D-T
L-115XSRD-D-T
200 200
1000p1000p
QVQ0299-B54
4.7K
560
150P
2.2/50
56
4.7M
4.7/50
10K
100/10
220/10
100
1.5k
150P
200

ABCD E F G
1
2
3
4
5
2-7
MX-GT91R
CD signal
SHEET 6/8
CD serbo section
SHEET 3/8
R852
R802
R809
R808
C821 C822
R806
R805
R804
R803
C617
R851
C611
C619
C624
IC251
R631
C631
TP3
Q631
R666
R632
R635
R634
C632
R853
R277
CN601
C633
R807
C606
C603
C604
IC852IC851
R605
R602
R601
C602C601
R636
R854
W601
CN801
R831
R832
R276
IC651
R661
R667
C661
C651
X651
C652
R609
R275
C653
C676
R682
IC652
IC652
C695
R706 R707
C696
R705
R691
R708
R692
R701
R702
C699
R709
R710
C693
C694
Q632
C618
C691
R274
CN651
R615
R656
R703
C692
R704
C622
R686
R687
R688
R293
R641
Q291
R292
R291
C291
R280
R642 R284
R253
R257
R255
R256
R873
C641
C642
R281
C859
C860
C253
R670
R813
R812
R876
R875
R874
R872
R871
TP6
TP5
C816
R617
C815
TP4
R606
C607
X251
C252
R294
C251
CN652
R614
C608
R856 L851
R607
R855
C852
TP2
Q842
R842
C855
TP1
D667
C254
CN855
R887
R886
R885
R884
R883
R882
R881
R880
R610
R608
R690
C620
M851
L853
M852
L854
CN854
R861
R862
R863
R866
R865
R864
CN851
P001
VR001
C001
P011
SW1
SW2
SW3
SW6
SW5
SW4
CN804
CN805
C658
IC801
C812 C814
R801 C801 C811
C813
C802
R624
C621
C677
C853
C614 C615
C612
C623
C610
R621
R604
C854
C605 R603
R262
D851
R616
R651
C657 C655
R652 R653
R654
R263
R665
C656
R662 R663
R664
C663
C664 C665
C680 C679
R620 R619 R618
C673
R683
C669
R261
R657
R258
R658
R254 R264
R288
R685
R659
R811
R689
R655
R260
C668 R265
TP10
IC601
R289
R669
R290
TP7 TP8 TP9
R625 R623
R695R696
C667
C613
R888
R613 R611
R622
R633
R889 R890 R891 R892 R893
R649
R894 R895
R684
R668
C666
C672 R672
C671
C616
1K
3.9K
1.2K
27K
1/16 220/10
24K
13K
220K
2.2K
330P
1K
NI
3.3K
100/6.3
UPD780024AGKB25
2.2
10/16
2SA1037AK/RS/-X
220
10
120
12
1/16
1K
1K
QGF1016F3-15
0.022
1.2K
56P
0.022
0.022
LB1641LB1641
NI
270K
220K
0.0010.001
10
1K
QGA2001C1-06
150
10K
1K
MN662748RPM
39k
4.7
470P
12P
QAX0413-001Z
12P
NI
1K
0.1/25
0.1/25
1K
BA15218F-XE
BA15218F-XE
0.047
2K 6.8K
10/16
5.6K
10K
100
10K
820
820
220/10
100
220
0.0068
0.0068
NI
NI
390P
1K
QGF1016F3-19
NI
1K
10K
390P
10K
0.047
NI
NI
NI
NI
150k
2SB1357/EF/-T
10K
1.2K
47/10
1K
390k 1K
1K
1K
1K
1K
22K
0.022
2200p
1K
1/16
1/16
0.1/25
100
NI
1.5K
22K
22K
22K
22K
22K
NI
NI
2.2/50
62k
NI
QAX0360-001Z
10P
1K
10P
NI
22k
820p
010
0
NI
10/16
NI
4.7K
0.1/25
NI
47/10
QGB2012K2-10
1K
1K
1K
1K
1K
1K
1K
1K
NI
0
10K
47p
MSN-5D257A
10
MSN-5D257A
10
QGB2016K1-07 1K
1K
1K
1K
1K
1K
NI
HQMV7102-015
2KB
1
QGA2001F1-06
E406783-001
E406784+001
ESB110-005
0.1/25
LA6541-X
390P 390P
2.7K 0.0068
390P
390P
0.012
0
1
0.1/25
0.01
0.027 0.0047
1/50
1/16
0.027
560K
270K
0.01
150P 120k
22K
MTZJ5.6B
NI
1K
220/10 0.1/25
1K 1K
100
22K
270
0.1/25
68K 120K
330
0.022 0.022
0.15
0.1/25 100/6.3
560K
15k
15k
220/10
1M
220/10
22K
1K
1K
1K
1K
22K
1K
68k
1K
10k
10K
1K
2.2K
0.047 22K
AN22000A
1K
5.6K
1K
08.2k
24K
HDU-100
24K
1
0.1
22K
2.2K
22K
8.2k
NI
22K 22K 22K 22K 22K
NI
22K 22K
560k
1.5M
NI
0.33U 2.7K
NI
0.01
/RFDET
OFT
RFENV
BDO
TRD
LDON
B+D
FE
GCTRL
FBAL
TBAL
A+C
B+D
F
E
F+
T+
T-
F-
FM-
SM+
SM-
FM+
/P.ON
KICK
TVD
TRV
P.ON
ECM
ECS
FOD
CAM5
TE
RSEL
OUTR
SBCK
OUTL
TRV
TVD
ECM
ECS
KICK
TRD
FOD
RSEL
RFENV
FE
TBAL
FBAL
OFT
/RFDET
BDO
LDON
ARF
OUTL
SQCK
SUBQ
KCMND
KCLK
MCS
MSTAT
SBCK
RMDOWN
RMUP
LMDOWN
LMUP
LOUT
ROUT
CAM0
TE
MCS
KCLK
KCMND
MSTAT
MRDY
CAM1
CAM2
CAM3
CAM4
CAM6
CAM7
ARF
WVEL
VDET
A+C
F
E
SUBC
SUBC
VDET
WVEL
LOUT
ROUT
CAM0
CAM1
CAM2
CAM3
CAM4
CAM5
CAM6
CAM7
OUTR
LM-
LM+
RM-
RM+
1SSW
2SSW
3SSW
3MSW
2MSW
1MSW
T+
SM- T- SM+ FM+ FM- F+
F-
MDATA
P.ON
1SSW 2SSW 3SSW 3MSW 2MSW 1MSW
MCLK
DMUTE
STAT /RST MLD
SQCK
MLD
MDATA
MCLK
MRDY
LMUP
/P.ON
/RST
DMUTE
RMUP LMDOWN RMDOWN LM- LM+ RM- RM+
STAT
SUBQ

HABC DEFG
1
2
3
4
5
2-8
MX-GT91R
TAPE P.B. signal
SHEET 3/8 SHEET 4/8
SHEET 7/8
Head amplifier section
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.

ABCD E F G
1
2
3
4
5
2-9
MX-GT91R
Tuner section
FM/ TUNER signal
SHEET 8/8
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
SHEET 3/8
FROM CN11 OF FMC-022
TU1
Q4
C52
CF3
R5
CF1
C10
Q2
C51
IC3
C74
C12
C11
R15
R17
C14
C15
C13
R16
C75
L70
L3
C16
R29
R41
R21
R28
C54
C22
C72
R27
C25
C6
CF2
C55
C56
CN1
C45 R38
C44
C50
C42
R39
C43
R37
C21
C36
R31
C73
C48
C30
C7
R32
C23
C76
C24
C26
C27
C18
D1
R30
T1
C71
C70
D2
D3
L2
D4
C53
C57
C20
Q3
Q5
Q1
L1
C59
C58
C49
J1
C17
R33
R3
R4
R2 C2
R23
R25
IC2
R14
X1
R24
R26
R71
D11
R72
IC1
R73
R10
C46
C47
R34C34
C32
C31
C40
C35
R36
R12
C39
C38
R35 C37
R18
C41
C33
R19
R20 R22
C19
X70
R70
C4
C1
R11
R13
R40
C3
R6
C9
R60 C60
QAU0160-001
DTA114YKA-X
0.27
QAX0610-001Z
56
QAX0420-001
12P
2SC2412K/R/-X
1/50
LC72723
0.1
LC72136N
0.047
0.1
3.3K
68( 1/4W) FR
100/10
12P
12P
4.7K
10/50
100
4.7
12P
10K
3.3K
5.6K
10K
0.047
150P
560P
10K
LA1838
100/10
0.001
QAX0458-001Z
33P
10P
QGF1205F1-13
10/16 39K
10/16
22/16
0.0018
39K
0.0018
10K
0.022
1/50
1K
0.1
0.0022
100/10
0.001
1K
150P
330P
150P
0.01
0.01
0.47/50
1SS133-T2
1.2K
QQR0793-001
22P
22P
1SS133-T2
1SS133-T2
33
1SS133-T2
22/16
0.001
1000P
QQR1094-001
2SC2412K/R/-X
DTA114YKA-X
0.001
0.047 470P
QNB0014-001
0.0039
330
220K
330
330 0.01
1.8K
330
100K
QAX0402-001
10K
2.2K
1K
1SS133-T2
1K 1K
2.2K
0.022
1/50
47
0.022
0.047
22/16
10/16
0.047
3.3K
4.7k
1/50 0.22/50
5.6k
1/50
1K
10/16
0.047
1K 1K 4.7K
0.047
QAX0263-001Z
10K
0.01
0.022
4.7k
10K
2SC2814/4-5/-X
39k
10/16
12
0.001
0
5.6V
ROUT
LOUT
RDDA RDCL
STEREO CE
D.GND
9V CK DATA GND