Kenwood DV70 Service Manual
70%
MINI HiFi COMPONENT SYSTEM
EX.BASS
VOLUME
CONTROL
DISC SELECTOR DISC SKIP 0OPEN/CLOSE
STANDBY
/TIMER
DISPLAY/DEMO
REVERSE MODE
VIDEO/AUX
POWER
DVD/CD
TAPE A
PHONES MIC MIC LEVEL
TAPE B STOP
VIRTUAL SURROUND
TUNER
BAND
ON/STANDBY
LISTEN MODE
DVD
VCD
CD
S
E
LE
C
T
EN
TE
R
TUNING MODE
EQ MODE
/EX.BASS
SMART
MENU
M
U
L
T
I
C
O
N
T
R
O
L
/
P
.
C
A
L
L
REC/ARM
4
¢
DISC 1 DISC 2 DISC 3
23 23 7
PUSH
OPEN
PUSH
OPEN
TAPE
A PLAY PLAY/REC TAPE B
RXD-A850DV/DV50/DV70
SERVICE MANUAL
(XD-A850DV~DV70)**
Button(DISC)
(K29-8031-08)
Button(ON/STANDBY)
(K29-8038-08)
Window *
(B10-)
Door deck(L)
(A52-0947-08)
Front panel *
(A60-)
© 2001-9 PRINTED IN KOREA
B51-5751-00 (K/K) 3186
Button(OPEN/CLOSE)
(K29-8037-08)
Door tray
(A22-1864-08))
Button(MENU)
(K29-8039-08)
Knob(MAIN)
(K29-8040-08)
Button(REC/ARM)
(K29-8036-08)
Volume ring
(B01-2575-08)
Door deck(R)
(A52-0948-08)
M and M2 types are available for MIC circuit.
**Refer to page 2 if you want to know system
configuration.
In compliance with Federal Regulations, following are reproduction of labels on, or inside the product relating to laser
product safety.
* Refer to parts list on page 28 .
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
RXD-A850DV/DV50/DV70
FM indoor antenna (1)
(T90-0881-08)
Loop antenna (1)
(T90-0882-08)
Remote control unit (1)
(A70-1533-08): ....KYX
(A70-1534-08): .....TE
(A70-1535-08): ....MM2
Batteries (R6/AA) (2)
*AC plug adaptor (1)
(E03-0115-05)
* Use to adapt the plug on the
power cord to the shape of
the wall outlet.
(Accessory only for regions
where use is necessary.)
/
Video cord (1)
(E30-7235-08)
The marking is located on the rear panel and says that
the component uses laser beams that have been classified as Class 1. It means that the unit is utilizing laser
beams that are of a weaker class. There is no danger of
hazardous radiation outside the unit.
The marking of products using lasers
(Except for some areas)
Operation to reset
The microcomputer may fall into malfunction (impossibility to
operate, erroneous display, etc.) when the power cord is unplugged while power is ON or due to an external factor. In this
case, execute the following procedure to reset the microcomputer and return it to normal condition.
÷ Please note that resetting the microcomputer clears the
contents stored in and returns and to condition when it left
the factory.
Set the POWE key to ON. Then press the VIDEO/
down.
AUX key while holding the TUNING MODE key
CONTENTS / ACCESSORIES / CAUTIONS
Contents
CONTENTS / ACCESSORIES / CAUTIONS............. 2
EXTERNAL VIEW .......................................................3
ADJUSTMENT ............................................................4
PC BOARD ................................................................ 5
Accessories
SCHEMATIC DIAGRAM .......................................... 13
EXPLODED VIEW ....................................................26
PARTS LIST..............................................................28
SPECIFICATIONS ....................................................36
System configurations
SYSTEM MAIN UNIT DESTINATION SPEAKER
XD-A850DV RXD-A805DV K LS-N50V-H
XD-DV50 RXD-DV50 MXET LS-N50V
XD-DV50(M2) RXD-DV50(M2) M2 LS-N50V
XD-DV60 RXD-DV70 MX LS-N70V
XD-DV60(M2) RXD-DV70(M2) M2 LS-N70V
XD-DV70 RXD-DV70 MX LS-N90V
Cautions
2
RXD-A850DV/DV50/DV70
LR
L
R
L
R
VIDEO/AUX
IN
OUT
FRONT
SPEAKERS
(6Ω)
ON
OFF
SURROUND
SPEAKERS (8 –16Ω)
SURROUND
S-VIDEO
Cr
Cb
Y
FM 75Ω
AM
GND
ANTENNA
SUPER
WOOFER
PRE OUT
COMPONENT
VIDEO OUTPUT
VIDEO
OUTPUT
DIGITAL
OUT
OPTICAL
+–
+–
AC 110120V
AC 220240V
EXTERNAL VIEW
Phono jack *
(E63-)
Phono jack *
(E63-)
Lock terminal board
(E70-0158-08)
Slide switch
(S62-0109-08)
Lock terminal board
(E70-0152-08)
Metallic cabinet
(A52-0949-08)
Tuner ass'y *
(W02-)
DIN socket
(E63-1243-08)
AC power cord bushing
(J42-0350-08)
Phono jack *
(E63-)
Slide switch
(S62-0108-08)
AC power cord *
(E30-)
Digital out
(W02-2911-08)
* Refer to parts list on page 28 .
3
RXD-A850DV/DV50/DV70
LR
L
R
L
R
VIDEO/AUX
IN
OUT
FRONT
SPEAKERS
(6Ω)
ON
OFF
SURROUND
SPEAKERS (8 –16Ω)
SURROUND
S-VIDEO
Cr
Cb
Y
FM 75Ω
AM
GND
ANTENNA
SUPER
WOOFER
PRE OUT
COMPONENT
VIDEO OUTPUT
VIDEO
OUTPUT
DIGITAL
OUT
OPTICAL
+–
+–
AC 110120V
AC 220240V
Oscilloscope
FM SG
AC voltmeter
Frequency counter
AC voltmeter
AG
{
(A)
(B)
CASSETTE DECK SECTION
INPUT OUTPUT CASSETE TAPE ALIGNMENT
ALIGN FOR
SETTINGS SETTINGS DECK SETTINGS POINT
0dB = 400mV
1. Cassette mechanism section (REC/PB head adjustment)
Power OFF REC/PB head, Demagnetize the REC/PB head by head
Demagnetization demagnetization, erase head. eraser.Clean the REC/PB head,erase
and cleaning cleaning play capstan,pinch head capstan and pinch roller with a
roller cotton awab immersed in alcohol.
Adjust the output to maximum and
azimuth MTT-114 Azimuth adjust the azimuth adjustment screw
REC/PB Head TCC-153 adjustment for the Lissajours waveform pattern of
azimuth 10KHz,-10dB screw the oscilloscope to become close to a
45' straight line.
2.PC board adjustment
MTT-111 Adjust the tape speed so that 3kHz is
[1] Tape speed TCC-100 AUX OUTPUT PLAY VR901 obtained at the center of the tape.
3KHz, -4dB (Frequency of 3KHZ +/- 40Hz)
[2]
PLAY BACK
MTT-130 AUX OUTPUT PLAY - Playback output to 400mV +/- 50mV
LEVEL
CN902 Pin1 and Pin2(GND)
[3] REC BIAS REC/PB AUX OUTPUT REC T901 Ensure that the Frequency Counter
Frequency TEST TAPE Adjust T901 to obtain this of 105KHz
AC-224 +/- 5KHz
Record 400Hz and 10.0kHz alternately,
REC/PB and adjust the bias current adjustment
1.TP1(+) and TP2(GND)
REC BIAS TEST TAPE VR903(L-CH) Adjust VR903(L-CH) to obtain this of 3.5mV
[4] Current AC-224 AUX OUTPUT REC 2.TP3(+) and TP4(GND)
VR904(R-CH) Adjust VR904(R-CH) to obtain this of 3.5mV
AUX IN: 50mV REC * potentiometer for the playback levels to
400Hz become the same. (Spec.: +/-5dB)
AMPLIFIER SECTION
INPUT OUTPUT AMPLIFIER ALIGNMENT
NO ITEM
SETTING SETTING SETTING POINT
ALIGN FOR
1.R234 Side Pin1 and Pin3
IDLE NO SIGNAL
AUX VR201
Adjust VR201 to obtain this of +8 mV
[1]
CURRENT VR(Min.)
FUNCTION VR202
1.R301 Side Pin1 and Pin3
Adjust VR202 to obtain this of +8 mV
(Spec.: +8mV +/-3mV)
# Idle Current: 20mA
ITEM
PLAY
[1]
[2] AUX OUTPUT
--
ADJUSTMENT
NO
Measurement Equipment Connections
4
A BDFHJCEG I
JW7
JW10
JW11
JW5
JW4
JW15
C003
JW9
C002
M001
BD01
BD02
JW16
JW17
JW14
D001
P1001
P1002
CONTROL BOARD
P001
P1004
P028
P026
P027
JW8
JW1
JW3
JW6
C005
R003
R002
R004
C004
JW2
R001
C006
JW13
JW12
1
1
1
110
1
10
14
EB
8
2
12 1 8
DVD-LOGO
SENSOR BOARD
IC002
D002
IC001
Q001
P002
P1003
L3
L2
L6
L5
C10
C13
C15
L1
J705
C701
R702
R701
L4
C702
J704
R11
C9
CDL2
CDL1
K701
2
1
3
C704
C706
J708
R703
F702
F07
F08
J702
R706
J707
J701
F701
F05 F06
R708
CN705
IC701
CN706
D1
D2
R707
D706
D708
Q1
D3 D4
JK1
JK2
Q2
D701
D705
D703
D704
IC701(CP706)
D707
D709
Q702
CN703
CP704
P706
P709
S701
DIGITAL OUT
OPTICAL
S VIDEO
CVBS
VIDEO
OUTPUT
AC INPUT
STANDBY-VIDEO BOARD
CN702
VOLTAGE
SELECTOR
R10
C22
C21
C19
C8
R12
J1
C17
F703
R700
T701
J700
C705
R709
J706
12
151
1
2
15
14
7
BE
BE
BE
14
14
14
JK3
PC BOARD (Component side view)
1
2
3
4
5
6
7
65
Refer to the schematic diagram for the value of resistors and capacitors.
KMOQSLNPRT
R483
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
B
E
E
B
E
B
E
B
E
B
E
B
E
BE
B
E
BE
B
E
BE
B
E
B
E
B
E
B
E
B
E
B
E
B
B
B
E
E
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
BE
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
BE
B
E
J338
J335
C405
C401
C403
J336
C407
J383
J254
J332
J330
J327
J334
J333
J329
J255
J328
C435
R433
R405
C422
R434
R419
R438
R437
J323
J322
J325
C421
J326
R407
C420
J342
J341
J343
C406
C416
J340
C429
C409
C410
R424
C430
J318
C252
J303
C424
J360
R412
R248
R252
R239
R280
R484
R470
R474
C268
C267
R281
R269
R261
R238
R233
R286
R293
C263
R306
J376
R237
R242
J364
J398
J294
C208
J367
J293
C207
J292
J297
R234
J385
R320
C261
J298
J238
J288
J302
R301
J290
J289
J102
J291
J365
R291
R298
J258
J240
J280
J279
J278
J281
L202
R207
J339
R340
J261
R231
R201
R202
R348
R349
R232
R247
R236
R417
R339
R222
R299
R342
J263
VR202
J324
J287
J232
J260
R297
J313
J299
J259
J286
R321
J282
J283
R480
R491
J285
R421
J321
R406
J393
R435
R410
R487
C408
R220
R489
R345
R486
J384
C404
R343
R347
J372
C253
J374
J391
J373
J386
J361
J371
J369
J368
J366
J362
J354
J353
J351
J352
J382
J359
R358
C258
R371
R370
R355
R356
R372
R373
R353
R361
C260
R360
R230
R229
R357
R359
C203
J370
J235
J269
J252
C622
J224
J256
J257
J243
J244
J388
J247
J250
J246
J245
J248
C615
C638
J600
C626
J251
J221
J226
R609
H3
C632
R624
R604
J212
J220
C601
F611
J222
J219
C608
J210
J200
J389
J380
J202
J204
J201
F610
J205
J218
C607
C604
C603
J217
J216
J215
J214
J213
J211
J206
R602
J381
J234
J228
J225
J227
C633
J223
C639
R623
J229
R606
C640
IOG
IOG
C634
J241
J242
C617
C618
C621
H006
R626
C635
J231
J230
H4
H5
J249
C623
J233
J379
B
B
E
E
C630
R610
R608
C631
J103
C606
C602
C605
C627
R607
R625
R605
J209
J207
J208
R620
F604
F603
R627
C614
J253
CP613
IC601
Q601
Q603
Q604
CN602
Q605
CN603
CP607
CN604
CN618
CP611
CN605
IC603
Q606
CN2
D604
Q607
D611
D610
D609
D620
D602
D601
D606
IC602
CN614
J356
J355
J270
J357
J266
J268
J267
VR201
R226
R225
J265
R223
R224
J273
J274
J276
J277
J264
J262
R214
R215
C202
R208
R209
R290
R216
C206
C204
R212
R311
R308
R213
R312
J363
R309
R210
R221
R217
R218
R211
R219
R313
R310
R307
J377
R402
C402
R254
R420
R411
R414
R256
C213
R418
R258
C432
R415
R374
R490
R366
R329
R244
J348
K201
J275
J350
J349
R250
J203
C262
R249
J358
R270
R259
R265
R267
J101
C218
J320
J331
J394
J312
J390
J319
J317
C431
R245
J314
J301
J300
J346
J345
R283
R289
D218
D212
D211
R227
C205
R262
R263
R303
R351
R350
R264
R271
R272
R416
J311
J347
J315
R485
J309
R401
J308
R464
J310
J307
C468
C465
C223
J399
C436
R463
R273
C219
R268
R457
R466
C473
J306
R465
R469
R467
C467
C472
R323
R326
R325
R468
C471
R367
J295
J392
R369
L201
R204
R203
R205
R206
R328
R318
R315
R317
R316
R292
R285
C251
C250
C269
R295
R368
R322
R319
J296
C233
C232
C257
R331
R324
R327
J304
J284
R459
R458
R460
C466
R364
C439
J395
C440
R451
C460
C437
R472
C478
C256
R477
C473
C438
C441
J400
R461
R462
C226
R296
R284
R274
R275
C222
R278
R200
C264
C224
R276
C221
R304
C230
R305
R228
C214
C216
C211
J375
C210
R413
R354
R352
C259
J396
J387
R409
C408
R425
R346
R488
R403
R404
C434
J237
C449
C212
C433
C450
R217
C228
C225
J239
C220
C227
J236
C231
C254
R314
J271
J397
J272
C201
C255
C266
C265
C229
C209
C215
C428
C411
C413
C412
C414
C423
C425
C426
C427
C415
C453
CP404
Q402
IC401
CP402
D233
Q255
CP352
CP203
Q244
Q252
Q246
Q247
Q210
CN606
CN616
Q212
D206
Q257
Q256
Q214
CP350
D225
D224
D222
CP351
B
B
B
E
E
Q207
B
E
E
B
E
B
E
Q206
B
E
Q234
D223
B
B
B
B
E
E
E
E
Q230
Q228
Q259
Q258
B
E
Q211
Q253
Q254
CP405
Q209
Q205
D207
Q213
D210
D201
D203
D204
D217
D213
D208
Q208
Q231
Q233
D234
Q241
Q240
Q242
D232
IC406
D229
Q239
D2
D1
Q406
CP401
Q407
Q408
Q401
Q222
Q251
JK402
JK401
Q227
Q232
D219
D228
Q229
Q235
Q226
Q224
Q225
Q249
D209
D226
D221
Q217
Q220
Q218
Q250
Q216
Q221
Q223
Q237
Q219
CP202
Q243
Q215
D235
CP204
CP205
S201
D227
JK203JK204
Q201
Q203
D205
Q202
Q204
D202
Q236
Q238
CP403
Q404
Q403
IC403
IC402
Q410
Q409
Q245
1
218
19
MAIN BOARD
30
16
115
14
815
4
8
17
17
1
16
2
85
14
15
11
1
1
10
1
6
1
113
41
12
5
1
12
12
1
1
10
15
1
11
5
1
11
1
5
5
1
1
13
1
1
1
1
33
6
1
32 2
8
4
5
1
E
B
POWER AMP BOARD
LRLR
FRONT
SPEAKERS
SURROUND
SPEAKERS
VIDEO/AUX
SUPPER
WOOFER
PRE OUT
IN OUT
PC BOARD (Component side view)
1
2
3
4
5
6
7
Refer to the schematic diagram for the value of resistors and capacitors.
7
8
U VXZABADWYAAAC
R971
R954
R964
R977
R913
R914
R860
R909
R944
R927
R943
J930
J916
R942
R941
R917
J947
R916
R990
R987
R947
R993
R978
R980
R986
R362
EN801
R363
R375
G3
R335
J957
C238
C234
C953
C963
R926
R935
R925
R930
R981
R982
R921
R902
TP3
J931
R901
R932
R933
R934
R928
R929
R931
R907
R906
R908
C912
R903
R904
R994
TP2
TP4
R984
R979
R989
J875
J866
J937
J935
J932
R956
VR901
R955
R967
R821
R820
R819
R611
J896
R612
R866
R814
C831
R831
R833
R834
R864
R865
R846
R847
R870
R837
R838
R40
J901
J834
J833
J873
R806
R849
R848
R803
R42
R802
R804
R856
R959
J960
J912
J913
J801
J802
R857
R858
R855
R840
R841
R843
R844
J849
J848
R867
H2
H3
R835
J861
J864
J862
J863
J877
J876
R966
R973
R974
R862
R836
R900
R905
C910
C911
J934
C914
R910
R43
J911
R45
R60
R61
R350
R351
C962
C248
C830
C1
G2
G1
C3
C961
C816
R939
R995
R918
R44
R845
J808
R952
J971
J949
J854
R946
R948
R809
R812
R51
J822
J827
J826
J824
J828
J823
J829
J821
J820
J830
J832
J831
J836
J841
J835
J811
J810
J905
J906
J904
J903
J812
J813
C827
J815
J814
J817
J816
J818
J819
J840
J837
J838
J839
C806
J910
C804
C825
X802
C819
J908
J800
J803
J907
R53
R52
R46
J859
J855
J856
J858
C823
J883
J882
J857
J881
J958
X801
J852
J850
J825
J851
R938
G907
R960
R961
R958
R959
R962
R965
R976
R945
R992
R816
R808
R815
R861
R863
R818 R817
R807
C814
C942
C938
L902
L901
C936
C901
C956
C958
C918
C960
J946
J945
C954
C902
C904
C903
C905
C931
C932
C933
C934
C924
C950
C923
C926
C246
C913
C939
C815
J965
C937
C916
C818
R850R842
J961
C805
C821
C828
C829
C824
C820
C817
C822
C802
C801
C803
C921
C249
C242
C239
C964
R940
R972
R936
TP6
TP5
C906
C908
R919
R983
R920
R338
R337
R336
R331
R332
R330
R859
R872
R823
R824
R825
R827R826
R828 R829 R830
R333
R334
VR201
C240
C241
C237
C235
H8
C236
J929
G904
R923
C920
C957
R985
J944
C952
R915
C915
J878
T901
R963
R969
R953
R951
R968
R950
R970
R813
J894
J898
J893
J891
J807
J888
J887
J964
J969
J872
J860
J869
J870
J871
J867
J865
J967
R49
R949
R957R991
R975
R937
C947
C946
VR904
VR903
C945
C943
C917
C930
C929
C928
C922
C925
C927
C907
J928
C940
J972
J941
C944
J853
J936
J926
J922
J914
TP1
J954
J948
J973
J953
J939
C959
J952
J956
J951
J950
J915
J942
J943
C919
J955
J938
C951
J940
C935
J927
J933
C909
J917
J921
J924
J918
J920
J923
J919
J925
R32
R31
R30
R29
R28
R27
R26
R25
R24
R23
R22
R21
R20
R19
R18
R17
R16
R15
R14
R13
R12
R11
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
53
52
EB
R822
J892
J842
J890
J889
J968
J886
C826
J804
J805
J806
J809
J897
J895
J847
J884
R832
R39
J902
J974
J962
J966
J970
R810
R868
J846
J844
J843
J845
R811
R41
R999
J880
J900
J899
J879
R38
R998
R37
R997
R36
R996
R34
R58
R805
EB
Q925
DECK BOARD
Q917
EB
Q918
EB
Q926
EB
Q914
EB
Q912
EB
Q909
EB
Q908
EB
Q901
EB
Q911
D902
CP907
EB
Q910
EB
Q906
EEB
B
Q905
Q902
EB
Q907
EB
Q945
EB
Q916
EBEBEB
EB
Q924
CN811
D809
D810
D811
SW822
SW825
SW827
SW826
CP811
D819
CN805 CN801
CN808
SW819
SW820
D830
SW821
CP807
G4
G5
D802
D612
FL801
IC801
CN806CN803CN907
D805
SW823
SW824
CP809
Q922
Q923
E
E
B
B
Q913
CN902
CN901
CN908
CP906
CP810
CP808
D808
SW805
SW804
SW803
SW802
SW801
D814
D813
D812
Q812
RM801
EB
Q807
EB
Q815
EB
Q810
D803
D804
D818
EB
Q808
CP804
EB
Q3
EB
Q809
CN809
Q927
EB
Q811
D906
D904
D905
EB
Q806
E
B
Q814
D817
D901
D903
EB
Q903
EB
Q813
EB
Q803
D230
D231
CN209
SW810
SW811
SW812
SW813
SW815
SW814
SW816
SW817
SW818
CN201
D240
JK202
JK201
CN807
ENCODER
PHONES
MIC
MIC AMP SECTION
FRONT BOARD
D241
D815
EB
Q920
EB
Q904
EB
Q801
EB
Q921
EB
Q919
G906
112
24 13
8
1
1
3
1
15
1
13
1
2
12
1
2
1
30
80
51
100
81
31
50
1
OUT
GND
+B
1
9
1
4
1
7
1
3
1
2
1
9
1
1
19
2
18
1
8
1
9
1
1
18
16 9
8
16 9
8
16 9
8
16 9
1
15
1122
17
1
2
16
IC901
14
85
1
5
1
1
4
8
5
IC902
IC201
IC802
IC803
IC805
IC804
PC BOARD (Component side view)
1
2
3
4
5
6
7
109
Refer to the schematic diagram for the value of resistors and capacitors.
CV29
RV29
CV28
CV16
RV17
CV17
CV65
CV35
CV34
RV35
RV9
CV8
CV12
CV23
RV23
CV22
R82
R81
R62A
R84
R85
R86
R87
R88
R89
R90
CV5
CV4
RV11
RV28
RV16
RV3
RV4
RV8
R59
R45
R68
BD10B
BD1
C63
R1
RS24
RS22
RS21
C44
C43
C42
C41
C34
C35
C19C20
C33R9R10
C40
R2
J10
C39
J5
C1
C4
R11
R19
C7
R73
R91
C88C
C88SL
C88FR
C2
C3
R111A
R111
J2
J3
RS4
C9
C8
C45
C14
R33
C36
R34
RV2
RV13
RV5
RV31
RV25
RV19
C37
R35
R15
C38
C22
R117
R71
RM8
R36
C32
C46
RM7
C47
R14
C49
R18
RM20
RM21
C5
C6
CV58
CV27
CV57
C28
C26
RM23
C48
R72
RM22
C23
C24
R43
C27
R37
R115
CV61
RV7
RV34
RV33
RV32
RV10
RV6
CV40
RV22
RV20
RV21
RV14
RV27
RV26
RV15
D7
D5
D4
D6
BE
EB
Q3FL
EB
Q4FL
EB
Q3FR
EB
Q4FR
EB
Q3C
EB
Q4C
EB
Q3W
EB
Q4W
E
B
Q35L
EB
Q45L
E
B
Q35R
EB
Q45R
QV3
BE
QV5
BE
QV2
BE
QV6
BE
QV1
BE
QV4
D2
D8FL
D8W
D8C
D3
D8FR
D8SR
D8SL
Q2
Q1
QV7
DVD BOARD
CN1
CP3
CN2
D1
CV15
CV25
CV9
CV18
CV19
CV37
C51C17
C18
C21
C88FL
CV48
CV45
C88SR
C88W
CV39
CV13
CV31
C83FLC85FL
CV21
C85FR
C83FR
C85C C83C
C83SL
W83W
C85SLCM2
CM1
C85SR
C83SR
CV81SR
C85W
C81FL
C81FR
C81C
C81W
C81SL
CV53
CV52
CV42
CV51
CV56
CV24
C31
C60
CV54
CV55
C25
CV41
CV7
CV3
C13
C16
C15
LS4
LS3
LS6
CV1
CV11
CV6
R42
RV30
CV26
RV39
CV14
RV18
CV63
RV38
CV2
RV12
RV55
R114
R66
R96
R26
R23
R57
R56
RA9
RA8 RA7 RA6
RA16 RA15 RA14
RA13 RA12 RA11 RA10
RA5RA3RA2RA1
RS16
RS18
R64
R65
R29
R30
BD11
RV44
RV43
R67
R70
R62
R61
BD10
RV54
RV53
RV52
RV51
RV50
R105
R85FL
C82FL
R82FL
R85FR
R82FR
R103
R102
R92
R93
R95
R94
R17A
RA73 RA72
R49
C29
R48
R50
C30
R58
RS1
RS5
RS7
RS3
RS6
R16A
R63
RS2
R13
R12
RM9 R113
R112
R46
R47
RA71
RA70
RA80
R17
CV50
CV46
CV43
C82FR
C82C
R82C
CV64
R25
R24 R32
C11
R31
C12
R28
J1
R16
R27
R21
R20
R22
R80
R79
R78
R77
R76
R75
R74
RS23
R41 C10
RV40
CV20
RV24
RV37
CV10
RV1
RV42
RV36
CV32
CV62
C84FL
C86FL
C84FL
C86FR
C84FR
R106
R108
LM1
R110
R87SR
R81SR
R87FL
R81FL
C84FR
R107
R109
R104
R85C
R85W
C84C
C86C
R84C
R84W
C86W
C86SL
R84SL
C86SR
R84SR
C84W
R85SL
R85SR
C84SL
S84SR
R87FR
R81FR
C87FL
R83FL
R86FL
C87FR
R86FR
R83FR
C87C
R83C
R86C
C87W
R83W
R86W
C87SL
R83SL
R86SL
C87SR
R83SR
R86SR
R38
CV49
CV47
R8
R7
R6R5R4
R3
RA4
R54
RS90
R55
R51
R53
R52
R118
R119
R83
R44
X1
CV44
R39
R40
R87C
R81C
R82W
C82W
C82SL
R82SL
R82SR
C82SR
R87W
R81W
R87SL
R81SL
RV41
QV8
QV10
QV11
QV13
QV12
QV9
QV14
CN3CP2
CN4
CP1
85
41
119
218
IC4
41
8
5
41
85
IC81
IC82
41
33
1
32
2
1
15
2
14
1
4
1
14
85
IC83
169
81
157
24 1
25 48
214
214
151
115
208
104
105
156
52
1
53
IC10
8
14
7
1
IC5
IC1
IC3
169
81
IC9
16
28 54
27 1
17
14
85
14 8
9
81
IC8
IC2
IC7
IC6
EB
EB
EB
EBEB
EBEB
EB
BE
BE
AE AG AI AK AMAF AH AJ AL AN
PC BOARD (Component side view)
1
2
3
4
5
6
7
Refer to the schematic diagram for the value of resistors and capacitors.
11
12
A BDFHJCEG I
A
B
1
2
3
1
2
3
L(+)
GND
R(+)
6
5
4
3
2
1
8
7
6
5
4
3
2
1
L(+)
GND
L(-)
R(+)
GND
R(-)
GND
OSC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
A
B
+5V
PLAY SW-2
PHOTO-2
MOTOR+
SOL-2
SOL-1
RVS-REC
PHOTO-1
PACK-2
PLAY SW-1
COM
PACK-1
FWD-REC
CR02-2
CR02-1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
A
B
+5V
PLAY SW-2
PHOTO-2
MOTOR+
SOL-2
SOL-1
RVS-REC
PHOTO-1
PACK-2
PLAY SW-1
COM
PACK-1
FWD-REC
CR02-2
CR02-1
24
232221
201918
1716151413
1
2
3
4
5
678
9
10
11
12
A/B ALC
680P
680P
C933
220P
C932
C931
220P
C934
560
R934
47u16
C929
+
150
R928
180K
R932
12K
R933
0.01
C930
1u50
C928
+
R931 10K
330K
R930
4.7u50
C925
+
180K
R929
220P
C923
1.8K
R925
22u16
C922
+
4.7u50
+
C920
4.7K
R921
56K
R920
R923 2.2K
C921 1000P
47u16
C919
+
R919 1M
180K
C903
C904
C902
680P
1u50
R903
12K
C906
47u16
R901
560
R902
150
C908
220P
680P
220P
C905
0.01
+
C907
+
R904
3.3u50
C910
+
4.7u50
C911
+
R907
180K
R906
1.8K
R908
330K
22u16
C912
220P
C913
+
4.7u50
+
C915
R915 2.2K
C916 1000P
4.7K
R916
56K
R917
22K
R909
100u10
C914
+
220u16
C909
+
R914 47K
R913
10K
1
2
3
4.7K
R910
1000P
C918
R905 15K
C917 1800P
47P
C961
C901 220P
L901 10MHz
C927 1800P
47P
C962
C936 220P
L902 10MHz
R935 15K
4.7K
R926
C926
1000P
2
3
4
1
5
6
8
7
C950 100P
22K
22u16
C963
+
7.5K
R981 R947
7.5K22u16
C960
+
C924 100P
R978 22K
47K 47K
4.7u50
+
C957
100K
R983
1K
R987
4.7K
R990
+
100K
C954
4.7u50
R984
1K
R989
4.7K
47u16
+
C953
R986
2.2K
2.2K
R979
R985
R993R980
47u16
C952
+
470P
C956
470P
C958
22K
R992
4
100K(B)
VR903
220P
C939
8.2K
R937
R938
8.2K 220P
C938VR904
100K(B)
2.2K
R940
2.2K
R939
C937
0.022
R941
27K
2.2K
R927
R942
10K
10K
R944
2.2K
R943
5
VR904
VR903
T901
T901
0.01
C943
0.022
C942
4700P
C940
0.015
C947
5.6K
R971
0.01
C946
C945
0.015
R973
5.6K
47u16
C944
+
10
R975
R974 10
R946
10
3.3K
R977
1.8K
R976
10u16
C951
+
10K
R945
6
R948
1K
7
22K(B)
VR901
R991
15K
R957
4.7K
8.2K
8.2K
R949
R968
R951
47K
R952 68K
R970 8.2K
R950 18K
R953 39K
R969 8.2K
R965 8.2K
R954 8.2K
R956 39K
R966 8.2K
8.2K
R955 18K
47K
R964
R958
1K
R959
10K
R961
10K
R960
4.7K
R962
1K
R963
10K
68K
R900
R967
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
L-OUT
L-IN
AGND
AGND
R-IN
R-OUT
GND
GND
+12V
+12V
+12V
+12V
+5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
A/B
DUBB
RECMUTE
PBMUTE
REC
BIAS
BEAT
A-PHOTO
A-SOL
MOTOR
B-SOL
B-PHOTO
DKSW1
DKSW2
+5V
1
2
4
3
7
6
5
9
8
14
12
13
11
10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
A/B
DUBB
RECMUTE
PBMUTE
REC
BIAS
BEAT
A-PHOTO
A-SOL
MOTOR
B-SOL
B-PHOTO
DKSW1
DKSW2
+5V
10
R994
R995
10
R972 1
IC901
10K
R936
22u16
C935
+
3.3U50
C959
+
R918 220
1
2
3
4
DVD RX
DVD TX
DVD RST
DVD LOGO
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
807978777675747372717069686766656463626160
59
1
2
3
4
5
678
9
10
11
12
131415
1617181920
21
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
S06
S07
S08
S09
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
G2G1NC
PDET
DVD RX
RDSCL
RDSDA
REM
PROTECTNCNC
DVD TX
DVDRST
DVDPWR
ENCDR A
ENCDR BNCNCNCTUNED
PLL DO
S05
S04
S03
S02
S01
NC
NC
NC
VDD
NC
NC
G11
G10
G9
G8
G7
G6
G5
G4
G3
2
1
2
3
1
3
2
1
31
2
100
99
98
97
96
94
95
93
92
7
6
20
21
R864
R865
R868 10K
10K
R849
10K
R848
R846
R847
1K
1K
C816 1000P
R39 1K
R805 10K
R823 1K R824 1.2K
R832 1.2KR831 1K10K
R813
C818
0.022
10K
R812
R819 47
R820 47
R822 47
R821 47
220u6.3
C826
+
2.2u50
+
C831
10K
R880
1
2
3
4
5
6
7
8
ST
DATA
CLK
Q1
Q2
Q3
Q4
VSS
16
15
14
13
12
11
10
9
VDD
ENABLE
Q5
Q6
Q7
Q8
Q'S
QS
Q3 Q8
QS
Q'S
7
Q4
VSS
8
10
9
DATA ENABLE
Q5
Q6
Q7
Q1
5
Q2
6
3
CLK
4
12
11
14
13
VDD
1
ST
2
16
15
100u10
+
C827
0.022
C820
C829 100P
C830 100P
C828 100P
4
1
3
2
7
5
6
9
9
7
5
6
3
4
2
1
11
10
10
11
330
R872
R859
270
150
R862
OUT+B
GND
47u16
C814
+
0.022
C815
1K
R808
150
R863
R861
220
26
27
36
35
4
9
8
8
1K
R996
10K
R34
+5V
+5V
+5.6V
+5.6V
+5.6V
+5.6V
+5V
+5V
+5V
+12V
+5V
+12V
+5V
+5.6V
+5.6V
+5.6V
+5.6V
+B
+5V
+B
+12V
+5V
+12V
+12V
+12V
+12V
+12V
+5V
+B
+5V
+B
+12V
+12V
+B
+B
IC902
B
+B
R807
100
10K
3.3K
87
88
86
85
83
84
82
81
788079
767775
737470
71
72
6967686465
666263
60
59
61
MODEL
R850
DV70/50
DV90NO10K
MODEL CODE
NO
JUMP
J961
10K
X 1.2K
REGION CODE
Y
REGION
R844
VALUE
JUMP
K/P
E/E2/T 6.8K
3.9K
M/M2 12K
TUNER
REGION CODE
REGION
1.2K
22K
12K
3.9K
6.8K
R842
VALUE
JUMP
DVD
REGION1
REGION2
REGION3
REGION4
REGION5
REGION6
+5V
R982
Rch
Lch
ERASE
Lch
Rch
MOTOR
CN903 CN901TAPE-A
CN904 CN902TAPE-B
CN905
CP906
Q904
Q903
Q902
D901
PLAYBACK/REC
EQ AMPLIFIER
IC902(1/2)
IC902(2/2)
Q905
Q901
Q927
Q906
Q907
Q908
Q909
Q910
Q911
Q914
D903
Q912
Q913
BIAS CURRENT
ADJ. (Rch)
ADJ. (Lch)
BIAS CURRENT
REC BIAS
FREQUENCY
Q918
Q917
Q925
BIAS
OSC
Q926
Q945
Q916
BIAS
CONTROL
TAPE
SPEED
Q921
Q919
D904
Q922
D905
Q924
B-SOL
CONTROL
Q920
Q923
D906
CONTROL
A-SOL
CONTROL
MOTOR
CN908
CP907
CN907
D902
CN801
CP811
CN811
u-COM
CP807
CN807
EN801
SW810
POWER DEMO
SW811
SW820
EX-BASS
SW819
LISTEN
MODE
D803
Q814
D818
D819
Q815
D815
Q803
Q813
Q807
D809
D810
Q808
DVD
VIDEOCD
Q812
D812
D808
EX BASS
Q806
STBY ON STBY OFF
DVD LOGO
D804
A
B
AMPLIFIER
OUTPUT
ENCODER VR
IC901 : KIA6289N
IC902 : BA4558
Q901,902,904-911
: KTD1302
Q903,913,916,922-924,
945 : DTC114YSA
Q912,914 : KTA1266(Y)
Q917,925,926
: KTC3205Y
Q918 : KTC3198Y
Q919-921 : KTA1273Y
Q927 : DTA114YSA
D901-904,906
: 1N4148
D905 : 1N4004
DTC114YSA:Q812 B30-2626-08:D808
B30-2627-08:D812
B LINE
B LINE
GND LINE
SIGNAL LINE
RECORDING LINE
DECK MECHA
IC901
DECK BOARD
IC801
IC802
IC803
RM801
FRONT BOARD
-26.0V
-26.0V
5.0V
0V
4.0V
2.0V
2.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
-24.0V
-24.0V
-12.0V
-9.0V
-14.0V
-24.0V
-15.0V
-18.0V
-20.0V
-29.0V
-20.0V
-30.0V
-18.0V
-24.0V
0V
-24.0V
-30.0V
-17.0V
-23.0V
0V
-30.0V
-30.0V
-30.0V
-30.0V
-30.0V
-30.0V
-30.0V
5.0V
-26.0V
-26.0V
-26.0V
-26.0V
-26.0V
-26.0V
-26.0V
-26.0V
-26.0V
0V
0V
0V
0V
4.0V
4.0V
0V
0V
0V
0V
0V
0V
0V
4.6V
5.0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
5.0V
5.0V
4.6V
5.0V
5.6V
5.6V
0V
0V
5.6V
5.6V
11.0V
5.6V
0V
0V
1.2V
1.3V
0V
0V
0V
2.0V
0V
0V
0V
1.0V
0V
1.2V
2.0V
1.5V
9.0V
0V
1.0V
0V
1.0V0V
0V5.0V
0V
0V
7.0V
0V
8.0V
0V
0V
0V
0V
5.0V
0V
0V6.0V
0V
0V
0V
0.6V
0V
0V
0.6V
0V
0V
0.6V
0.6V
0V
0.2V
0V
0V
0V
0.2V
0V
0V
0V 0.6V
0V
0V
0V0.6V
0V
11.0V
12.0V
12.0V
0.6V
0V
0V
4.0V 4.0V
3.4V
6.0V
0V
0V
0V 0V
0V
0V
0V
0V
0V 12.0V
12.0V
0V 12.0V
12.0V
12.0V
12.0V
0V
0V
0V
12.0V
0V
12.0V
0V
0V
0V
12.0V
0V
0V
0V
0V
12.0V12.0V
0V
0.6V0V
AO-3
U-3
1
2
3
4
5
CAUTION: For continued safety, replace safety
critical components only with manufacturer's recommended parts (refer to parts list). indicates
safety critical components. For continued protection against risk of fire, replace only with same type
and rating fuse(s). To reduce the risk of electric
shock, leakage-current or resistance measurements shall be carried out (exposed parts are
acceptably insulated from the supply circuit) before
the appliance is returned to the customer.
6
The DC voltage is an actual reading measured with
a high impedance type voltmeter with no signal
input. The measurement value may vary depending on the measuring instruments used or on the
product.
7
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