JVC KD-S891R Administrator Guide

SCHEMATIC DIAGRAMS
CD RECEIVER
No.49876SCH
2003/7
COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.
KD-S891R
Area suffix
E ----------- Continental Europe
EX --------------- Central Europe
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
2-1
2-2
2-5 to 7
CD-ROM No.SML200307

KD-S891R
2-4
!Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
Safety precaution
!Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.

KD-S891R
2-1
AB CD E F G
1
2
3
4
5
POSITION SET
SWITCH
LOAD&FEED
MOTOR
SPINDLE
MOTOR
SW1, SW2
PICK UP
PSW
SW1, SW2
CN501
IC501
CD
DRIVER
IC541
DSP
IC521
RF AMP
IC581
CD L.P.F.
VF1,VF2,
VT1,VT2,
MD,LD
TRO,FOO
DMO,FMO BUS0,BUS1
BUS2,BUS3
BUCK,CCE
RST
SEL
TEB
RFDC
TE,RF,FE
RFGC
RFRP
AOUTL
AOUTR
CJ601
IC602
REMOCON
S601 to S618
KEY MATRIX
KEY0
KEY1
KEY2
REMOCON
IC601
LCD
DRIVER
LCD1
CN701
TU1
FM/AM
TUNER
IC71
RDS
DETECTER
IC701
CPU
IC161
E.VOL
IC301
POWER
AMP
IC901
REGULATOR
SPK
BATTERY
EACH BLOCK
TU.L
TU.R
OUTFL
OUTFR
OUTRL
OUTRR
Rear L
Rear R
CD.L
CD.R
RDSCL
RDSDA
J321
LINE OUT
Front LEFT+
Front LEFT-
Front RIGHT+
Front RIGHT-
Rear LEFT+
Rear LEFT-
Rear RIGHT+
Rear RIGHT-
COM1
COM2
COM3
S1 to S50
LCDCL
LCDDA
LCDCE
VOLDA
VOLCL
J1
ANT
SW1,SW2,PSW
LM0,LM1
FEED+
FEED-
SPINDLE+
SPINDLE-
VF1,VF2,
VT1,VT2,
LD,MD,
TRACKING+
TRACKING-
FOCUS+
FOCUS-
SPINDLE+
SPINDLE-
FEED+
FEED-
TRACKING+
TRACKING-
FOCUS+
FOCUS-
Block diagram
CN901
Front L
Front R
IC401
MP3
&
INT. SRAM
IC481
DAC
MP3DIN
MP3DOUT
MP3REQ
MP3STBY
MP3CLK
MP3RESET
DAC-CDTI
DAC-CCLK
DAC-CSN
DAC-PDN
IC31
PLL
AMVT
FMVT
FM/AM OSC
PLLDA
PLLDI
PLLCL
PLLCE
SEEK/STOP
SD/ST
MONO
SM

KD-S891R
2-2
KD-S891R
HAB C DE FG
1
2
3
4
5
Front signal
Tuner signal
CD signal Rear signal
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
Standard schematic diagrams
Main amplifier section
To CD servo control section
To LCD & Key control section CJ601
C312
IC801
IC901
R738
R808
Q91
C711
R739
R740
C311
C165
R734
Q5
L1
IC161
R7
C851
R5
R6
CN701
R735
R736
IC701
R743
C177
R744
R745
R807
C178
C179
IC31
Q31
C170
C180
R803
R804
R805
R806
C50
R810
R809
R801
C801
SI
SCK
C91
R81
R91
SO
Q1
D331
Q241
D321
C52
R979
R978
IC702
R332
R322
R331
R321
R765
L701
R182
C36
C35
C46
R181
C161
C162
D851
C171
C163
D240
TU1
D852
C852
R746
C47
R851
R708
J801
R171
R161
R759
R742
Q81
R760
IC71
C72
C76
C71
C75
C74
B1
Q2
VSS
D781
R720
R719
VDD
R758
VPP
C73
C77
R34
C32
C49
X1
C706
R37
R36
R741
R243
R242
RESET
TD
C243
C901
R244
C301
C241
D243
C173
D998
RD
R35
R756
X701
X702
C316
D997
D996
Q84
D995
R53
C172
Q881
R54
C55
C891
R891
R892
C54
Q782
C968
C966
C967
C965
C964
Q6
R977
C963
C962
C961
IC301
R714
R56
R57
R58
R710
R881
D902
R882
C881
C302
R248
C192C191
C710
Q7
C168
C167
C194
C81
C175
C707
R8
R711
Q977
R712
R162
C242
D994
D993
D992
D991
R43
R713
R715
R44
R716
R163
R747
R748
R749
C33
R705
R59
C713
R311
R312
R301
R302
C78
C322
C323
C324
C325
D901
R901
R352
R342
R341
R351
R709
J1
D782
R172
C193
C169
R173
Q891
C37
R32
R706
C34
C176
C174
C166
C164
D341
R707
F1
R704
D351
R737
IC771
D241
R757
R245
R241
C712
D971
J321
C771
R732
C920
C31
C914
R1
C43
R3
C1
L901
D1
D2
C40
C4
D701
R4
C906
C2
C716
C313
R42
R38
R751
C902
C314
C303 C304
R802
R92
C92
C82
R82
Q8
Q3
Q52
C910
C905
R980
Q10
C48
C781
Q321 Q341
R165
R164
R323
R333
C321
X31
R31
C903
D703
R750
C39
C919
R9
R39
C41
R51
C5
D892
C319
R83 R93
D972
C907
Q9
R74
L702 C715
X71
R783
R753
R721 R722
R73
R723
R72
R71
D84
C8
R246
R247
C94
D242
Q331
R726 R728
R972
C701 C702
R33
C703
C704
C83
C85
C95
C718
R52
R55
C53 Q51
CN901
D891
R703 R702
R976
C3
C913
R2
C908 C909
C317
D705 D707
R313 R314R304
D244
R303
D709 D702 D704 D706 D708 D712
C38
Q53
R971
C315
C717
C911
C244
D713
D784
C912
C782
C320
R763
C6
C318
R904
R903
R902
D4
C784
Q781
R84
R725
R40
R353 R343
R729
R10
Q784
R41
R174 R175
C42
C45
Q976
C904
C44
Q351
C51
C915
R752
C708
C705
R701
C709 D710
R771
C971
D5
C341
C84
R754
R755
R772
C714
C9
100/16
0.33
HD74HC126FP-X
AN80T07
4.7k
330
2SD601A/R/-X
220/10
4.7k
4.7k
0.33
0.18
2.2k
2SB709A/R/-X
4.7u
TEA6320T-X
4.7k
10/16
47k
47k
VMC0334-001
2.2k
2.2k
UPD784217AGC199
10k
0.033
10k
10k
100K
0.1
0.0056
4.7/25
TB2118F-X
10
UN2211-X
4.7/25
4.7/25
100
22k
100k
10k
100p
100
22k
47k
0.047
1/50
8.2K
8.2K
2SD601A/R/-X
1SS355-X
2SD601A/R/-X
1SS355-X
0.01
51k
0
IC-PST600M/G/-W
820
820
2.2k
2.2k
0
4.7u
270
7p
10p
0.01
270
1/50
1/50
1/50
1/50
1SS355-X
QAU0292-001
RB160M-30-X
0.01
10k
0.01
10k
3.3k
QNZ0095-001
220k
220k
47k
47k
2SD601A/R/-X
47k
RB160M-30-X
SAA6579T-X
0.022
0.01
560p
47p
82p
0
2SD601A/R/-X
1SS355-X
1.2k
0
47k
2.2/50
47/6.3
2.2k
47p
0.001
0.047
2.2k
2.2k
10k
180k
22k
0.047
2200/16
12k
0.33
1/50
RB160M-30-X
1/50
RB160M-30-X
2.2k
47k
QAX0617-001Z QAX0401-001
4.7/25
RB160M-30-X
RB160M-30-X
UN2111-X
RB160M-30-X
47k
1/50
0.1
UN2211-X
10k
0.47/50
0.1
1k
47k
0.1
UN2211-X
100P
100P
100P
100P
100P
2SB624/4/-X
12k
100P
100P
100P
LA4743K
10k
10k
15k
470
0
47k
1SS355-X
4.7k
0.33
220
100/1047/16
47/6.3
UN2211-X
0.0056
0.033
0.082
1/50
0.18
0.047
10k
0
2SB709A/R/-X
0
22k
22/16
RB160M-30-X
RB160M-30-X
RB160M-30-X
RB160M-30-X
470
0
0
220
0
2.2k
4.7k
4.7k
4.7k
47/6.3
47k
0.1
47k
0.1
27k
27k
27k
27k
0.01
0.1
0.1
0.1
0.1
1N5401-F64
1k
820
820
2.2k
2.2k
47k
1SS355-X
22k
100/10
4.7/25
2.2k
UN2211-X
10p
6.2k
47k
0.047
0.22
0.0082
0.1
0.22
0.0082
1SS355-X
47k
QMFZ047-150-
T
47k
1SS355-X
0
BR24L16F-W-X
1SS355-X
2.2k
47
47k
0.01
RB160M-30-X
QNN0489-001
0.047
10K
0.01
100/10
12
0.047
4.7k
47/16
QQR1362-001
1SS355-X 1SS355-X
10/16
220/10
3.3k
0.01
0.047
390p
100
10k
2.2/50
390p
390p 390p
47K
20K
0.0015
0.0015
20K
UN2211-X
UN2111-X
2SD601A/R/-X
47/16
47/16
47k
UN2211-X
0.047
47/6.3
2SD1781K/QR/-X 2SD1781K/QR/-X
47k 47k
100
100
0.047
QAX0616-001Z
10
47/16
RB160M-30-X
10k
1000P
10/16
47
0
0.047
22k
1/50
1SS355-X
0.022
4.7k
4.7k
220/10
UN2111-X
100
10u
0.1
QAX0263-001Z
1K
47k
1k 10k
2.2k
10k
2.2k
2.2k
1SS355-X
1k
33K
0.012
1SS355-X
2SD1781K/QR/-X
10k 10k
2.2k
22p 27p
10k
27p
8P
0.1
0.001
0.001
47k
2.2k
0.0047
2SD601A/R/-X
QNZ0112-001
1SS355-X
0 0
27k
0.01
10/16
47k
22/16
220/10 220/10
47/16
47k 47k47k
UDZS5.1B-X
47k
0.001
UN2211-X
2.2k
4.7/25
0.1
0.22/50
UDZS11B-X
0.01
0.082
0.022
10k
0.01
22/16
4.7k
4.7k
9.1k
1SS355-X
100/16
UN2111-X
0
10k
39k
100 100
QNB0100-002
47k
10k
UN2111-X
10k
47k 47k
0.033 0.0027
UN2211-X
10/16
0.01
2SD1781K/QR/-X
330P
47k
0.047
0.047
47k
0.01
1SS355-X
270
0.1
1SS355-X
0.047
0.012
820
10M
270
1/50
390P
SQ
PSW
A-GND
A-GND
DAC-CDTI
DAC-CCLK
DAC-CSN
KEY2
DAC-PDN
INT
DIMMER
CD.L
REMOCON
ENC1
SI
CD.L
ENC2
KEY1
KEY0
SW1
LCDCL I/O
OUTRL
CDRW
SCK
OUTFL
TU.R
SW5V
CD.R
OUTFR
SO
OUTRR
SI
CDON
CH.L
TU.L
SM
LCDDA
LCDCE
VOLDA
VOLCL
MP3REQ
A-GND
CH.R
VOLDA
VOLCL
ACC5V
CD.R
9V
CH.L
CH.R
CH.SCK
I/O
DETACH
10V
SW2
MP3DOUT
SO
MP3DIN
MP3STBY
BUS0
RST
BUS1
LM0
BUS0
MP3RESET
KEY2
SCK
LM1
BUS1
BUS2
BUS3
RST
LCDCL
LCDDA
CCE
BUCK
VDD5V
MP3CLK
CDRW
TELMUTE
ENC2
CDON
BUS2
LCDCE
CD8V
DIMIN
PLLDI
PLLCE
PLLDA
PLLCL
KEY1
LEVEL
KEY0
LEVEL
BUS3
BUCK
CCE
SM
FM/AM
MP3CLK
SW2
MP3REQ
MP3RESET
MP3STBY MP3DOUT
MONO
MP3DIN
DAC-PDN
DAC-CDTI DAC-CCLK
DAC-CSN
AFCK
RR- RR+ FR- FR+
FR-
FL- FL+ RL- RL+
SQ
SW5V
INT
DIMIN
TELMUTE
SM
SD/ST
AFCK
SEEK/STOP
IFC-CONT
FR+ FL+ RR- RL+ RL-
PSW LM0 SW1 LM1 RDSCL
MONO
RDSCL
REMOCON
ENC1
FL-
RDSDA
RR+
SEEK/STOP
IFC-CONT
RDSDA
PLLDI PLLCL PLLDA PLLCE FM/AM
SD/ST
C321

KD-S891R
2-3
AB CD E F G
1
2
3
4
5
CD signal
CD servo control section
To Main amplifier section
R584
R592
C597
L401
L402
R582
IC461
C414
IC481
R559
C541
RF
C543
L403
C421
C427
C471
C474
C472
R581
IC471
C473
C569
C503
C583
R583
R594
R591
C581
C420
C591
X401
IC581
R595
C419
R586
R596
R585
C596
C582
C592
R538
IC401
C593
R593
Q430Q440
R423 R424 C413
R404
C404
C406
C409
C408
R411
C401
C402 C403
C589
C422
R425
C411
C412
C416
C417
C418
C415
R403
C588
Q502
C568
C463C462
C461 C464
C598
C599
R451
R453
R457
R440
C483
R430
R455
C440 C430
Q542
Q541
R563
R564
R565
C475
IC541
R514
R528
R527
Q521
C534
R529
R481
C522
C524
C523
C530
C531
R532 R531
R533
R534
C532
C528
C533
C521
R544
R543
R541
R545
C547
C546
C548
C549
C550
C551
R546
C556
C557
R506
C552
R547
R548
C558
C559
C572
R558
C542
C545
C501
R536
C571
R535
C529
C570
C527
R537
VREF
R526
R523
R525
R524
R539
C525
R503
R502
R511
R504
R513
R512
C544
R501
C502
Q501
L543
L541
L542
C584
C585
R588
R597
R587
C594
R598
C595
C481
C482
R401
R560
R562
C573
R561
R505
R452R456
R402
R458 R454
R530
R542
C553
R549
R550
C554
R551
R552
C555
C560
R557 R556 R555 R554
C561
C566
IC521
C565
R553
C562
C507
C506
C567
CN501
IC501
R507
C505
C504
R510
R508
R509
L544
D481
180
8.2k
0.01
47u
47u
8.2k
NJU7241F25-X
0.027
AK4381VT-X
1.5M
100/10 1/50
47u
0.01
220p
0.1
220/6.3
0.01
8.2k
NJU7241F33-X
220/6.3
100/10
100/10
270p
8.2k
180
8.2k
3300p
22p
3300p
QAX0413-001Z
NJM4565M-WE
180
22p
6.8K
6.8K
180
100/10
270p
270p
33K
TC94A20F-011
270p
8.2k
330
330
0.33
10k
0.01
0.1
0.1
0.01
0
1/50
0.01 0.01
4.7/25
100/10
47
100/10
0.01
100/10
100/10
0.01
0.01
2.2M
4.7/25
2SB1132/QR/-X
0.1
100/6.3100/6.3
0.1 0 .1
4.7/25
4.7/25
22k
47k
2.2K
4.7K
2.2K
1k
0.1
1k
4.7K
2.2K
4.7K
0.01 0.01
UN2211-X
UN2111-X
4.7K
4.7K
4.7K
TC94A14FA
330
22
22
2SB1241/QR/-T
5p
82k
270( 1/8W)
0.01
0.01
100/10
0.1
0.1
2k 10k
1k
15k
82p
0.01
0.01
0.01
10K
470k
5.6k
10k
0.015
47p
0.01
0.0027
0.01
0.033
0
470p
470p
8.2k
0.033
0
0
0.047
0.047
100/10
10k
0.01
0.01
47/10
820
0.01
100
100/10
100/10
0.0068
0
330k
82k
330k
82k
150
100/10
4.7k
8.2k
1.5k
15k
1.8k
1.5k
100/10
33k
0.01
47u
47u
47u
UDZS5.1B-X
0.1
47/6.3
1k
1k
1k
0.1 1k 47/6.3
47/10
0.1
UN2211-X UN2211-X
10k
2.2K
2.2K
0.01
2.2K
20k
47
56k
47k 0.047
100
100
0.047
100 100
0.047
0.01
4.7k 4.7k 4.7k 4.7k
100/10
100/10
TA2157FN-X
0.01
1M
0.01
0.047
0.047
100p
QGB2027M4-22S
LA6579H-X
6.8k
0.047
0.047
8.2k
3k
12k
2SB1322/RS/-T
47u
CD8V
CDON
A-GND
CD.L
AOUTR-
CD.R
GNDGND
DAC-CDTI
CD.L
CD.R
PSW
SW1
SW2
LM0
LM1
BUS0
BUS1
BUS2
BUS3
BUCK
CCE
RST
MP3REQ
MP3RESET
MP3STBY
MP3DIN
MP3DOUT
MP3CLK
CDRW
SW5V
DAC-CCLK
DAC-CSN
DAC-PDN
9V
AOUTR+
AOUTL+
AOUTL-
VF2
VCC
VT1
VF1
LD
VREF
MD
VT2
VDD5V
DMO
FMO
VREF
FOO
TRO
TE
RFRP
RFDC
FE
RF
SEL
RST
TEB
RFGC
CCE
BUCK
BUS3
FEED-
BUS2
BUS1
BUS0
FEED+
VCC
SW1
SW2
PSW
SPINDLE-
SPINDLE+
FOCUS-
FOCUS+
TRACKING+
TRACKING-
VR
LM1
CDRW
GND
FEED-
VF2
FEED+
VCC
GND
VT2
SW1
VT1
SW2
VF1
PSW
VR
SPINDLE-
LD
SPINDLE+
FOCUS-
VREF
FOCUS+
MD
TRACKING+
TRACKING-
VF1
VF2
VT2
LM0
VT1
MP3STBY
MP3CLK
MP3DOUT
MP3RESET
DAC-CDTI DAC-CCLK DAC-CSN DAC-PDN
AOUTL+ AOUTL- AOUTR+ AOUTR-
CDON
MP3REQ MP3DIN
FEED- FEED+ SPINDLE- SPINDLE+
MD
SEL TEB RFDC
LD
RFGC
FE RF
RFRP
FOO TRO FMO DMO
FOCUS+ FOCUS- TRACKING+ TRACKING-
TE

KD-S891R
2-4
KD-S891R
HAB C DE FG
1
2
3
4
5
LCD & Key control section
To Main amplifier section CN701
R658
R653
D642
IC602
CJ601
IC601
C603
R675
S601
R654
R655
R656
S603
S608
S613
S602S604S605S606
S609S610S611S612
LCD1
S614S615S616S617S618
R614 R613
R615
R616
R606R607R610 R609 R608
R601
R602
R603
R604
R605
R651
S607
R612
D641
R672
JS690
R673
C614 C613
R662
Q642
R663
D607
D620
D603
D604
D605
D617
C612
D621
D616
D622
R632 R634
R670
R671
R646
D615
D601
D612
D613
D611
D602
D610 D609
D606
R643 R642
D608
D619 D618
R641 R635 R633
R636
R638 R640
R637
R639
R647
C611
R657
C601
C602
R644 R645
R631
D644
D645
R674
D731
R659
R648
R649
Q641
D732
R660
D614
180k
10K
1SS355-X
RPM6938-SV4
VMC0335-001
LC75823W
10/6.3
0
10K
10K
10K
QLD0256-001
1.2K 8201.8K2.7K
820
820
2.7K 1.8K 1.2K
820
3.9K
820
1.2K
1.8K
1K
820
UDZS5.1B-X
47K
QSW0863-002
47K
0.015 0.015
0
0
4.7/6.3
SML-310LT/MN/-X
1.2K 1K
10K
470
1K
680
680 680
1K
1.2K
820
390
680
820
390
1K
0.012
51K
0.022
680P
1K 1K
820
UDZS5.1B-X
UDZS6.2B-X
0
NSPW310BS/BRS/
430
47K
UN2211-X 1K
2SB815/7/-X
NSPW310BS/BRS/ 430
KEY0
KEY1
S32
KEY2
S17
S31
REMOCON
ACC5V
KEY2
S30
DIMMER
S29
S28
10V
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
DETACH
LCDDA
LCDCL
LCDCE
LCDCL
ENC2
ENC1
LCDDA
LCDCE
KEY0
KEY1
S1 S2 S3 S4
S33
S1
S2 S3
S4
S5 S6 S7
S8
S9
S10
S11
S12
S13 S14 S15 S16
S17
S5 S6 S7
S8 S9
S10 S11
S18
S19 S20 S21
S22
S23 S24 S25 S26 S27
S28
S29
S30 S31
S32 S33 S34
S35 S36
S37 S38
S39
S40
S41
S42 S43
S44 S45
S46 S47 S48
ENC2
S49
DIMMER
S12
S13
S14 S15
S16
ENC1
S50
S49
S50
S34 S35
S36 S37 S38 S39 S40 S41 S42 S43 S44
S45 S46 S47 S48

KD-S891R
2-5
AB C
1
2
3
4
5
Printed circuit boards
Main board
Forward side
R545
C1
C4
C5
C31
C32
C33
C40
C41 C42
C43
C48
C49 C50
C52
C54
C55
C71
C73
C77
C81
C91
C161
C162
C163
C169
C170
C171
C172
C173
C179
C180
C191
C192
C193
C241
C242
C244
C301
C302
C303
C304
C311
C312
C313
C314
C315
C316
C317
C318
C401
C402
C403
C404
C411
C412
C414
C415
C416
C417
C418
C421
C422
C427
C461
C462
C463
C472
C473 C474
C481
C501
C503
C505 C506
C507
C523
C524
C525
C529
C541
C543
C544
C546
C547
C548
C549
C551
C552
C553 C554 C555
C556
C557
C558
C559
C560
C561
C566
C567
C569 C570
C572
C582
C583
C584
C585
C592C593
C594 C595
C596
C597
C708
C710
C711
C712
C781
C784
C801
C851
C881
C901
C902
C903
C904
C905
C907
C908
C909
C910
C913
C914
C919
C961C962
C963
C964
C965
C966
C967
C968
CN501
CN701
IC771
D321
D331
D341
D351
D710
D781
D784
D851
D891
D892
D901
D991
D992
D993
D994
D995
D996
D997 D998
IC31
IC71
IC161
IC301
IC401
IC461
IC471
IC481
IC501
IC521
IC541
IC581
IC701
IC702
IC801
IC901
J1
J321
J801
L1
L401
L402
L403
L541
L542
L543
L544
L701
L702
L901
Q6
Q8
Q10
Q31
Q51
Q52
Q53
Q81
Q91
Q321
Q341
Q501
Q521
Q541
Q542
Q781
Q881
Q891
Q976
Q977
R6
R7
R8
R10
R43
R44
R52
R53
R54
R56
R57
R58
R59
R72
R83
R93
R164 R165
R303
R304
R308
R313
R314
R321
R331
R341
R351
R404
R451
R452
R453
R454
R455
R456
R457
R458
R501
R502
R503
R504
R505
R506
R508
R509
R510
R511 R512
R513
R523 R524 R525 R526 R539
R541
R542
R543
R544
R546
R547
R548
R549
R550
R551
R552
R553
R559
R583
R584
R585
R586
R587
R588
R593
R594
R595
R596
R597
R598
R703
R704 R708
R709
R712
R713
R719
R720 R721
R722
R723
R725
R726
R729
R734
R735
R736
R741
R742
R743
R744
R745
R746
R747
R748
R749
R750
R751
R753
R756
R758
R759
R760
R763
R765
R804
R806
R807
R808
R809
R810
R851
R881
R882
R891
R892
R901
R904
R977
R978 R979
R980
TU1
X31
X71
X401
X701
X702
C475
R425
R560
R705 R707 R706
R732 R771
R772
R561
R562
C589
C588
C599
C598
D244
C483
R563
R564
R565
CN901
C771
C714
B5
C78
Q502
R514

KD-S891R
2-6
AB CD
1
2
3
4
5
Main board
Reverse side
B1
C1
C2
C3
C4
C5
C6
C8
C31
C33
C34
C35
C36
C37
C38
C39
C40
C43
C44 C45
C46
C47
C51
C53
C55
C72
C73
C74
C75
C76
C77
C81
C82
C83
C84
C85
C91
R92
C94
C95
C161
C162
C163
C164 C165
C166
C167 C168
C169
C170
C171
C172
C173
C174
C175
C176
C177 C178
C179 C180
C191
C192
C193
C194
C241
C242
C243
C244
C301
C302
C311
C312
C315
C316
C317
C318
C319
C320
C321
C322
C323
C324
C325
C341
C401
C406 C408 C409
C411
C413
C416 C417
C419
C420
C422
C430C440
C462
C463
C464
C471
C473
C474
C481
C482
C501
C502
C503
C504
C521
C522
C523 C525
C527
C528
C529
C530
C531
C532
C533
C534
C541 C542
C543
C544
C545
C550
C561
C562
C565
C566
C568
C569
C570
C571
C572
C581
C585
C591
C595
C596
C573
C701
C702
C703
C704
C705
C706
C707
C709
C710
C711
C712
C713
C716
C717
C718
C781 C782
C784
C851
C852
C881
C891
C901
C902
C903
C904
C905
C906
C907
C908
C909
C910
C911
C912
C913
C914 C915
C919
C971
CN501
CN701
D1 D2
D4 D5
D84
D240
D241
D242
D243
D701
D702
D703
D704
D705
D706
D707 D708
D709
D712
D713
D782
D852
D901
D902
D971
D972
IC301
IC901
J1
J321
J801
L1
L901
Q1
Q2
Q3
Q5
Q7
Q9
Q84
Q241
Q331
Q351
Q430Q440
Q501
Q521
Q782
Q784
R1
R2
R3
R4
R5
R9
R31
R32
R33
R34
R35
R36
R37
R38 R39
R40 R41
R42
R51
R55
R71
R73
R74
R81
R82
R84
R91
C92
R161
R162 R163
R171
R172 R173
R174
R175
R181
R182
R241
R242
R243 R244
R245
R246
R247
R301
R302
R311
R312
R322 R323 R332 R333 R342 R343 R352 R353
R401 R402
R403
R411
R423 R424
R430
R440
R507
R527
R528
R529
R530
R531
R532
R533
R534
R535
R536
R537
R538
R554
R555
R556
R557
R558
R581 R582
R591 R592
R701
R702
R710
R711
R714
R715
R716
R728
R737
R738
R739
R740
R752
R754
R755
R757
R783
R801
R802
R803
R805
R901
R902
R903
R971
R972
R976
RD
RESET
RF
SCK
TD
TU1
VDD
VPP
VREF
VSS
X1
X31
X71
X401
X701
X702
C475
B901
C9
C589
C588
C599
C598
B6
R248
C920
CN901
C714
C715
C719
B3
B4
B902
D481
R481
C586

KD-S891R
2-7
AB C
1
2
3
4
5
Front board
Forward side
Reverse side
D601
D602
D603
D604
D605 D606
D607
D608
D609
D610
D611
D612
D613
D614
D615
D616
D617
D618
D619
D620
D621
D622
LCD1 D731
D732
JS690
IC602
R601
R602
R603
R604
R605
R606
R607
R608
R609
R610
R631 R646
R647
S601
S602
S603
S604 S605
S606
S607 S608
S609
S610
S611
S612
S613
S614
S615
S616
S617
S618
C601
C602
C603
C612
C613
C614
CJ601
D641 D642
D644
D645
D731
D732
JS690
IC601
IC602
Q641
Q642
R612
R613
R614
R615
R616
R632 R633
R634
R635
R636
R637
R638
R639
R640
R641
R642
R643
R644
R645
R648
R649
R651
R653
R654
R655
R656
R657
R658
R659
R660
R662
R663
R670
R671
R672
R673
R674
R675
C611

VICTOR COMPANY OF JAPAN, LIMITED
AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.49876SCH)
Printed in Japan
WPC

SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED No.49876
2003/7
CD RECEIVER
4987620037KD-S891R
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Area suffix
E ----------- Continental Europe
EX --------------- Central Europe

1-2 (No.49876)
SPECIFICATION
Design and specifications are subject to change without notice.
AUDIO
AMPLIFIER
SECTION
Maximum Power Output Front 45 W per channel
Rear 45 W per channel
Continuous Power
Output (RMS) Front 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion.
Rear 17 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more
than 0.8% total harmonic distortion.
Load Impedance 4 Ω(4 Ωto 8 Ωallowance)
Tone Control Range Bass ±10 dB at 100 Hz
Treble ±10 dB at 10 kHz
Frequency Response 40 Hz to 20 000 Hz
Signal-to-Noise Ratio 70 dB
Line-Out Level/Impedance 2.0 V/20 kΩload (full scale)
Output Impedance 1 kΩ
TUNER SECTION Frequency Range FM 87.5 MHz to 108.0 MHz
AM (MW) 522 kHz to 1 620 kHz
(LW) 144 kHz to 279 kHz
[FM Tuner] Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)
50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)
Alternate Channel
Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 30 dB
Capture Ratio 1.5 dB
[MW Tuner] Sensitivity 20 µV
Sensitivity 35 dB
[LW Tuner] Sensitivity 50 µV
CD PLAYER
SECTION Type Compact disc player
Signal Detection System Non-contact optical pickup (semiconductor laser)
Number of channels 2 channels (stereo)
Frequency Response 5 Hz to 20 000 Hz
Dynamic Range 96 dB
Signal-to-Noise Ratio 98 dB
Wow and Flutter Less than measurable limit
MP3 decoding format MPEG1/2 Audio Layer 3
Max. Bit Rate 320 Kbps
GENERAL Power Requirement Operating Voltage DC 14.4 V(11 V to 16 V allowance)
Grounding System Negative ground
Allowable Operating
Temperature 0°C to + 40°C
Dimensions (W ×H ×D) Installation Size (approx.) 182 mm ×52 mm ×150 mm
Panel Size (approx.) 188 mm ×58 mm ×11 mm
Mass (approx.) 1.3 kg (excluding accessories)

(No.49876)1-3
SECTION 1
PRECAUTION
1.1 Safety Precautions
!Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
!Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.

1-4 (No.49876)
1.2 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.2.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
1.3 Handling the traverse unit (optical pickup)
(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the
replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a
time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.4 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the CD pickup unit.
• Apply solder to the short land before the flexible wire is disconnected from the connector on the CD pickup unit.
(If the flexible wire is disconnected without applying solder, the CDpickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land after connecting the flexible wire.
1M
(caption)
Anti-static wrist strap
Conductive material
(conductive sheet) or iron plate
Pickup
Short-circuit point
(Soldering)
Flexible wire

(No.49876)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.49876)
SECTION 3
DISASSEMBLY
3.1 Main body
3.1.1 Removing the front panel assembly
(See Fig.1)
(1) Press the release button and remove the front panel as-
sembly.
Fig.1
3.1.2 Removing the front chassis assembly
(See Figs.2 to 3)
• Prior to performing the following procedure, remove the front
panel assembly.
(1) Remove the screw Aon the left side of the main body.
(2) Release the two joints aand two joints bon both sides
of the main body.
(3) Release the two joints con the bottom side of the main
body and remove the front chassis assembly in the direc-
tion of the arrow.
Fig.2
Fig.3
Release button
Front panel assembly
Joint a
Joint a
Front chassis assembly
Joint b
Joint b
A
Front chassis assembly
Joint cJoint c

(No.49876)1-7
3.1.3 Removing the heat sink
(See Fig.4)
(1) Remove the two screws Band screws Con the left side of
the main body.
Fig.4
3.1.4 Removing the bottom cover
(See Figs.5)
• Prior to performing the following procedure, remove the front
panel assembly, front chassis assembly and heat sink.
(1) Turn over the main body, and release the two joints d, two
joints eand joint f.
CAUTION:
Do not damage the main board when releasing the joint fus-
ing a screwdriver. (See Figs.6 and 7)
Fig.5
3.1.5 Removing the rear bracket
(See Fig.6)
• Prior to performing the following procedure, remove the front
panel assembly, front chassis assembly, heat sink and bottom
cover.
(1) Remove the three screws D, two screws Eand screws Fon
the back side of the main body.
(2) Remove the rear bracket.
Fig.6
B
CHeat sink
Bottom cover
Joint a
Joint b
Joint a
Joint b
Joint c
DD
Rear bracket E
E
F

1-8 (No.49876)
3.1.6 Removing the main board
(See Fig.7)
• Prior to performing the following procedure, remove the front
panel assembly, front chassis assembly, heat sink, bottom
cover and rear bracket.
(1) Remove the two screws Gattaching the main board.
(2) Disconnect the connector CN501 and remove the main
board.
Fig.7
3.1.7 Removing the CD mechanism assembly
(See Fig.8)
• Prior to performing the following procedure, remove the front
panel assembly, front chassis assembly, heat sink, bottom
cover, rear bracket and main board.
(1) Remove the three screws H.
Fig.8
Main board assembly
G
G
CN501
H
H
CD mechanism assembly Top chassis

(No.49876)1-9
3.1.8 Removing the front board
(See Figs.9 to 11)
• Prior to performing the following procedure, remove the front
panel assembly.
(1) Remove the four screws Jon the back side of the front pan-
el assembly.
(2) Release the fourteen joints g.
(3) Release the joint hand take out the front board.
Fig.9
Fig.10
Fig.11
J
J
J
Joint g
Joint g
Rear cover
Front panel
Joint g
Joint g
Joint g
Front board Front panel

1-10 (No.49876)
3.2 CD Mechanism Assembly
3.2.1 Removing the top cover
(See Figs.1 and 2)
(1) Remove the two screws Aon the both side of the body.
(2) Lift the front side of the top cover and move the top cover
backward to release the two joints a.
Fig.1
Fig.2
A
A
A
Joints a
Top cover
Joints a
Top cover