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KD-S871R 1 3 4 2 5
Block diagram
Pickup
CN501
IC161 E.VOLUME
LM0, LM1 L-CH R-CH
OUTFL, OUTFR OUTRL, OUTRR
IC301 POWER AMP.
IC501 BTL DRIVER
TU1 TUNER PACK
MUX
J1
REST, SW1~4
KEY MATRIX S601~S620 CP601 CJ601
KEY0~2
REAR L REAR R
KEY0~2 LCD_CE LCD_DA LCD_CL
IC701 CPU
DATA, CLK
IC601 LCD DRIVER
IC71 RDS DETECTER
LINE OUTPUT
LCD_CE LCD_DA LCD_CL
COM1~3 S1~S48
LCD1
2-1
CP961
A
VA, VB, VC, VE VF, MD, LD
IC521 RF AMP
FEED SPINDLE FOCUS TRACKING LOADING
SEL,TEB RF,RFRP FE,SBAD TE,RFGO
IC541 DSP & DAC
L-CH R-CH
IC581 CD LPF
CD_L CD_R
BUS0~3, BUCK CCE, RST
B C
KD-S871R
< MEMO >
2-2
KD-S871R
Standard schematic diagram
Receiver & power amplifier circuit
5
J1 QNB0100-002
TU1 QAU0222-001
L1 4.7u C189 1/50 1/50 Q2 2SD601A COMP.OUT R187 R167 10k 10k
C77 0.022 C191 Q181 2SD601A 1/50 C171 1/50 IC301 LA4743K
Q1
UN2211
C169
22k
C192
C172
0.018
0.018
R168
R188
C2 10p
R1
C1 5P
D2 1SS133
R163
R161 220k R162 22k
0
2.2k
D1 1SS133
C3 0.1/50
22k
4.7k
R169
R170
390P
390P
R2 R3
1k 1k
C5 0.47/50
C6 0.047
4.7k
C8 0.01
4.7k
C173 0.1 CH.L
C162 0.0082
R5
C4 220P
100p
C7
Q161 2SD601A
C163 0.15 C161 1/50 C165 0.033
C166 0.0056
R351 27k C331 C168 4.7/50 C167 4.7/50 R331 27k
C351 2.2/50 2.2/50 C914 4.7/25
220/10
CD.L Q3 UN2111 B174 0 Q174 UN2111
C332
C352
0.022
C317 47/16
C313
100/16
Q43 UN2211 D161 1SS355-X
390P
C32 0.001
Q4 2SB709A
R165
R166
47k
47k
Q162 UN2111
390P
1k
10k
C342
C322
IC161
R6
47k
R341 27k
C341 2.2/50
C310 10/16
C393 0.1
C309
C31 2.2/50
R31
R32
C392 0.1
TEA6320T-X
Q31 2SD601A MONO Q32 2SD601A IFC SD/ST OSC R43 1k C41 0.033 R41 3.3k C42 0.0082 R42 1k Q7 UN2211 R7 AMEO FMEO Q5 2SB815 R33 1.5k C10 0.001
C316 22/16
C75 560P C74
R321 27k
C321 2.2/50 R310
C394 0.1
C391 0.1
*B51
4
R185
R186
47/10 C73 0.01 C188
47k
47k
4.7k R332 R322 1SS355-X D321 820 820 R342 R352 1SS355-X Q321 2SD104B D351 2.2k R343 1k 1k
C184
D3
D4
C181
1/50
CD.R
0.22/50
4.7/50 C187 4.7/50
0
1SS355-X
1SS355-X
X71 QAX0263-001
C72 47P
0.033
C185
R181
C182 0.0082
R44
33
R71
2.2k
4.7k
C186
C76 2.2/50
CH.R C183 0.15
R323 2.2k
R353
0.0056
10
Q41 2SD601A
C43 100/16
R8 FM/AM 47k
220k
R72
2.2k
R73
2.2k
C71 82P
IC71 SAA6579T-X
C933 0.01
D331 1SS355-X R333 2.2k
2.2k D341 1SS355-X Q341 2SD1048
C912 100/10
22k
R182
R10 8.2( 1/8W)
C913
R324 100
D182 1SS355-X
MA3110
SK/STP
D41
D162
Q42 2SC3661
1SS355-X
100/16
R334 100
R183 2.2k
Q331 2SD104B
3.3k
R9
2SD1048
R911
C911 47/10
Q351
C315 0.022
D994 CRS03 CRS03 CRS03 CRS03 CRS03 CRS03 CRS03 CRS03 D993 D992 D991 D997 D998 D995 D996 C304 C303 C302 C301 100p 100p 100p 100p 100p 100p 100p 100p C307 C308 C305 C306
C44 0.01
R4 22k
C164 0.22/50
C9
R354 100 R781 27k
Q783 UN2111 C712 68p
SQ
9V
9V
Q751 UN2211 9V CD.R GND CD.L REST SW1 SW2 SW3 SW4 LM0 0.1 R51 470 R52 15k
R751 10k
9V
C718
0.01
R344 100
D911 1N5401-TU
R782
1K
C908 2200/16
Q51 2SD601A
D784 UDZ11B-X
R245 180k
Q52 2SD601A
R54 10k C53
R56 47k
D241
1SS133 D782 C242 0.047 R244 12k R907 47( 1/4W)
L961 QQR0703-001
1SS133
0.015
C54 0.01
C51 0.47/50
C907
330p
C55
R241
R732
R733 47K
C241
D242
R246
R57 47k
BUS1
3
R242
C52 4700p
BUS2 BUS3 BUCK CCE
C243 22/16
R53 10k
R55 2.2k
2SD601A Q241
R247 47k
47K
33K
22k
BUS0
1k
R977
C244 1/50
12K
2.2/50
LM1
R58 47k
R243 100
Q782 UN2211
C782 22/16
220K
1SS133
IC961 HA13164A
R978
Q53 UN2211
R164 3.3K
R184 3.3K
L701 4.7u
C783 0.082
Q977 2SB709A
D910 CRS03-W
C909 0.1
D912
CRS03-W
Q976
LEVEL
AFCK
SDA
SCL
SM
PS2
CD8V
UN2211 R902
R901 0
10k
RST
SEEK/STP
R906
REMOCON
SW1
ACC5V
DETACH
R686 10K
R723
BUCK
BUS3
BUS1
100k
CCE
R743
PS2
RST
BUS2
BUS0
LM1
LM0
TEL_MUTE
R685 10K
47k
SK/STP
CD8V ILL10V
0
C312 0.047
C311 0.047
R746
47k
R904
CONT+B ACC5V
C708 100/6.3 Q781 UN2111 D901 1SS355-X
R731 100K
R742
R745 2.2K
R738
ACC5V REMOCON LED_R LED_B
R730 100K
10K
ILL10V
R744 2.2K
DETACH
47k
CP601 VMC0334-001
R747 47k
C905
10/16
R724
4.7k
R702 1.2k
47k R750 VPP
C781 220/6.3
C901 220/10
C902 0.1
C903 22/16
LCDCL LCDDA LCDCE KEY0 KEY1 KEY2 MONO RESET
J301 QNN0175-001 Q901 CP961 R902 47k QNZ0112-001
R891
R892
47k
D891
R737 47k R740 47k R706 10K C706 100/6.3
100
D892 1SS355-X
R753
S701
1SS355-X
1k
2SB709A
R901 2.2K
FMEO AMEO
TEL_MUTE
D705
D704
D703
D702
D706
D707
D701
2
C719 0.1
C720 0.1
SEEK/STP FM/AM AFCK
Q891 UN2211 C776 0.01 OSC C713 470p Q902 C891 0.047 UN2213
IFC X1 R739 47k SD/ST
C701 C721 0.1 VDD C770 R804 R801 100k SO I/O C704 0.1 10k SI 0.01 R722 0 X701 QAX0406-002Z C703 0.1 22p C702 22p
R802
VSS
MEM-IN R708 47k
100k R810 100
SCK CH.L GND
R806 22k
R704 2.2k
R710
R709
R703 2.2k
R711
R712 4.7k
R707 47k
IC701 UPD178078GF-540
Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
R808
100k
150K
R705
150K
4.7k
4.7k
4.7k
R715
R714
R718
R717
10k
10k
10k
10k
10k
R736
100k
100k
SI CONT+B
C801 0.01
100k
R805 100
R734
10k
R726 R727 R728 R729
47k 47K 47k 47k
R716
R713
2.2k
4.7k 4.7k 4.7k
R721 R720 R719
C802 0.047
LED_R
LCDDA
LCDCE
LCDCL
LED_B
SW2
SW3
SDA
SCL
SW4
SCK
SM
CH.R MEM-IN
IC801 HD74HC126FP-X
LEVEL
REST
R803
KEY0
KEY1
SO
KEY2
R807
R809
SQ
I/O
SI
Tuner signal
C709 0.01
J801 QNZ0095-001
1
CD signal Front signal Rear signal
A
B
C
D
E
F
G
QAM0158-001
R725 100K
C915 10/16
C904 220/10
QMFZ047-150-T
LM0
1SS355-X D781
R905
4.7k
R701 1k
C906
10/16
LM1
C707 0.01
4.7k
2-3
KD-S871R CD servo control section
KD-S871R
5
4
R508
R584 R581 R-CH 24K C582 4.7/25 R585
33K 12K C584 120P
R586 1.5K
LM1
LM0
20k FO SP R507 8.2k
C581
22K
820P
0.01
220/10
D501 DSK10C
R582
R504 20k
R501 8.2k
C502
C501
R506 0
22K
22K
D502 DSK10C
R592
22K
IC581 NJM4565M
C583
R583
C593
47/6.3
LD VCC SW4 VF SW3 VB SW1 VA SW2 VE GND VC LOADINGVC LOADINGR502 5.6k LOADING+ MD REST VREF SPINDLE+ FOCUSSPINDLEFOCUS+ FEED+ TRACKING+ FEEDTRACKINGLOADING+ LD VCC SW4 VF SW3 IC501 R591 LA6567
C591 820P
47/6.3
R593
C595 100/10 C594 120P 24K R594 33K R596 1.5K
C592
4.7/25
R595
12K
SPINDLE+
LOADING-
SPINDLE-
VB SW1 VA SW2 VE
TRACKING+
L-CH
TRACKING-
LOADING+
FOCUS+
FOCUS-
FEED+
FEED-
FD
Q501 C503 22/16 2SB1322
C568
C567
C566
MD REST VREF
R503 2.4k
C570
C569
C565
3
C562 C561
0.047 0.047
10p
100p
0.01
10p
L541
0.01
4.7u
100/6.3
1.5k
6.8k
QAX0413-001
FOCUS-
100/6.3
X541
3.3k
SPINDLE+
C563
TEB
C560
SEL
C564
0.01
0.047
100
SPINDLEFOCUS+ FEED+ TRACKING+ FEEDTRACKING-
R558
C559 0.047
R555
R557
R556
R554 3.3k RFGC
GND C571
RFGC
RF
FE
QGB2027M1-26S
TP1 RF
SBAD
RFRP
CN501
100/6.3 TP2 VREF C557 C572 100/6.3 R-CH R553 15k 560p C556 R552 0.01 L-CH 1.5k 3300p
C558
100/6.3
C530
C529
VREF C521
C533
56p
R533 6.8k
0.01
100/6.3
L542
4.7u
C573
R534 0.01 47k
R532 15k
R531 2.2k
TE
C532
C531
R530
0.1
47k
0.1
SBAD FE C555 R551 0.033 C554 10k 0.01 RFRP 9V CD.R GND CD.L REST C552 0.01 2700p C553 100/6.3 RF SW1 SW2
2
VCC C522 C551 0.01 C550 BUS0 BUS1 BUS2 BUCK CCE C549 100/6.3 RST R550 33k C548 0.015 0.01
SW3 SW4 LM0 LM1 BUS0 BUS1 BUS2 BUS3 R545 10k BUCK CCE
4.7k
4.7k
4.7k
4.7k
IC521 R521 VC R522 47k 47k TA2109F
BUS3
R541
R542
R543
27k
VB VE VF MD LD
R524 R525 R526
47k 100k 100k
C527 100/6.3
100p
VA
R523
47k
R544
C528
R529
C543
IC541 R549 R548 C545 0.01 R546 C546 10k C547 100/6.3 470k 68k R547 47k 47p TC9462F
RST CD8V GND
TEB
SEL
TE
1/50 C541 100/6.3
C526 100/6.3 R528 22 C542 0.01
C544 100/6.3
C523 0.01
C524
C525
R527 Q521 2SB1322
22
1
CD /MAIN signal
100/6.3
0.01
A
B
C
2-4
D
E
F
H
KD-S871R LCD driver & Operation switch circuit
5
4
10k R671 UDZS6.2B-X D671 0.012 C671
RPM6938-SV4 IC602
4.7/6.3 C672
470 R672
VCM0335-001 CJ601
COM1 COM2 COM3
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 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
LCD1 QLD0223-002
ACC5V REMOCON LED_R LED_B
BUS2 LCDCL LCDDA BUS1 LCDCE KEY0 KEY1 KEY2 S32 S31 S30 S29 S28 S27 S26 S25 S24 S23 S22 S21 S20 S19 S18 S17 GND
S48
S47 S46 S45 S44 S43 S42 S41 S40
R681 1K
R680 1K 2SD601A/R/-X Q662
IC601 LC75823W
3
R611 3.9K
S39 S38 S37 S36 S35 S34 S33
R601 Q664 820 KEY0 D601 D603 D606 D610 D615 D618 SML-310LT/MN/-X
2.7K
1.8K
1.2K
820
S606 R610 2.7K
S605 R609 1.8K
S604 R608 1.2K
S603 R607 820
S602 R606 820
S601 D602 KEY1 D604 D607 D611 D616 D621
2SD601A/R/-X Q663
2SD601A/R/-X Q661
R651 R652
2.2k 2.2k UDZS5.1B-X D651 0.022 C651
COM1 COM2 COM3 INH
100P
100P
D605
D608
D612
D614
D617
2.2/6.3
560 560
R662 R661
680 680
R665 R664
2.2/6.3
560
R663
680
R666
C662
C663
C664
S613
S612
S611
S610
S609
S608
S607 1.2K 1.2K 2.2K 2.2K 680 680 390 390 390 390
UDZS5.1B-X
D609
C661
D613
D625
R653 R654 LCDCE LCDCL LCDDA D652 D653 R655 R656
10K 10K 10K 10K 1SS355-X 1SS355-X 180k 680P C652 51K R657
OSC CE CLK DATA
1K
1K
3.9K
2.7K
UDZS6.2B-X
D662 SMLU12E16C
UDZS6.2B-X
R645
R644
R643
1.8K
1.2K
820
820
KEY2 R642 R641 R640 R639 R638 R637 R636 R635 R633 R634 R632 R631 D620
1K
R617
R616
R615
R614
R613
R612
D661
820
D664
1K
R658 10/6.3 C653
S620
S619
S618
S617
S616
S615
S614
2
1
A
B
C
D
E
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16
F
BUS3
R605
R604
R603
R602
BUS4
G
2-5
KD-S871R
KD-S871R
Printed circuit boards
Main board(Forward side) Main board(Reverse side)
GND
CTRL
MEM.DET SW5V ACC.INREMOTE IC961 ANTCTRL
AJ
D912
C909
L961
B307 B306 B305
5
C312 J301
IC961 R904 C901 CP961 L961 D910 C915 J801 Q321 Q331 Q341 Q351
R334
C311
J301
CP961 MEM
GND
ILM.10V
ACC.5V
VDD.5V
CD.8V
R354
R324
A.9V
NC
MEM.IN
B310
TEL-MUTE
R352
R342
C801
J801
C915
D911
B309 B308
REM
ACC
R332
R344
R353
C905
C309 C392 C393 C394 C891 R892 D911 C907 C905
C904
R323
R322
C309
D321
D331
R333
R343
D341
D351
J1 C184 B901 L1 J1 L1 C911 C181 C182 C913 C912
B314
B313 B315 B303
B302 23
D901
C303 C304
C305 C306
R891
R185
C302
C307
C308
C184
B316
R907
C301 C391
D991
Q891
C188 C187
R186
D992
D993
D994
B903
D995
D996
D997 D998
R166
C188 R321 R341 C187 R906
C332
C331
C352
C341
32 C168
17
R41
C321
R181
B52
C322
D1
C783
D781
Q782
Q783
R781
R782
R978
Q781
C4
Q41
4
IC301
C908
C183
R183
J302
C43 IC161
NC NC R10
C186
C718 C167 R351
Q977
R310
D2
C317
R42
R901 R902
C44
R2
C43
C908
C321
C42
C342
R182
C1
C9
C185
R911 C168
R331
C341
C41
C167
AMANT FMANT
B317
C317
IC301
C9
D1
C933
C331
R905
C316
D891 D892
C913
C351
C904
R165
C351
C911
R907
C181
B904
C912
C902
C907
C162
Q976 C914 R977 R245 R244 C165
C714
C31
FMVT AMVCC
Q43
Q42
C163
R163
1
16
R162
D41
B318
D2
1 C315
C166
C781
D782
R43
R32
R242
C6 FM/AMOSC FMVCC Q4 R3
R31
C31 C32 C164
C914
C310
C903
R506
C310
C782
D782 C781
C161 C242 C243 Q241 D242 L701 D241 C164
C7
Q32
C2
GND
C241
R246 R247
C903 C521 26 D784 C782 2 1 25 C522
D241 C243 D242 B732 L701 R243 C244
D502
R241
B731
D162
C171
C760
C244
D182
VCC R33
C171
R44
R161
D502
R1
Q31 C161
CN501
D501
R742 R743
R746 R747
R723
CN501
C527
R528 R527
C525
R526
C501
B733
R504
C5
R169
C189
C501
Q521 12
1 C524
Q501
R731 R725 R730 R738 81 . IC701 . . 100
80
.
.
.
.
.
51 50
C172 L-CH R-CH C192 Q751
C191 C173
RESET
R737
R732 R164 R702
LM1
R501
GND
C526 R529 C524 R523 R533 C533
C191 .
C169 GND NC C189
R753 B174 C776
R739
R170
R51
R187
R740
R558
R188
R53
L542
13
IC521
24
C544
R713
R56
C543
. C703 1 . . . . . 31 30 R707 R708
Q181 Q51
R58
C530
VPP
R545
L541
R530
R596
3
C550 C551 C552 R551 C555
C546
R508
R544 R543 R542
R751 C8 SD/ST SEEK/STOP S.METER C77 COMP.OUT SNC
R52 C51 R722 C701 C708 B51 C702 SCK SI
R724 R715 VDD R726 R727 L542
C544
C523 R534
C545
R502
15 C503
B501 R507
C10
28
R706
. C704
Q52
R701
Q174
C502 L541 C543 R532 R531 C531 C532 Q521 C529
R541 30 31 . . . . . 1 100
C770
C546
C52 R714 X701 C708
VCC R7
C548 R550
TU1
C592
R734
R582
R546 R548 . R549 . . 50
R711 R710 R709
. . R591 .
TU1
Q7
C707 Q1
R592
C541
C593
X701 X1
R736
C542
MUTE
C593 SO R721
C541
R594 R595 C594
Q53
C53 C51 R55
C54 R57 R4 C55
C547 R547
R54
TP2 R728 R729 VREF
TP1 C549 RF
C592 B324 R593 C573 C570 C568 C571 C569 R556 X541 C583 C567 C566 C564 C561 C553
R718 R717 R716
C553 R552 R553 C557 C556 C558
C572 81 C581 51 . . . IC541 . . 80 C571 C559 C560 R554 R555 C563 X541 S701 C569 R581 C582
IC581
C595
Q162 C3
Q2
C74
C591
R720 R719 C76 C75
D161
R805
R73
C74
R807 R806
R72
C584 R585
R804
C76
C802
C595
C549
R704 R703 R712 R705
R583 C3 CP601 D706 VSS C572
C554 C558
R5
R586
IC71
D710
Q3
R584
B706 S1B
C73 C72
REMO
ENC.1 ENC.2 NC NC SCK DATA
R71
KEY0
D705
C721 T1B D704
IC801
C582
CP601
X71
R809
R808
C583
X71
C71
R557
C562
GND
R810
GEB10007A
R801 D711
C565
CE
R802
KEY1
R803
C720
S701
C563
2 Front board(Forward side)
D625 S620
R686
R685
Front board(Reverse side)
R638 R639 D620 D615 R611 C651 R617 R654 C661 R655 R656 C652 R657 GEB10038A C653 R653 R641 R640 R651 R652
S601
R601
D601
S613
D652 D653
R631
D603 S604
D613
S612
C719 DET. 10V 5V D707
D701 D702 D703
D708 D709
KEY2
C664 C662
R635
R633
S607 S603 R671 S605
D616 S1A D662 R616 R615 R604 R605 GEB10038A R614 D617 S617
R632 R634 Q663
D662
S602
32
T1A R672
D661
R602
D621
Q661 R606 R681 Q664 C672
D602 D605
R637
R636
S609
S610
S611
S614
R607
R608
R609
R613
D671
R643 R642
C663 R680
R610 R612
S615
D612
S616
CJ601 1
R662 R661
IC602
S606
D606
S608
D607
D608
D609
D610
D611
D614
1
15
R664
A
B
C
2-6
D
E
F
G
H
R665
1
R644 R645
IC602
R603
LCD1
S618
C671
R663
49
R666
Q662
D604
D618
S619
D651 D664
C530
C503
C527
Q161
C169
R167
C526
D4 D3
C713
C706
R750
LM0
D501
Q501
R503 14
IC501
1
R744 R745
C706
R168
R8
Q5 AMVT R9 R733 R184 R522 R521 R524 R525 C528
C5
R6
R658
J302
C901
C313
C316