JVC KD-S785 Service Manual page 55

Standard schematic diagrams
Main amplifier section
TU1
QAU0258-002
J1 L1
B1
4.7u
0
AM.VCC
C7
R9
C8
0.01
C3
D1 D2
C1 C2
C39
1000P
LOCAL
C36
7p
C38
0.001 2SB815/7
IC31
Q6
TB2118F C37
C35
10p
10p
R7
4.7k
FM/AM
R6
R37 2.2k
PLLCE 47k
Q7
R36 2.2k
PLLDA UN2211
R35 2.2k
PLLCL
R34 2.2k
PLLDI
SD/ST
C46 0.01
C47 0.01
10( 1/8W)
C49
R43 R44
0.001
470 220
C32 C50
47p 100p
R32
6.2k
Q31
C34 C33 UN2211
10/16
0.047 47/6.3
9V
CD.R
A-GND
CD.L
REST
SW1
SW2
SW3
SW4
1SS355-X
LM0 D981
LM1
R981
47k
Q981
BUS0
D982 2SD601A( R)
1SS355-X
BUS1
BUS2
BUS3
BUCK
CCE
RST
CD8V
MP3REQ
MP3RESET
MP3STBY
MP3DOUT
MP3DIN
MP3CLK
CDON
CDRW
SW5V
VDD5V
DETACH
10V
ACC5V
REMOCON
ENC1
ENC2
LCDCL
LCDDA
LCDCE
KEY0
KEY1
KEY2
0.1 0.1 0.1
CN701
VMC0334-001
R806 10k
R805
100k
CH.R
GND
CH.L
R804
22k
CH.SCK
R803
100
C802
0.01
R810
100
C801
0.047
IC801
HD74HC126FP
J801
QNZ0095-001
2-4 (No.49748BSCH)
C5
1/50
C81 1/50 R81 1.2k
C91 1/50 R91 1.2k
C92
Q2
Q1 0.0056
R82 C82
R92
4.7k 0.0056
4.7k
C4
TU.L
R3
4.7k
CD.L
Q3
R5
UN2111
47k
R8
10k
R4
3.3k
Q8
CD.R
UN2211
R2
47k TU.R
R1
C10
R10
10k
R758
47k
VSS
IC701
UPD784215AGC172
R720 1.2k
R719 0
CDON
C706
VDD
0.047
VOLDA
VOLCL
VPP
R760 47k
R759 47k
BUCK R716 0
CCE R715 0
RST
R714 47k
BUS0 R713 0
BUS1 R712 0
BUS2 R711 0
BUS3 R710 0
R709 47k
CDRW R708 3.3k
SI
SO
I/O
SW5V R707 47k
R706 47k
R807
100K R705 47k
R704 47k
R808
INT
330
SCK
R809
22k
X1
X701
R801
47k
X702
QAX0617-001Z QAX0401-001
D243
1SS133
R244
C243
12k R243
0.047
180k
R245
100
C241
R247 1/50
56k
R242 R241
22k
C242
22/16
Q241
2SD601A( R)
R161 D240
220k 1SS355-X
220k
1SS355-X
R171
2.2k D241
R173
R172
22k
C178
0.0056
C177 C179
4.7/25
0.033
C174 C175
C172 1/50
0.0082 0.15
C180 4.7/25
C176
0.22
C171 1/50
R181
IC161
TEA6320T-X
R182
C161 1/50
C166
C170 4.7/25
C162 1/50
0.22
C167 C169 4.7/25
0.033
C164 C165 C168
0.0082 0.15
0.0056
C191 C192
R162
47/16 100/10 22k C194 C193
0.082 100/10
R163
2.2k
L701
47u
R729
47k
C782
0.082
C711
220/10
Q781
UN2111
C713
0.1
C781
47/6.3
D781
1SS133
R892 R891
R734 2.2k 47k 1k
LCDCE
R735 2.2k
LCDCL
R736 2.2k
LCDDA
R737 0
I/O C707
R738 4.7k
0.047
SCK
R739 4.7k
Q891
SO UN2211
R740 4.7k
SI C891
0.1
TD RD
R741 10k SM
R742 47k
LEVEL
R743 10k
KEY2
R744 10k
KEY1
R745 10k
KEY0
R746
ENC2
10k
4.7k
R747
4.7k R748
4.7k R749
R765 0
47k
R767
47k
R766
C712
0.01
IC702
IC-PST600MG
RESET
R757
R756
C710 2.2k
47k
47/6.3
IC301
47k
LA4743K
LEVEL
27k 2.2/50
C312
R312
OUTLF
OUTLR
R311
C311
27k 2.2/50
C301
R301
2.2/50
270 27k
VOLDA
R302
C302
27k
2.2/50
R315
10k
R342 820
R352
820
R351
D351
1SS355-X
2.2k
270
R341
VOLCL
OUTRR
2.2k
D341
OUTRF 1SS355-X
D321
1SS355-X
R321
2.2k
R331
D331
2.2k
1SS355-X
R322 820
R332 820
R782
47k
R784 Q784
47k 51k
UN2111
R783
R979
1k
R978 0
D782
1SS133
Q782 R901
UN2211 1k( 1/4W)
C784
Q977 R977
2SA1037 100/16 12k
Q976
C902
UN2211
2.2/50
R980 R976
47k 27k
IC901 AN80T07
D902
1SS355-X
0.1
100/16
R852
0
QNN0175-001
C913 C910 C911
10/16 47/16 0.1 D851
R851 C852
CRS03 10k 0.01
C851 D852
10/16 CRS03
C316
4.7/25
0.1 C322
0.1 C323
0.1 C324
0.1 C325
CRS03 D991
CRS03 D992
CRS03 D993
CRS03 D994
CRS03 D995
CRS03 D996
CRS03 D997
CRS03 D998
100p C961
100p C962
100p C963
100p C964
100p C965
100p C966
100p C967
100p C968
D901
1N5401TU
C901
2200/16
C916
C917
D971
CRS03
CN901
QNZ0002-001
J321
QAM0308-001
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
SHEET 1