Read Sony HCD-RG88 Service Manual online
HCD-RG88
37
37
7-16. SCHEMATIC DIAGRAM – MAIN Board (4/4) –
•
See page 28 for Waveforms.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
(
no mark : TUNER (FM/AM)
(
) : CD PLAY
[
] : TAPE PLAY (DECK A)
{
} : TAPE PLAY (DECK B)
〈〈
〉〉
: REC
∗
: Impossible to measure
C920
D907
D906
D908
D909
C919
C918
D916
D917
D915
D914
C917
C916
D919
D924
D923
D918
C914
C915
C910
R917
C911
IC951
C925
C951
IC961
C961
IC101
C922
C921
C909
D921
TP901
D509
D508
D501
D502
D503
D504
D505
D601
C434
C432
R532
C433
R541
R549
R448
R447
R446
R544
R545
R543
C546
R540
R432
R433
R434
R535
R536
R537
TP431
TP439
TP530
T
P
5
2
9
R530
R529
R
4
1
9
R
4
2
0
R
5
1
7
C516
C416
R575
C512
X502
R513
X
5
0
1
C
5
1
1
C510
R509
R
5
1
1
R
4
3
0
R
4
2
9
R503
R502
C502
TP437
TP485
R584
R591
R590
R589
R585
R588
T
P
4
6
3
C564
C562
CN401
C962
C932
CN501
D
9
2
2
D
9
2
0
C601
IC601
C602
R604
D603
R603
C603
C530
R602
D602
R601
TP514
R548
R
5
4
7
R546
R579
TP516
CN904
R918
R919
Q912
IC911
JW951
C596
FB599
Q601
C598
C498
R593
FB516
R592
FB562
R583
R488
R574
R573
R580
Q911
CN902
R916
R999
C907
Q999
R997
R998
C908
C923
IC902
C930
C903
R907
C
9
0
6
C935
R906
R901
C905
R913
R914
R912
D902
D901
R915
Q905
R920
C931
R908
C
9
0
4
R902
C901
C902
R903
IC903(1/2)
IC901(2/2)
IC901(1/2)
IC903(2/2)
R904
R905
C928
C913
C926
C933
C912
R
4
6
0
R
4
5
9
R
4
7
1
R
4
7
2
R
4
7
0
R
5
5
7
R
5
5
6
IC501
R594
R493
R597
R494
R492
CN101
3300
25V
11ES2N
11ES2N
11ES2N
11ES2N
0.1
0.1
11ES2N
11ES2N
11ES2N
11ES2N
0.1
0.1
11ES2N
11ES2N
11ES2N
11ES2N
0.1
0.1
2200
16V
2.2k
0.1
470
10V
10V
0.1
AN7809
0.1
M5F7810L
470
16V
16V
0.1
1000
25V
11ES2N
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
1SS355
47p
47p
47k
47p
10k
100
100
100
100
100
100
100
0.001
100
100
100
470
470
100
470
10k
10k
0
4
.7
k
1
0
k
2200
6.3V
6.3V
0.1
10k
0.1
16MHz
0
3
2
.7
6
8
K
H
z
1
5
p
22p
10k
3
3
0
k
1
0
0
1
0
0
10k
10k
0.022
100
100
100
100
10k
10k
0.01
100
10V
10V
30P
470
10V
10V
470
10V
10V
4P
1
1
E
S
2
N
1
1
E
S
2
N
10
50V
M62703ML
0.1
47k
1SS355
47k
0.1
100p
4.7k
1SS355
220
10k
1
0
k
10k
10k
2P
2.2k
2.7k
FA1A4M
0.1
2SC1623
10
50V
0.1
1k
4.7k
100
100
10k
10k
10k
RT1P137L-TP
13P
6.8k
2.2k
2.2
50V
50V
2SC3661
10k
4.7k
22
16V
100
16V
16V
M5282FP-T1
10
50V
100
6.3V
5.6k
1
5
0
V
100
16V
16V
2.2k
1k
2.2
50V
4.7k
4.7k
4.7k
UDZ-TE-17
-2.2B
1SS355
1M
2SK246
47k
0.01
0
2
2
p
12k
0.1
0.1
100k
NJM4565M(TE2)
NJM4565M(TE2)
NJM4565M(TE2)
NJM4565M(TE2)
6.8k
6.8k
0.1
0.1
10
50V
10
50V
2200
6.3V
6.3V
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
M30620MCN-A09FP
1k
100
10k
4.7k
C
1
C
2
C
3
C
4
C
5
C
6
C
7
C
8
D
1
D
2
D
4
D
5
D
6
D
7
D
8
E1
E2
E3
E4
E5
E6
E7
53
58
65
66
67
68
69
52
51
54
55
70
90
91
89
56
57
24
26
43
35
37
40
33
32
19
44
45
46
47
48
49
5
6
7
81
28
34
61
83
84
86
87
77
76
29
30
50
78
94
97
38
88
60
72
71
59
60
71
72
59
80
82
94
4
73
74
75
41
36
84
86
83
27
21
22
25
23
3
2
RR1
RR2
RR3
RR4
RR1
RR2
RR3
RR3
RR4
RR4
41
29
30
4
73
74
75
38
*
IIC-DATA
SPEANA
IIC-CLK
SIRCS
KEY INT DISPLAY
KEY INT POWER
POWER LED
D+4V
D+4V
EVER+4V
EVER+4V
EVER+4V
VF(1)
VF(1)
VF(2)
VF(2)
VG
VG
A+10V
A+10V
A+10V
GC+4V
GC-RESET
D-GND
D-GND
D-GND
D-GND
A+10V
SPEANA
SPEANA
VOLUME
D+4V
DGND
AGND
SW-SOLID-LED
SW-WIDE-LED
SW-LINK-LED
SW-MTRX-SURR-LED
AD-KEY
VF(1)
VF(2)
FAN ON
-VG
AC4(1)
AC4(2)
AC3(1)
AC3(2)
EVER+4V
D-GND
STK MUTE
AGND
SW-IN
IIC-CLK
IIC-DATA
D+3.3V
D-GND
X
-O
U
T
V
S
S
X
-IN
VC
C
N
M
I
S
C
O
R
IIC
-C
LK
SQ-CLK
CD-DATA
CD-CLK
ST
-M
U
T
E
ST
-C
E
S
T
-D
O
U
T
S
T
-D
IN
S
T
-C
L
K
XRST
V
C
C
V
S
S
T
C
-M
U
T
E
EQ
-H
/N
P
B
-A
/B
MODEL-IN
AVSS
VREF
AVCC
TC
-R
ELA
Y
X
C
-IN
X
C
-O
U
T
G
N
D
G
N
D
R
E
C
-M
U
TE
BU UP/DOWN-SW
A-TRIG
B
-TR
IG
C
A
P
M
-H
/L
A-SHUT
A
-H
A
L
F
B-SHUT
A
-P
L
A
Y
B-HALF
B
-P
LA
Y
CLOCK-OUT
TXD1
GEQ
S
IR
C
S
S
U
R
1
S
U
R
2
S
U
R
3
B
U
-P
W
M
3
B
U
-P
W
M
2
B
U
-P
W
M
1
CD-POWER
SENS
OPEN-SW
CLOSE-SW
STBY-RELAY
FRONT-RELAY
LOAD-OUT
LOAD-IN
O
N
/O
FF
A
U
D
IO
O
U
T
LD-ON
SQ-DATA-IN
TBL-SENS
C
A
P
M
-C
N
T1
S
O
FT
-TES
T
D
IS
P
L
A
Y
-K
E
Y
P
O
W
ER
-K
EY
S
TB
Y
-L
ED
PROTECTOR
A
M
S
-IN
T
U
N
E
D
S
T
E
R
E
O
DEST-IN
CD-MUTE
G
A
M
E
/V
C
D
V
ID
EO
-O
U
T
H
P
-M
U
TE
H
P
-D
ETEC
T
S
W
-LIN
K
-LE
D
MUTE
DATA
LINK-RELAY
SW-AD-KEY
SW-RELAY
N
O
-U
S
E
N
O
-U
S
E
NO-USE
USE
NO-
DATA
IIC-
(4/4)
STBY RELAY
LINK RELAY
(FOR CHECK)
SYSTEM
CONTROL
(1/2)
(2/2)
BUFFER
LOW-PASS FILTER
(1/2)
LINE AMP
(2/2)
FILTER AMP
MUTING
B+ SWITCH
B+ SWITCH
AGC
+5V REGULATOR
+4V REGULATOR
G
I
O
G
I
O
G
I
O
+9V REGULATOR
G
I
O
+10V REGULATOR
G
I
O
RESET SIGNAL
GENERATOR
RESET
SWITCH
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
NO-USE
R
ES
ET
A
C
-C
U
T
XLT
GC-RESET
SW
-M
A
TR
IX
-S
U
R
R
-2-L
ED
BIA
S
GEQ CLK
NO-USE
ELECTRICAL VOLUME
LINE AMP,
S
W
-O
N
-L
E
D
A
L
C
S
W
-M
A
TR
IX
-S
U
R
R
-1-L
ED
LINE-
STK-MUTE
* R493
0
4.7k
(E,MX,AR)
(SP)
µPC7805A
µPC3504
(Page
36)
(Page 34)
(Page 35)
(Page 45)
(Page 41)
(Page 43)
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