Sony CA-755 Maintenance Manual page 118

CA-755 (UC)
CA-755 (J)
CA-755P (CE)
1
INCOM +7.5V
1/2
+7.5V
1/2 IC1(2/2)
1/2 GND
EF10
40 INCOM TALK ON IN OUT
GND
L4
EF11 22µH
37 INCOM ON (REM) IN OUT
C7
GND
6.8
16V
:TA-CA
2
D2
1SS123
11 MUTE CONT IN
R1
100k
EF13
38 INCOM ON (CAM) IN OUT
GND
EF14
3
39 CAM DET IN OUT
GND
24 N/ P IN
L1
22µH
47 INCOM +7.5V IN
48 INCOM +7.5V IN
C1 C3
6.8 33
16V 16V
:TA-CA :TA-CC
25 MIC ON/OFF
26 NC
4
EF18
41 INCOM VR IN OUT
GND
EF19
42 PGM VR IN OUT
GND
EF20
43 VF AUDIO CONT IN OUT
GND
EF21
44 INCOM REM IN OUT
GND
8 -5V
7 -5V
6 +5V
5 +5V
5
A B
TLC27M2
5
7
1
6
Q3 Q4 IC8
2SA812 ,N'M TA78L05
L7
C10
0.1 22µH
R21
,N'M
R87 D15
100 1SS123
1 2
IN OUT
8
Q4 GND
3
R2
22
R90
100k
Q3
R3
100k C44
C41 10
0.1 10V
:TA-CA
C11 C18
10 22 R326
20V 20V ,N'M
:TA-CB :TA-CC
IC10
MC14053BF
D10
1SS123
16
D12
1SS123
10
13
C5 R44
0.1 5.6k 14
12
11
R69 1
S2(3/4) 0 15
2
10
4 3
R70 3
0 4
5
9
INH GND VEE
6 8 7
S2(2/4)
C
TR-101 (2/2) TR-101 (2/2)
C76
6.8
Q22 Q23 IC11
C75 16V
2SC1623 2SA812 TC4S66F 0.1 :TA-CA TC4S71F
R103
100k S4
Q23
R126 R132
100k 10k 7 5 3 1
D19
8 6 4 2
1S2835
5
1 2
11
4 3
D21
1S2835
R104
100k
Q22
2
1
R98 7 R111
100k 100k
R142 R144 R146 R149
8 100k 100k 100k 100k
S2(1/4)
INCOM PGM INCOM VR BAL
X2 MIX MIX MODE
IC12(1/2) Q27 IC12(2/2)
LM358PS DTC144EU LM358PS
C74
R91 R96 R114 6.8 R145
100k 100k 47k 16V 47k
:TA-CA
R115
120k
R143 R148
120k 100k 8
3 5
R116 1 7
12 12
100k
2 3 6
RV6 2 R128 4
50k 1k
1 R119 R156
1 1
27k 27k
RV3 2
5k RV8 2
5k
3
3
Q27
S2(4/4)
6 1 R120 R151
56k 56k
5 2
7-8 7-8
D E
IC14 IC15
TC4S11
14 IC16(1/4)
8 MC14011BF
10
16
9
IC16(2/4)
MC14011BF
5
4
16
6
IC16(3/4)
MC14011BF
13
11
16
12
IC16(4/4)
MC14011BF
5 1 5
3 2
16
4 2 4
14 15
1
7
3 3
IC17
Q30
MC14053BF
DTC144EU
16
R184
0
17
13
14
R181 12
2.2k 11
RV11
10k 1
;T 15
3 2
10
2 R160 R182
1k 2.2k
3
1 4
5
9
Q30
RV9
INH GND VEE
50k
6 8 7
S5(1/2)
INCOM
4
MIX
3 1
PGM
2
8
INCOM LEVEL
7 5 S5(2/2)
6
EARPHONE MODE
F
INCOM TALK ON 1/2
1/2
PGM MUTE
INCOM +5V OUT 29
INCOM +5V OUT 30
Q43 IC18
L16
22µH 2SC1623 M51131L
C112
6.8
16V R212
:TA-CA ,N'M
C109 C111
4.7 0.1
10V
TA-CA
1 6 9
C102
VCC
1 R213
50V 4 22k
REF
;BP 3
OUT1
2
IN1
R214
C103 22k
1 R203 13
OUT2
50V 47k
18
;BP
14
IN2 VOL2
10
CONT TP6
12
MODE SEL
VOL1
8
CONT TP7
PASS
GND THRU FILTER
7 11 5
Q43
R194
100k
C113
6.8
R201 16V
100k :TA-CA
CA-755/755P
G H