Schematic Diagram - Front Amp Section (2/2) - Sony TA-S7AV Service Manual

5-4. SCHEMATIC DIAGRAM – FRONT AMP Section (2/2) –
(2/2)
1
POWER AMP
IC801
STK402-120S
2
C801
4.7 R801
50V 1k
T2
C803
100p
R803
270
C804
C802 R802
47
220p 56k
10V
3
C854 C812
C852 R852
47 0.01
220p 56k
10V
C811
0.01 R853
270
C851
4.7 R851 C853
50V 1k 100p
T1
Q961
2SC1841
AMP ON
(Page 12)
SWITCH
R966
33k
C963
100
10V
R965
15k
D963
1SS133T-72
4
T3
Q897
2SC2785
2SC2785
6
7
X9
8
9
10
11
R968
1
R964 R963
100 100
C962 C961
100 100
100V 100V R967
R805
10k
0.22/0.22
5W
R806
R804 R809
1k
56k 10
1/2W
R807
15k C806
0.068
Q801
2SC2785
OVER LOAD
DETECT C807
R808 0.068
100k
R858 C857
100k 0.068
C856
0.068
R857
15k
Q851
1/4W
2SC2785
R859
OVER LOAD 10
R854 1/2W
DETECT
56k
R856
1k
R855
0.22/0.22
5W
R898
4.7k C892
R895
2.2
10k
50V
Q896
2SC2785
Q893 R894
2SA1175 10k
Q895 PROTECT R891
Q894-897
2SC2785 56k
DETECT
PROTECTOR
R896
33k
Q892 Q891
2SC2785 2SC2785
Q894
C893 C891
Q891,892
R897 100 100
22k 10V 10V DC DETECT
Y11
R971
2.2k
Q962
2SA988 R972
22k
Q962,963
AMP ON/OFF
CONTROL
R970 Q963
100k 2SC1841
R973 R974
2.2k 10k JW881
C964
R969
47
22k
50V
Y10
Q881
2SA1175
R885
10k
R883
Q881,883
47k
RELAY DRIVE
R889
10k
X12
2SC2785
R887
100k
Y5
(AEP,UK)
Y2 L832
R838 R833 * 10 1/2W
47k
Y3 R831 *
R837 L831
47k
Y1 R835 * (AEP,UK)
R839
L833
47k
(AEP,UK)
D831
1SS133T-72
T4
C837
4.7
JW26
50V
JW27
X13
D802
1SS133T
-72
R892
68k
13 13
Z1 TP107
Z2 TP106
Z3 TP105
Z4 TP104
Z5 TP103
Z6 TP102
Z7 TP101
EPT901
C987
0.1
D911
D5SBA20 C911
0.1
100V
TP108
C912
0.1
TP109
100V
TP110
TP111
D951
TP112
D5SBA20
C955
0.1 TP113
C956
C951 C953
R953 R951 0.1
3300 3300
100k 100k
63V 50V
C952 C954
R954 R952
3300 3300
100k 100k
63V 50V
(AEP,UK)
TP114
R812
10 C808 C809
L811 1/2W 0.1 0.1
TP115
RY881
R811 TP116
*
TP117
L861
R815 R814 (AEP,UK)
47k 47k
R862
(AEP,UK)
R881 10 C858 C859
220 1/2W 0.1 0.1
2W
R861
*
D881 * R811,861
1SS133T-72
10 1/2W (AEP,UK)
JW (KR,MX,AUS)
Q883
C861 C862
0.01 0.01
TP118
R831,833,835
*
TP119
(AEP,UK)
JW(KR,MX,AUS)
TP120
TP121
TP122
R836 R834 R832 TP123
10 10 10
1/2W 1/2W 1/2W
C835 C833 C831
0.1 0.1 0.1
C836 C834 C832
C863
0.1 0.1 0.1
0.01
C865
0.01
C864 0.01
Y1 TP140
TP139 CENTER GND
Y2 TP138
TP137
Y3 TP136
TP135 SURROUND RY
Y4 TP134
Y5 TP133
Y6 TP132
TP131
Y7 TP130
TP129 CENTER GND
Y8 TP128
EPT902
Y9 TP127 OVERLOAD DETECT
Y10 TP126
TP125
Y11 TP124
TA-S7AV
NO101
(Page 19)
7P
VP
AC4(HIGH)
AC4(HIGH)
AC3(LOW)
AC3(LOW)
(Page 19)
VF
VF
(CHASSIS)
NO102
6P
AC1
(Page 19)
AC1-GND
AC1
AC2
AC2-GND
AC2
TM101
4P
R-CH
R
R-GND
FRONT SPEAKER
IMPEDANCE
L-CH
USE 6-16Ω
L
L-GND
(CHASSIS)
(CHASSIS)
TM102
6P
REAR R-CH
R
RR-GND
REAR SPEAKER
IMPEDANCE
REAR L-CH
USE 8-16Ω
L
RL-GND
CENTER
CENTER SPEAKER
IMPEDANCE
C-GND
USE 8-16Ω
(CHASSIS)
(CHASSIS)
CN103
13P (CHASSIS)
CENTER OUT
REAR R-OUT
REAR GND
REAR L-OUT
DC DET
PROTECT
REAR L-IN
(Page 15)
REAR GND
REAR R-IN
CENTER IN
CN108 (CHASSIS)
4P
-VL
GND
+VL
(Page 15)
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.