Sony HCD-EC55 Service Manual page 86

HCD-EC55/EC77/GX99
Ver. 1.2
SCHEMATIC DIAGRAM — HI-AMP BOARD —
1 2
A
B
C
D
E
F
G
OUT-L
-VH
C
+VH
OUT-R
EC77/GX99
MAIN BOARD(1/2) PA-GND
CN602
PROTECT
( (
SUPPLEMENT-1
AMP-ON
Page 4
H
IN-L
L
A-GND
IN-R
EC55
MAIN BOARD(2/2)
CN603
( (
SUPPLEMENT-1
Page 5
I
HCD-EC55/EC77/GX99
3 4 5
HI-AMP BOARD
R159 R155
10k 220
R167
2.2k
0 0
R161
10k
C151
Q151
4700p
R165
2SA2026
0
10k
OVER LOARD
DET-L
R160 R156
10 k 220
R152
0.22
R168
2W
2.2k 0
0
Q152
C152 R162
2SA2026
0
4700p 10k
D152 OVER LOARD
DET-R
MA111-TX
R166
10k
CN101
10P
1
2
3
4
5
6
7
8
9
10
6 7
IC101 IC102
POWER AMP POWER AMP
1 2 3 4 5 6 7 8 9 10 11
R151
0.22
2W
R121 R119
220 220
R122 R120
220 220
C154 0.1
0.1
C155
C105
100p
C113 C111
* *
* C111,C113
100uF/ 50V : EC55/EC77 : EXCEPT US,CND
100uF/ 63V : EC77 : US,CND/GX99
EC55
R107
1k
D121
R123 R124
MAZ8051GMLS0
47k 47 k
C118
5 R125
C107
4700p
100k 47
5.4 25V
Q101
2SA1235TP-1EF
AMP
0
PROTECT-2
R126
R127
4.7k
*
10k
C119,C120
5.5
R109,R110
0
C116
Q102
*
2SC3052EF-T1-LEF
AMP
PROTECT-1
C115 R128
0.01 10k
JW120
5
EC55:EXCEPT AEP,UK,KR/
EC77:EXCEPT AEP,RU/
GX99
10 10
8 9 10
*
IC101
* IC102
12 13 14 15
*
EC77
EC55
EXCEPT US,CND US,CND
IC101 STK433-060 STK433-070
IC102
STK433-090-E
*
R101,R102
EC77 : US,CND/GX99 220
EC77 : E2,E3,E51,MX,AR,AUS 1.8K
2.2K
EC77 : AEP,RU
2.2K
EC55
* R103,R104
EC77 : EXCEPT AEP,RU/GX99 15K
EC77 : AEP,RU
12K
EC55 5.6K
C106
100p
C103 C104
470p 470p
R105 R106
R111 C109 R108 R112 C110
47k 47k
47k 3p 1k 47k 3p
C101 C102
1 1
50V
50V
R10 3
R104
R109 R110
* *
* *
R101 R10 2
C108
* *
47
25V
C119 C120
* *
EC55 EC77/GX99
C116 0.01 0.0047
0.01
0
100 0
EC55:AEP,UK,KR/
R130
EC77:AEP,RU
100
11 12
GX99
C153
0.1
R129
1k
No mark : CD STOP