Read Sony BM-21 / BM-23 (serv.man3) Service Manual online
13
13
BM-21/23
BM-21/23
4-3. SCHEMATIC DIAGRAM – AUDIO BOARD (1/4) –
R507
R506
R515
C503
R102
R103
R512
T101
R105
R112
R113
R101
R513
S103
R514
HE901
MIC901
J101
HRP90
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP22
TP23
TP24
R501
TP27
TP28
S101(1/4)
S101(2/4)
S602(2/2)
R115
R100
TP65
TP31
TP21
TP62
TP58
R505
R114
C104
C107
C109
C110
C111
C148
C501
C506
C101
C103
C105
C108
C502
C505
C520
JR204
SUPPLEMENT-2
Page 14
JR108
R116
JR106
C102
R503
C114
R502
R106
R107
R110
R109
R108
Q101
Q502
Q501
IC501
R504
C124
3.3k
47k
10k
330K
5.6k
330
39
1k
47k
1k
1.8k
330k
10k
ERASE
HEAD
1-1
2.2k
680
0
0.0039
4.7k
0.0056
0.0068
0.0033
0.015
0.0047
0.001
0.1
0.1
0.1
35V
35V
33
4V
4V
0.47
35V
47
4V
2.2
10V
3.3
4V
220
4V
0
0
22k
0
0.1
100k
1
100k
10k
1K
82
470
100
2SD1819A-R-TX
2SD1819A-R-TX
2SB1218A-R-TX
NJM
2100V(TE1)
68k
22
6.3V
(
(
SUPPLEMENT-2
Page 15
(
(
SUPPLEMENT-2
Page 16
(
(
SUPPLEMENT-2
Page 17
(
(
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