Sony BM-21 / BM-23 (serv.man3) Service Manual ▷ View 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
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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
(
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14
14
BM-21/23
BM-21/23
4-4. SCHEMATIC DIAGRAM – AUDIO BOARD (2/4) –
•
See page 18 for IC Block Diagrams.
R119
R121
VR101
R125
R132
R126
R144
R145
R161
R160
R151
R124
Q105
R159
TP29
TP51
TP52
TP30
TP39
TP40
TP41
TP42
TP43
TP44
TP45
S101(4/4)
R133
R123
R111
R117
JR101
R135
R136
R171
R169
R140
R138
TP72
R168
TP68
TP63
TP69
TP67
TP71
TP59
TP60
TP70
TP75
JR901
R120
FB902
FB901
R141
R152
C136
R118
R142
R134
R150
C140
C151
C127
C123
C106
C115
C118
C119
C125
C129
C138
C122
C153
C157
C159
C113
C121
C126
C131
C152
C156
C158
C160
R127
Q106
Q104
Q102
Q103
R122
C116
C141
C144
Q107
Q111
Q112
JR151
R139
R130
IC102
C137
C139
IC103
S102
Q109
C150
C146
C147
Q110
J102
SP501
S402
CN102
IC101
S501
R158
R131
C128
330k
470
10K /15A
10k
1k
3.3k
47k
270
100k
10k
4.7k
22
UN5215
180
47k
2.2k
39k
330
0
0
10k
100k
22k
22k
0
22
0
1k
FB
FB
390k
18
0.1
27k
47k
470K
2.2k
22
4V
4V
100
4V
2.2
10V
10V
1
0.01
0.0047
0.001
1
0.001
0.1
0.1
1
0.1
100p
0.1
0.22
35V
22
4V
4.7
10V
10V
47
4V
22
4V
4V
1 10V
0.1
22
4V
4V
2.2
2SB1218A-R-TX
2SB1218A-R-TX
2SD1819A-R-TX
2SD1819A-R-TX
2.2k
22
4V
220
4V
0.01
UN5214-TX
UN5214-TX
UN5214-TX
0
100k
100k
MM3111AWLE
0
1
10V
MM3111AWLE
(POWER)
2SA1362-G-EL
0.001
0.47
220
4V
2SD1819A-R-TX
SPEAKER
(FF/BACK SPACE)
CX
A2500N
-T4
3.3k
3.3k
100
4V
C112
0.01
SUPPLEMENT-2
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15
15
BM-21/23
BM-21/23
4-5. SCHEMATIC DIAGRAM – AUDIO BOARD (3/4) –
•
See page 18 for IC Block Diagram.
HRP901
R531
R550
R529
R539
C519
R523
R546
R547
L501
R155
TP25
TP26
TP19
TP20
TP17
TP18
TP8
TP9
TP10
TP11
TP12
TP13
TP14
TP15
TP16
R510
R511
R166
R170
R528
R526
R527
R561
R562
R162
R163
R165
R164
R552
R553
C163
R524
TP73
JR203
R157
C161
C162
C164
C165
C507
C510
C523
C508
C512
C525
C526
JR205
R508
R509
R548
R549
D503
S401
R167
Q161
Q163
R154
R153
R544
Q516
R156
Q162
D161
D506
D504
IC504
Q517
Q518
C509
C528
Q519
Q505
Q504
Q523
S503
Q512
D505
IC502
C504
Q506
S502
CN101
-2
1k
100k
68k
100k
0.1
100
1k
10k
680
100k
75k
2.2k
1M
15k
330k
330k
33k
33k
10k
270k
270
2.7k
1.2k
680
1
15k
0
22k
0.1
0.1
1000p
3300p
0.1
0.022
0.1
10 4V
33
4V
4V
22
6.3V
22
6.3V
0
7.5k
10k
33k
11k
MA111-TX
220
2SD1819A-R-TX
2SD1819A-R-TX
47
10k
10k
XP1501-TXE
100
2SD1819A-R-TX
MA111-TX
MA729-TX
MA111-TX
XC6371A300PR
UN5114-TX
XN1215-TX
0.022
0.1
2SD1819A-R-TX
2SD1819A-R-TX
2SD1819A-R-TX
2SD1819A-R-TX
2SD1819A-R-TX
MA111-TX
MM1210-XFF
0.1
UN5214-TX
12P
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16
16
BM-21/23
BM-21/23
4-6. SCHEMATIC DIAGRAM – AUDIO BOARD (4/4) –
•
See page 18 for IC Block Diagram.
R530
R522
R519
R521
R517
R520
R543
R545
R551
R538
R516
S504
R618
R532
R604
R605
R607
R603
R602
R608
R616
R2
R3
R4
R7
R8
*M901
R625
R631
R632
R633
R637
R639
R640
RV601
RV602
C1
C2
C3
TP46
TP47
TP48
BLK(COM)
BRW(U)
RED(V)
WHT(W)
(U)
(V)
(W)
(COM)
TP49
TP50
TP53
TP54
TP33
TP34
TP35
TP36
TP37
TP38
TP32
S101(3/4)
S601(1/2)
S601(2/2)
S602(1/2)
JR102
R535
R10
R642
R536
R533
TP66
TP64
TP61
TP55
TP
56
TP57
JR110
JR105
JR202
JR201
JR1
R9
TP76
R540
R542
R11
C615
C513
C514
C516
C511
C611
C613 C614
C
616
C617
C619
C517
C521
C601
C602
C603
C606
C607
IC60
1
Q4
Q2
Q1
Q3
Q5
D501
Q513
Q514
Q515
Q503
Q521
PH501
Q522
Q507
Q509
D601
Q601
Q602
Q605
Q612
Q613
Q603
Q607
Q611
Q606
Q510
Q608
Q520
Q508
C618
TH601
R50
R635
R
636
R646
R645
Q610
R615
R606
D507
Q511
C515
R1
R6
D502
R541
C522
IC503
R537
680
470
1.5k
120k
100k
10k
33k
68k
10k
100k
100k
10k
6.8k
330k
33k
22
10k
10k
27k
68k
33k
3.3k
33k
100k
100k
MOTOR
10k
1M
1M
1M
100k
1k
4.7k
4.7k
4.7k
0.0033
0.0033
0.0033
0
4.7k
330k
8.2k
39k
39k
0
0
0
0
0
3.3k
4.7k
4.7k
68
10
4V
0.022
0.1
0.001
0.47
0.1
0.1
0.1
0
.22
0.047
0.47
10
4V
4V
22
4V
4V
22
4V
22
4V
22
4V
4V
1
16V
1
16V
LB
1979VS
-TLM
-E
XN1215-TX
2SB1218A-R-TX
2SD1819A-R-TX
2SD1819A-R-TX
2SD1819A-R-TX
MA729-TX
XP1214-TXE
XP1501-TXE
UN5115-(TX)
UN5215-(TX)
2SD1819A-R-TX
NJ5161K-F10-A
UN5114-TX
UN5114-TX
UN5215-(TX)
M
A729-TX
2SB1218A-R-TX
UN5215-(TX)
UN5215-(TX)
2SB1218A-R-TX
UN5215-(TX)
2SD1819A-R-TX
XP1215-TXE
UN5214-TX
UN5114-TX
XN1214-TX
UN5215-(TX)
UN5214-(TX)
UN5215-(TX)
2.2
8.2k
47k
4.7k
4.7k
3.9k
UN5214-TX
100k
100k
M
A111-TX
2SB1218A-R-TX
0.01
330k
3.3k
MA729-TX
33k
22
4V
4V
N
JM
2072M
(TE2)
100k
*M901
Exchange the connection
of U and W in order to
connect the motor
in reverse direction.
Exchange the connection
of U and W in order to
connect the motor
in reverse direction.
SUPPLEMENT-2
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