Read Sony BM-21 / BM-23 (serv.man3) Service Manual online
12
12
BM-21/23
BM-21/23
4-2. PRINTED WIRING BOARDS
• Semiconductor Location
Ref. No.
Location
D161
D-3
D501
C-2
D502
D-2
D503
B-6
D504
C-7
D505
B-2
D506
B-3
D507
B-2
Ref. No.
Location
D601
C-2
D701
D-9
D702
D-10
D703
D-11
D704
D-10
IC101
D-6
IC102
D-6
Ref. No.
Location
IC103
D-7
IC501
D-7
IC502
C-6
IC503
C-8
IC504
B-3
IC601
F-7
IC701
C-10
Ref. No.
Location
Q1
D-2
Q2
E-2
Q3
D-2
Q4
D-2
Q5
D-2
Q101
C-6
Q102
C-7
Q103
C-6
Ref. No.
Location
Q104
C-6
Q105
D-7
Q106
C-6
Q107
D-7
Q109
E-3
Q110
E-3
Q111
D-6
Q112
D-6
Ref. No.
Location
Q161
B-4
Q162
E-6
Q163
D-3
Q501
D-8
Q502
E-7
Q503
C-3
Q504
B-2
Q505
B-2
Ref. No.
Location
Q506
B-2
Q507
C-8
Q508
D-7
Q509
D-7
Q510
D-7
Q511
C-2
Q512
C-2
Q513
D-2
Ref. No.
Location
Q514
C-3
Q515
B-3
Q516
B-6
Q517
B-7
Q518
B-7
Q519
B-2
Q520
D-7
Q521
C-3
Ref. No.
Location
Q522
D-3
Q523
B-2
Q601
C-1
Q602
C-2
Q603
D-2
Q605
C-2
Q606
D-2
Q607
E-2
Ref. No.
Location
Q608
D-2
Q610
E-2
Q611
F-6
Q612
C-2
Q613
D-2
Q701
C-9
Q702
C-10
Q703
C-10
Ref. No.
Location
Q704
B-10
Q705
B-10
Q706
B-10
Q707
C-10
Q708
C-10
Q709
B-10
Q710
C-10
Q711
D-9
Ref. No.
Location
Q712
D-9
Q713
D-10
Q714
D-9
Q715
D-9
•
:Uses unleaded solder.
IC502
IC503
IC103
IC102
IC501
IC101
IC601
IC701
IC504
E-INDEX
S503
CUE/REVIEW
ON
OFF
S501
FAST PB
S601
LOCK
S502
ON
OFF
TAPE SPEED
2.4cm 4.8cm
S501
S401
(BACK SPACE)
S102
(POWER)
S402
(FF/BACK SPACE)
VOLUME
VR101
HRP901-1
AUDIO
HEAD
HE901
ERASE
ERASE
HEAD
DRY BATTERY
SIZE "AA"
(ICE DESIGNATION)
2PCS, 3.0V
EAR
J102
MIC
PLUG IN POWER
J101
FB902
R106
WHT
WHT
BLK
BLK
DICT
STOP
LISTEN
S101
ON
OFF
CON
DICT
VOR
S504
MIC SENS
S103
RED
GRY
BLK
VIO
MIC
MIC901
HRP901-2
LETTER
HEAD
SP501
SPEAKER
*
M901
MOTOR
*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.
BLK
BLK (COM)
(COM)
(U)
(V)
(W)
WHT (W)
RED (V)
BRW (U)
WHT
M
DC IN 3V
CN102
TAPE SPEED
4.8cm
RV601
RV601
RV602
TAPE SPEED
2.4cm
RV602
12
LCD701
(LIQUID CRYSTAL
DISPLAY)
X701
COUNTER
RESET
S701
D704
DICT/
BATT
D703
GRY
1-868-270-
1-868-270-
1
2
A
B
C
D
E
G
F
3
4
5
6
7
9
8
10
11
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