Sony BM-23MK2 Service Manual ▷ View online
13
13
BM-23MK2
BM-23MK2
6-1. BLOCK DIAGRAM – AUDIO SECTION –
HRP901-1
AUDIO HEAD
HE901
ERASE HEAD
J101
IC501
LETTER PB AMP
IC701
SYSTEM CONTROLLER
MIC901
MIC
HRP901-2
LETTER HEAD
Q101, T101
BIAS OSC
IC101
PRE AMP
IC102
POWER AMP
J102
SP501
SPEAKER
M901
MOTOR
S102
(POWER)
S402
(FF/BACK SPACE)
TH601
S101(3/4)
S602(1/2)
S601 (1/2)
IC103
POWER AMP
IC601
MOTOR SERVO
Q501, Q502
AMP CONTROL
S101 (1/4)
Q504, Q505, Q523
E-INDEX
Q519
SWITCH
Q506
INVERTER
Q512
SWITCH
LISTEN DICT STOP
CONF DICT
S103
MIC SENS
S602 (2/2)
TAPE SPEED
2.4cm 4.8cm
S503
X701
1MHz
LCD701
E-INDEX
Q161 - Q163
LED CONTROL
S101 (2/4)
FAST PB
Q104, Q106
MUTE
Q102, Q107
MUTE CONTROL
Q103
ATT
Q105
COMP
Q509
INVERTER
S501
OFF ON
CUE / REVIEW
Q508, Q510, Q520
VOR
S504
VOR
VOR
Q701 - Q703
LCD DRIVER
LCD DRIVER
Q704 - Q706
LCD DRIVER
LCD DRIVER
Q707 - Q709
LCD DRIVER
LCD DRIVER
Q710
SWITCH
Q711
SWITCH
Q712
INVERTER
Q713
INVERTER
IC503
VOR
Q507
SWITCH
Q111
INVERTER
Q112
SWITCH
Q2, Q3, Q5
ALARM
Q611
SWITCH
Q521
SWITCH
PH501
PHOTO
COUPLER
TAP ADJ.
VCC 3V
BATT
CN102
+B
Q109, Q110
SWITCH
DRY BATTERY
SIZE "AA"
(ICE DESIGNATION)
2PCS, 3.0V
DC IN 3.0V
Q1, Q4
MUTE SW
Q715
INVERTER
Q714
INVERTER
Q516
LED CONTROL
IC502
BATT VOLTAGE DET
IC504
DC-DC CONVERTOR
Q606, Q608
VOR CONTROL
Q517, Q518
BATT DET
Q511
SWITCH
S502
D507
ON
OFF
LOCK
D503
VR101
EAR
Q601 - Q603,
Q605, Q612, Q613
SERVO CONTROL
Q503, Q513 - Q515
PHOTO REFLECTOR
DET
Q522
SWITCH
1
3
2
4
TAPE
SPEED ADJ
2.4cm
RV602
VOLUME
TAPE SPEED
2.4cm 4.8cm
MIC
PLUG IN POWER
6
7
4
23
22
17
12
13
15
10
1
REC +B
+B
PLAY +B
REC 3V
D703
PLAY +B
REC +B
REC3V
VCC3V
PLAY +B
S401
(BACK SPACE)
D701
D702
REC +B
4
1
5
8
PLAY +B
22
10
OSC
BS
4
IN.CTL
7
BATT1
23 OSC
21 COM3
COM-1
SEG 0
I
SEG7
SEG-1
I
SEG-8
11, 14 - 20
6 COM2
COM-2
5 COM1
COM-3
3VIN
3VOUT
5
RECOVERY
TIME CAP
1 INPUT
6
OUT1
7
OUT2
IN(-)
SHUTDOWN
OUT(-)
OUT(+)
TAPE
SPEED ADJ
4.8cm
RV601
8
BATT2
9
PHOTO
3
POWER
S701
3V IN
1 OUT1
2 OUT2
8
VCC
3V IN
BATT
+B
3VOUT
BATT
Q610
SWITCH
4
1
5
8
IN(-)
+B
+B
SHUTDOWN
OUT(-)
VCC3V
REC+B
OUT(+)
14
15
5
4
VREF
IN+
UOUT
VOUT
6
WOUT
13
S/S
M
Q607
SWITCH
DICT/BATT
LISTEN DICT STOP
COUNTER
RESET
LISTEN
DICT STOP
S101 (4/4)
LISTEN DICT STOP
S601 (2/2)
FAST PB
PLAY +B
Signal Path
: PB (LISTEN)
: REC (DICT)
14
14
BM-23MK2
BM-23MK2
6-2. 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
15
15
BM-23MK2
BM-23MK2
6-3. 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
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
16
16
BM-23MK2
BM-23MK2
6-4. SCHEMATIC DIAGRAM – AUDIO BOARD (2/4) –
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
•
See page 20 for IC Block Diagrams.
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