Sony BM-23MK2 Service Manual ▷ View online
17
17
BM-23MK2
BM-23MK2
6-5. SCHEMATIC DIAGRAM – AUDIO BOARD (3/4) –
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
•
See page 20 for IC Block Diagram.
18
18
BM-23MK2
BM-23MK2
6-6. SCHEMATIC DIAGRAM – AUDIO BOARD (4/4) –
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
T
P56
T
P57
JR110
JR105
JR202
JR201
JR1
R9
TP76
R540
R542
R11
C615
C513
C514
C516
C511
C611
C613 C614
C6
16
C617
C619
C517
C521
C601
C602
C603
C606
C607
IC
60
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
R
635
R636
R646
R645
Q610
R615
R606
D
507
Q511
C515
R1
R6
D502
R541
C522
IC
503
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
L
B1979VS
-T
LM
-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.
•
See page 20 for IC Block Diagram.
19
19
BM-23MK2
BM-23MK2
6-7. SCHEMATIC DIAGRAM – LCD BOARD –
R703
R704
R707
R705
R710
R706
R712
R713
R717
R718
R719
R720
R721
LCD701
IC701
R724
R725
R723
R726
R728
R729
R714
R734
R731
C704
C705
R722
R727
R701
R702
Q701
Q702
Q703
Q704
Q706
Q705
Q707
Q708
Q709
C703
R708
R709
R711
R715
R716
C701
C702
X701
R730
Q710
R736
S701
Q712
Q713
Q711
Q714
D702
Q715
D701
D703
D704
100k
100k
330k
150k
100k
330k
150k
330k
100k
100k
150k
330k
330k
BU2456-24
1M
1M
1M
1M
1M
1M
330k
100k
100k
0.015
0.015
1M
1M
470k
470k
2SD1819A-R-TX
2SB1218A-R-TX
2SD1819A-R-TX
2SD1819A-R-TX
2SD1819A-R-TX
2SB1218A-R-TX
2SD1819A-R-TX
2SB1218A-R-TX
2SD1819A-R-TX
0.033
470k
470k
100k
470k
470k
0.1
0.1
1MHz
100k
2SB1218A-R-TX
120k
UN5210-TX
UN5210-TX
UN5210-TX
UN5210-TX
RB425D-T146
UN5210-TX
RB425D-T146
GL8PR29
MA8051-TX
•
See page 12 for Waveform.
•
See page 21 for IC Pin Function Description.
20
20
BM-23MK2
BM-23MK2
• IC Block Diagrams
IC102, IC103 MM3111AWLE
— AUDIO Board —
1
BIAS
3
4
2
8
6
5
7
SHUTDOWN
BYPASS
+IN
-IN
VO2
GND
VDD
VO1
1
ROUT1
CO3
CO4
VCC
2
ROUT2
3
TC
4
ADJ
VCC
OP1
OP2
CO1
CO3
8 VCC
7 CF
6 RIPPLE
5 GND
IC502 MM1210-XFF
IC601 LB1979VS-TLM-E
FC GND
VCC
VCC
FC
WB
VCC
NC
UOUT
VOUT
WOUT
P-GND
VB
UB
GND
TO
CONTROL
BLOCKS
TO
EACH
BLOCKS
N1
OUT
VSP
IN+
VREF
S/S
COM
OSC
7
5
4
3
1
2
6
8
9
10
11
12
13
14
15
16
18
20
19
STARTING
DETECT
POWER
SUPPLY
BIAS
OSCILLATING
CIRCUIT
SPEED CONTROL
REFERENCE VOLTAGE
REFERENCE
VOLTAGE
CURRENT
DETECT
SPEED
DETECT
WAVEFORM DETECT
COMMUTATION STARTING LOGIC
SOFT SWITCH
PRE DRIVER
+
–
17
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