10
10
WM-EX422
12
(12)
1-687-633-
MAIN BOARD (SIDE B)
12
(12)
1-687-633-
(SIDE A)
MAIN BOARD
TP15
TP57
TP610
BP1
R734
D711
S704
FF
R312
R719
C703
S601
(MD CONT)
S303
MEGA BASS
IC701
RV601
R112
C708
C704
C705
C707
R718
R717
R731
R714
R726
R715
R721
R707
R728
C706
Q202
Q600
R730
R709
R704
R701
R724
R705
IC703
C711
R740
R741
C111
R702
X701
Q601
S701
D713
R729
FB101
R114
R723
R727
R708
R732
R716
1
12
13
24
25
36
37
48
R302
R706
R338
R722
C331
Q101
Q602
R733
R213
R303
FB301
R212
R301
R742
FB201
R337
R214
R113
D701
Q301
R713
S705
REW
Q201
R710
Q102
R336
R725
D702
C701
R700
L701
C702
IC702
IC704
S703
CN101
S702
C709
C211
RB601
Q603
BT401
RV301
J301
L
FWD
R
L
REV
R
HP601
PLAYBACK
HEAD
ON
OFF
t
B
HOLD
W
V
U
COM
M601
CAPSTAN/REEL
MOTOR
FF
FWD
t
RVS
REW
t
t
ON OFF
t
ON
OFF
t
S302
AVLS
x
B
B
B
B
DIRECTION
i
C323
R610
R605
R611
S301
(TAPE SW)
C608
R209
PH751
R207
C106
C201
C103
R751
R208
C110
R720
R305
R211
C322
R107
C610
R603
R110
1
15
16
30
C108
C107
R204
C310
R109
Q302
R311
C109
C207
C104
C308
C203
R206
C330
C312
R755
R210
R106
Q703
Q303
C304
IC301
C306
C208
C316
R111
R203
C325
R103
C210
R306
R330
C301
R104
R108
R609
C101
R105
C204
C324
Q305
BEB
C C
C305
R333
C307
C209
R331
C206
R205
C601
IC601
C605
R602
C604
C602
R604
C603
TH601
Q604
C309
R601
Q751
C606
1
10
11
20
R752
R310
C607
RB102
RB101
C311
C100
1
2
3
5
4
N
VOL
1
1
3
3
4
4
5
5
TP52
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
1PC, 1.5V
2
3
4
5
6
7
8
9
10
A
1
B
C
D
E
F
G
5-2. PRINTED WIRING BOARDS
Ref. No.
Location
z
Semiconductor
Location
D701
D-9
D702
F-8
D711
E-6
D713
B-9
IC301
C-2
IC601
F-2
IC701
E-7
IC702
F-7
IC703
F-7
IC704
F-7
PH751
D-2
Q101
D-6
Q102
D-6
Q201
D-6
Q202
D-6
Q301
D-6
Q302
B-1
Q303
B-3
Q305
D-2
Q600
E-9
Q601
E-9
Q602
E-9
Q603
E-8
Q604
F-2
Q703
B-1
Q751
E-2
z
See page 12 for Notes.
