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P
Q
RXD-M37
Q Q
3 7 6 3 1 5 1 5 0
1
DISPLAY
+5.6V
+5V
2
81
LCD15
SEG10
82
LCD14
SEG9
83
LCD13
SEG8
84
LCD12
SEG7
85
LCD11
SEG6
86
LCD10
SEG5
87
LCD09
SEG4
88
LCD08
SEG3
89
LCD07
SEG2
90
3
LCD06
SEG1
91
LCD05
SEG0
92
LCD04
COM3
93
LCD03
COM2
94
LCD02
COM1
95
LCD01
COM0
96
CN103
VLC
R143 1K
97
PDA
1
PLL DATA
MAIN
R144 1K
98
PCLK
2
PLL CLK
CN260
R145 1K
99
PERI
3
PLL PER100
2/3
T E
L
1 3 9 4 2 2 9 6 5 1 3
L101
ST
4
43
100
VDD1
RDA
5
42
47uH
M - 4
RCLK
6
26
4
X101
7.2MHz
X102
32.768
kHz
C103
R102
Q101
10u16
3.3K
+
5
D102
+B
+5V
+12V
D101
6
1
2
3
4
5
6
7 8 9
1
2
CN101
CN102
w w w
MAIN
MAIN
CN601
CN804
M - 7
2/3
2/3
M - 5
7
The DC voltage is an actual reading measured with a high impedance type voltmeter with a cassette loaded at playback mode.
The measurement value may vary depending on the measuring instruments used or on the product. Bias circuit DC voltage is
15
measured while in the record mode.
R
S
COM/PIN #
1
2
COM-0
COM0
COM1
COM-1
COM2
COM-2
COM-3
PWR DETECT
U101
R114
+B
4.7K
+B
R147 10K
+12V
19
Q105
Q103
R118
R125
100K
100K
Q104
Q106
3
1 2
3 4 5
6 7 8
CN109
to IC WRITER
x
a o
.
i
T
U
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1F
1A
1B
2F
2A
2B
3F
3A
3B
1H
1I
1J
2H
2I
2J
3H
3I
3J
1G
1N
1K
1C
2G
2N
2K
2C
3G
3N
3K
3C
COM3
1E
1M
1L
1D
2E
2M
2L
2D
3E
3M
3L
3D
LCD101
+5.6V
+5V
1
+5V
50
VSS2
49
BOOT
R140 22
R141
48
VAREF
47
10K
AD K1
R139
46
10K
AD K2
45
R137
L.V. DET
R136 1K
10K
44
43
STAREO
43
42
RDS DATA
42
41
OVERLOAD
40
CLT(SLEND)
39
SLT
39
38
CN107
MOTOR OP
5.6V
37
1
MOTOR CL
5V
36
2
BUS3
36
35
BUS2
35
Q
Q
34
3
7
GND
BUS1
34
3
33
B L
BUCO
33
4
32
REM
BUCK
32
5
31
CCE
31
CN108
AD-K1
45
1
AD-K2
2
KGND
3
+B
C115
0.01
R128 10K
R129 10K
R130 10K
R131 10K
R107
10K
R132 10K
R133 10K
R134 10K
C116
0.01
8
7
6
5
4
3
2
1
10 9 8 7 6 5 4 3 2 1
CN104
CN105
CD ASSY
u 1 6 3
CN705
y
1/3
E - 1
DOLBY and the double-D symbol are trademarks of Dolby Laboratories
Licensing Corporation. Noise reduction circuit made under license from Dolby
16
Laboratories Licensing Corporation.
V
W
2
4
8
9
9
17
18
19
20
21
22
23
24
25
26
27
28
29
30
4F
4A
4B
5F
5A
5B
6F
6A
6B
7F
4H
4I
4J
5H
5I
5J
COL
6H
6I
6J
7H
4G
4N
4K
4C
5G
5N
5K
5C
6G
6N
6K
6C
7G
4E
4M
4L
4D
5E
5M
5L
5D
6E
6M
6L
6D
P( )
7E
COL
8
P
FRONT KEY
Q182
+5.6V
R186
CN110
100K
U102
R180
1
10
2
+5V
IN
OUT
Q180
R182
GND
10K
6
3
1
5
1
5
0
8
9
Q181
3
4
5
R150
R151
R152
R153
R154
470
680
3.3K
3K
6.8K
SW100
SW101
SW102
SW103
CD
TUNER
TAPE
REC
/BAND
R161
R162
R163 R164
R165
R166
CN111
470
1.5K
1K
2.7K
3.9K
2.7K
1
SW107
SW108
SW109
SW110
2
POWER
TIMER
TIME
PLAY/
ON/OFF
SET
PAUSE
3
CASSETTE DECK
(W991S-337)
1
TAPE TOUCH SW.
2
H-VCC
SW114
3
EQ/
H-OUT
BASS
4
COM
5
SOLENOID
TOP KEY
6
MODE SW.
7
REC. SW.
U101
: 87EP26F-4K76
8
U102
: RPM6938-V4
M
MOTOR+
Q101,180,181 : 9014
m
Q103,105,182 : 8550D
Q104,106
: 9013G
D101-105
: 1N4148
c o
GND LINE
+B
.
B
X
Y
2
8
9
9
31
32
33
34
35
36
37
38
39
40
7A
7B
8F
8A
8B
ROCK
7I
7J
8H
8I
8J
CLASSIC
7N
7K
7C
8G
8N
8K
8C
POP
7M
7L
7D
8E
8M
8L
8D
JAZZ
A
H
F
I
J B
G
K
E
N
M
L C
D
2
4
9
8
2
9
9
R155
R156
R157
R158
R159
7.5K
8.2K
15K
27K
82K
SW104
SW105
SW106
RDS/
SKIP-/
VOL-
DISPLAY
SEARCH-
R167
R168
R169
R170
R171
R172
3.9K
5.6K
8.2K
15K
27K
82K
SW111
SW112
SW113
STOP
SKIP+/
VOL+
SEARCH+
6 5 4 3 2
1
CN112
CN113
6 5 4 3 2
1
SW115
SW116
SW117
SW118
REPEAT
PROG.
PRESET
PRESET
DOWN
UP
HM-337(3/3)
CAUTION: For continued safety, replace
safety critical components only with manu-
facturer's recommended parts (refer to
parts list).
indicates safety critical com-
ponents. For continued pro-
tection against risk of fire, replace only with
same type and rating fuse(s). To reduce
the risk of electric shock, leakage-current
B LINE
or resistance measurements shall be car-
B LINE
ried out (exposed parts are acceptably
insulated from the supply circuit) before the
appliance is returned to the customer.
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