VDD
VSS
62
LF2C2
LF2C1
LF1C3
2
1
LF1C1
5
4
3
LF1C2
64
LTIN
LSELO
63
LF5
LF4C3
LF4C2
LF4C1
LF3C3
LF3C2
LF3C1
LF2C3
9
8
7
6
13
12
11
10
L/AUX
LINVIN1
61
L/CD
60
59
L/TUNER
L/MD
58
L/TAPE
57
56
19
LFOUT
LFCOM
L
T
OUT
16
15
14
LFIN
17
18
LVREF
VREF
S.CL
S.DI
S.CE
20
21
22
23
24
25
38
39
40
41
42
43
44
45
46
47
48
49
R/CD
54
R/TAPE
55
R/TUNER
53
R/AUX
52
51
RINVIN1
LSELO
50
RT
IN
RF2C1
RF1C3
RF1C2
RF1C1
RF3C2
RF3C1
RF2C3
RF2C2
RF4C3
RF4C2
RF4C1
RF3C3
36
37
32
RVREF
RFOUT
RFCOM
27
26
28
29
30
31
RFIN
RTO
U
T
RF5
34
35
33
OUT(L)
A.GND
OUT(R)
AGND
AMUTE
PWRO7
A+12V
OP/CL
CD+8V
u+5.6V
D+12V
M.GND
CDGND
VFL
FLAC
FLAC
F.OFF
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
PHOTO
20
A/B.1
A/B.2
R.REC
PACK
F.REC
PLAY
19
18
17
16
15
14
SOL
CMP
13
12
+12V
M.GND
D+12V
B.1/2
11
BIAS
10
9
8
LIN
+5V
7
6
RIN
5
4
ROUT
LOUT
A.GND
3
2
1
2
3
4
66
74
76
67
65
68
97
73
71
70
69
55
57
4.7K
R301A
100P
C355A
8.2K
R303A
10u16
C313
+
R309A 3.3K
0.047
C317
4.7u50
C315
+
7.5K
R307A
R305A
7.5K
4.7u50
C333
+
0.47u50
C323
+
0.47u50
C319
+
2200P
C329
0.056
C327
0.027
C325
0.056
C321
C331
0.01
4.7u50
C334
+
0.47u50
C324
+
0.47u50
C320
+
0.01
C336
+
2200P
C330
0.056
C328
0.027
C326
0.056
C322
R302A
4.7K
R306A
7.5K
4.7u50
C316
+
0.047
C318
3.3K
R310A
7.5K
R308A
C314 10u16
+
R304A
8.2K
10u16
C332
C338 10u16
+
4.7K
R331A
4.7K
R332A
220K
R326A
220K
R327A
R328A 1K
R325A 1K
C339 10u16
+
+
C337 10u16
C335 10u16
+
1
100
80
10u16
C341
+
C354A 470P
R312 1K
R313 1K
C353A 100P
R311 1K
C349A 100P
+
C340 10u16
+
C347 22u16
+
C342 10u16
C343A
100P
47K
R428A
R429A
47K
47K
R401
47K
R402
42
40
37
33
31
36
35
R407A 47K
R412A 47K
R413A 47K
R414A 47K
R425A 47K
100u10
C408
+
31
51
7
8
9
10
11
12
13
14
15
16
6
5
4
3
2
1
33
61
4
3
2
91
90
58
89
54
57
53
18
60
56
55
59
100u16
C348
+
R314
56
10K
R334A
57
55
R421A
10K
1K
R426A
100K
R422A
1u50
C409
+
100
R434A
47K
R404A
KEY3
KEY2
KEY1
LED2
LED3
ENC1
ENC2
REM
u+5V
u.GND
+5V
OP/CL
LED4
LED5
LED0
LED1
KEY1
KEY2
KEY3
VREF
FLDI
FLRST
FLCE
FLCL
FLAC
FLAC
FLAC
VFL
+5V
u.GND
FLAC
C304 10u16
+
+
C301 1u50
+
C305 1u50
+
C309 4.7u50
C302 4.7u50
+
3
1
2
R433A
10K
0.01
C410A
1K
R431A
470u10
C407
+
+
C306 1u50
+
C303 10u16
C310 1u50
+
52
60
51
18
61
59
53
4.7u50
C345
+
4.7u50
C346
+
100P
C312A
+8V
+8V
+8V
+8V
+8V
+8V
R/MD
10
15 14 13 12 11
6
9
8
7
1
2
3
4
5
100P
C413A
100P
C31
1
A
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+12V
+5V
+5V
+5.6V
+5V
+5V
+5V
+12V
+5V
+5V
+5V
+12V
+12V
+5V
+5V
+5V
+5.6V
+5V
+5.6V
+12V
+5V
+5V
+5V
+5V
+B
+5V
+5V
+5V
+5V
+B
+5.6V
+12V
+5V
+12V
+5.6V
+12V
+5.6V
+12V
IC301
IC402
RXD-M31MD(E) (2/5)
B
C
F
G
CN405
CN404
Q306
Q305
SW401
CN402
CN401
Q302
D408
Q401
D407
D404
D406
MAIN VOL.
INPUT SEL.
TONE
SURROUND
TAPE
MUTE
RESET
IC
RESET
-CN601
BOARD
3/5
3/5
BOARD
-CN701
POWER
CASSETTE
F
G
4/5
BOARD
-CN1001/1002
KEY
5/5
BOARD
-CN801
DISPLAY
ATT.
5.0V
5.0V
5.0V
4.8V
4.8V
4.8V
4.8V
4.5V
4.8V
4.7V
4.5V
4.8V
4.7V
4.5V
4.8V
4.7V
4.5V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.8V
4.5V
4.8V
4.7V
4.5V
4.8V
4.7V
4.5V
4.8V
4.7V
4.5V
4.8V
4.7V
4.7V
4.8V
4.8V
4.8V
4.8V
9.6V
4.8V
15.9V
5.6V
7.7V
11.9V
11.9V
4.8V
+5V
+5V
81
35
36
18
+
C307 10u16
+
C308 10u16
R356 3.3K
R335 3.3K
47u16
C350
+
D403
D405
+5V
+5V
+5V
+5V
5.0V
+5V
CE
14
PRTMD
13
12
A.GND
MDRST
UART2
u.GND
11
UART1
10
9
8
LIN
A.GND
7
6
RIN
5
4
ROUT
LOUT
CD GND
DOUT
A.GND
3
2
1
E
CN403
CN203
CN301
JK302
3/5
2
1
D
(M) TYPE
ONLY
3/5
BOARD
-CN504
MD CONTROL
BOARD
-CN501
MD CONTROL
2
1
1
2
3
MAIN BOARD
AO
AP
AR
AT
AV
AX
AQ
AS
AU
AW
RXD-M31MD
Y39-3212-70
2SB764
2SC1923-O
RN1406
RN2404
LA6458S
BA3126N
HA12219NT
TC74HCT7007AF
CXA1571M
LC72131
NJM431U
LC75710NE
CXD2587Q
LA1837
LC75396NE
16
17
32
1
BA5979S
CAUTION: For continued safety, replace safety critical com-
ponents only with manufacturer's recommended parts (refer
to parts list).
indicates safety critical components. For
continued protection against risk of fire, replace only with
same type and rating fuse(s). To reduce the risk of electric
shock, leakage-current or resistance measurements shall
be carried out (exposed parts are acceptably insulated from
the supply circuit) before the appliance is returned to the
customer.
The DC voltage is an actual reading measured with a high
impedance type voltmeter with no signal input. The mea-
surement value may vary depending on the measuring
instruments used or on the product.
The DC voltage is an actual reading measured with a high
impedance type voltmeter as the AM/FM signal generator is
specified to the conditions as shown in the list below. The
measurement value may vary depending on the measuring
instruments used or on the product. The value shown in ( )
is actual reading measured in the AM mode.
MODE
CARRIER
MODULATION
ANT INPUT
FREQUENCY
DEVIATION
FM
98MHz
1kHz
STEREO 67.5kHz 7.5kHz(Pilot)
60dB
AM
1000(999)kHz
400Hz
MONO 30% MOD
60dB
