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2-2. PRINTED WIRING BOARD — MAIN BOARD — ((Page 32))
PMC-20
Comon Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
•
U
: B+ Line.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
no mark : FM
(
) : AM / TAPE PB
<
> : TAPE REC
[
] : CD
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
f
: AM
E
: PB
a
: REC
J
: CD
Comon Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
f
: internal component.
•
b
: Pattern from the side which enables seeing.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Q9
E-5
Q10
D-4
Q11
C-9
Q12
C-10
Q13
D-6
Q14
D-6
Q15
C-6
Q20
B-6
Q301
J-8
Q302
I-9
Q303
I-9
Q304
E-9
Q305
E-9
Q306
G-6
Q307
F-7
Q308
I-5
Q309
I-4
Q310
J-5
Q311
I-5
Q312
I-5
Q313
E-4
Q314
F-4
Q315
H-9
Q316
I-9
Q317
E-8
Ref. No.
Location
D1
B-4
D2
B-3
D4
C-7
D5
C-4
D6
B-4
D7
B-3
D8
E-5
D301
F-3
D302
E-4
D303
F-7
D304
I-5
D305
H-10
D306
I-4
D307
J-3
D308
H-9
IC1
C-5
IC2
D-8
IC301
H-7
IC302
F-8
IC303
G-5
Q1
B-5
Q2
C-8
Q7
D-5
Q8
D-5
• Semiconductor Location
Ref. No.
Location
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
Q305
Q304
R324
R329
Q317
IC302
CONTROL
BOARD
CNP801
3
REC SW
BOARD
CNP801
S301
(MD POWER)
S302
(MD PLAY)
RED
BLK
BLU
BLU
BLU
BRN
BRN
BRN
M301
(CAPSTAN/REEL)
HRP301
RECORD/PLAYBACK
HEAD
POWER
BOARD
CNP901
CD BOARD
CNP704
SP301
SPEAKER
L-CCH
SP302
SPEAKER
R-CCH
1
H.P BOARD
CNP704
FM
AM
CNP1
FM
LEAD
ANTENNA
AM
LOOP
ANTENNA
MAIN BOARD
D1
D2
D7
R54
C1
1
C17
R15
C25
C65
D6
C10
CT2
R10
L2
C76
C18
C16
C21
C22
C23
CF4
C19
C20
C344
C216
C116
C114
C320
R115
R332
C219
J301
D301
R1
17
C1
19
C1
18
R345
R1
16
L302
R109
C113
R330
Q313
Q314
D302
C343
C329
Q10
Q7
Q8
Q9
Q14
Q13
D8
R35
R46
C43
C42
R47
R48
JW73
JW30
JW34
JW34
JW62
JW8
JW78
JW47
JW89
JW96
JW50
JW6
JW35
JW2
JW77
JW51
JW88
JW19
JW42
JW41
JW39
JW38
Q306
Q307
R308
R342
R21
1
C208
C209
C109
C
111
C1
10
C326
C327
R107
C339
JW84
JW55
JW68
R336
R323
R207
R338
C331
C330
R322
C108
C210
D303
R216
R215
C342
IC303
JW3
R217
C1
17
C1
15
C218
C360
R340
C312
C310
Q31
1
Q312
R333
R334
R341
C313
D304
C217
C319
C318
C215
C333
C214
JW101
JW58
JW59
JW45
JW57
C44
C45
C336
C338
C7
C13
D5
CNP1
L9
S
C41
JW43
C6
CT4
IC1
C72
C73
R9
L6
Q1
R5
L12
C5
C31
L7
C14
C14
R1
C8
C4
R36
R42
C2
Q15
L13
C24
R43
L1
C64
C64
C61
JW92
JW26
JW4
JW83
JW81
JW108
JW63
R209
R210
C212
C1
12
R1
10
C213
R14
JW53
JW102
JW67
JW98
C306
R33
R28
R22
R30
R3
R26
L8
C38
C36
C40
C30
C33
C51
C53
IC2
Q11
Q12
JW80
JW99
JW95
X1
C52
C28
C27
R17
R18
R19
R20
R29
R32
R31
C74
C56
C34
L3
Q2
C46
C3
S
S
C37
C39
C9
JW79
JW74
JW44
JW105
C58
CFT1
R44
Q20
CF1
C59
R41
R39
R40
R38
R13
C15
C26
CF2
CF3
R16
R53
R25
D4
L5
C1
C12
R12
C35
R27
C29
R34
JW87
JW103
JW28
JW12
R45
R37
R337
R108
JW52
JW60
JW65
CNP305
(CHASSIS)
1
3
BLK
BLK
WHT
WHT
R335
R204
C204
R202
R105
R101
C201
C101
C103
C334
JW22
JW54
JW18
C335
C332
R102
R103
C346
C325
C303
C106
C206
C205
C341
C302
R325
R1
12
R1
13
R1
14
R212
R213
R214
R301
R321
R327
R326
JW23
JW86
JW16
JW71
JW37
JW40
JW31
JW5
JW100
JW1
JW61
JW64
JW27
JW29
JW49
C324
C328
R306
R305
R343
C104
R205
BLU
RED
YEL
WHT
BLK
WHT
BLK
BLK
R203
C203
C202
C347
R201
C340
CNP301
CNP302
C102
C311
C317
JW10
JW7
JW90
JW9
JW17
JW11
JW82
T301
C301
C304
C337
1-670-854-
C305
R307
R104
R303
C105
R111
R302
C308
R309
R304
D308
D305
JW20
JW24
11
(11)
JW76
JW36
IC301
1
4
1
4
Q301
Q316
Q315
JW94
JW32
Q302
Q303
C345
BRN
BRN
BLU
BLU
BLU
RED
BLK
RED
BLK
1
6
CNP306
1
12
13
24
BLK
BLK
BLK
BLK
WHT
JW85
C207
C316
CNP303
C315
JW25
JW46
JW48
JW15
JW107
JW106
JW70
JW97
JW33
C107
JW72
JW75
JW56
JW13
C348
R339
C323
C321
JW69
JW21
R208
C211
C309
1
7
CNP304
1
1
22
23
16
32
17
2
JW93
C307
JW109
32
17
1
16
TU1
1
4
5
8
JW104
JW66
1
24
12
13
R
R
L
L
CNP307
5
1
D306
C314
D307
04
Q310
Q308
Q309
WHT
BLK
BLK
BLK
BLK
BLK
BLK
BLK
R
R
L
L
C75
((Page 28))
((Page 33))
((Page 34))
((Page 34))
((Page 40))
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