Read Sony ICF-C773 / ICF-C773L Service Manual online
ICF-C773/C773L
12
12
ICF-C773/C773L
4-2. SCHEMATIC DIAGRAM – MAIN BOARD (US/CND, IT) (1/2) –
• See page 21 for IC Block Diagram.
C37
R5
R4
R6
IC1
BPF1
CF1
CF2
T1
R19
R18
C34
C35
C42
C39
TP1
C33
R133
R14
CT1
L1
C16
R3
C46
C26
C27
R17
R11
R13
C21
CT2
C8
C7
C20
R10
L2
C18
R9
C17
C4
C30
R12
L3
C102
C142
R134
R135
R101
C128
C129
C130
C131
R122
C132
R123
R125
R124
C134
CN103
CN101
Q4
Q5
Q101
Q102
Q103
Q104
D3
D4
D101
D102
CF3
C43
R20
Q3
D103
R16
C6
R15
C40
C41
C28
C25
C5
JC4
JC101
JC6
C36
C29
JC3
R22
JC5
D6
C45
C44
C47
0.022
2.2M
100k
100k
CXA1019M
220
2.2k
0.01
4.7
50V
1
0.047
100p
100k
1k
1000p
2.2k
100p
0.01
0.1
1k
100k
220k
0.01
5p
10p
5p
22k
82nH
10p
4.7k
1000p
0.047
1
470
0.1
1000
6.3V
470k
470k
47
1000p
470p
0.1
0.22
10k
0.01
10k
100k
2.2k
220
25V
25V
3P
7P
2SA1602-F
MUTE
SWITCH
DTC144EUA
BAND SELECT
SWITCH
2SC4154-F
L.P.F
2SC4154-F
L.P.F
DTC124EUA-T106
CE SWITCH
2SA1602-F
CE SWITCH
HVU202ATRU
HVU202ATRU
1SS355TE-17
1SS355TE-17
470
10V
10V
0
2SC3931-C
RF BUFFER
RF BUFFER
RD5.1ESB2
47
220p
0
22
63V
1
0.1
47
35V
220p
0
0
0
10
50V
4.7
50V
0
0
0
SVC347S-TL-E
0.0022
220
10V
10V
1
VDD
BUS
GND
L CONT
CE
LED+B
LIGHT3
BAND1
EQ
VCOH
NF
VCOL
MUTE
FM
TRACKING
ANTENNA
FERRITE-BAR
TRACKING
TP
(VT)
FREQUENCY
COVERAGE
SPEAKER
SP1
BOARD
POWER
L4
CT2,L4
L3
T1
+B
LED+B
LED+B
VT
ANT
ANT
L CONT
LIGHT3
LIGHT3
GND
BOARD
REG
VOL
VOL
GND
BOARD
MAIN
(2/2)
KEY(R)
CT1,L1
AM
AM
AM IF
AM
(Page17)
(Page13)
(Page19)
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