Sony ICF-C630 (serv.man2) Service Manual ▷ View online
9
ICF-C630
Adjustment Location:
L3
L3
L4
L4
CT3
CT3
FM FREQUENCY
COVERGE
ADJ
AM FREQUENCY
COVERGE
ADJ
AM TRACKING
ADJ
T1
AM IF
ADJ
FM TRACKING
ADJ
CT4
CT4
CT1
CT1
CT2
CT2
L2
L2
L1
L1
T1
10
ICF-C630
SECTION 5
DIAGRAMS
1
2
3
4
5
6
7
8
9
10
15
14
13
12
11
FM
DISCRIMINATOR
AF POWER AMP
AM FE
FM IF
TUNING
METER
AM IF DET AGC
FM FE
23
22
21
20
24
25
19
18 17 16
29 28 27 26
30
GND
GND
AF OUT
+B
RIPPLE
FIL
TER
AF IN
DET OUT
AFC (J)AGC
AFC (W)AGC
IF GND
LED
NC
FM IF IN
AM IF IN
BAND SW
NC
MIX OUT
FE GND
AM ANT
FM RF
REG
FM OSC
FM ANT
AFC
AM OSC
VOL
NF
DISCRI
GND
GND
IC1 CXA1019S
5-1. IC BLOCK DIAGRAM
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
BOARDS AND SCHEMATIC DIAGRAMS.
Common 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.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 4.5V and fed with regulated dc power
supply from external power voltage jack.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
no mark : FM
(
) : AM
• 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
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Common Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
ICF-C630
11
11
5-2. BLOCK DIAGRAM
28
9
27
AF POWER
AMP
FM IF
AM IF
FM
DISCRIMINATOR
5
17
18
POWER
SWITCH
Q3,4
+3V
L2
W1
CV1-2
CT2
CV1-3 CT3
CV1-1 CT1
CV1-4 CT4
CT2,L2
FM
TRACKING
L3
L1
L4
CT3,L3
FM
FREQUENCY
COVERAGE
CT4,L4
AM
FREQUENCY
COVERAGE
CT1,L1
AM
TRACKING
AM
FERRITE-ROD
ANTENNA
CV1
TUNE
T1
AM IF
FM FRONT
-END
AM FRONT
-END
IC1
FM/AM
FRONT-END
IF AMP,DET
FM ANT
FM RF
BAND
AVDD
VDD
RESET
VDET1
VDET2
VDET3
AC/DC
P25
P24
P23
P24
P23
KR3
KR2
KR2
KR1
KR0
KR0
FM OSC
AM ANT
AM OSC
VREG
13
10
15
8
6
MIX OUT
CF2
CF3
T1
FM
IF IN
IF IN
AF IN
AF OUT
POWER
BUZZER
MUTING
LIGHT1
LIGHT2
LIGHT3
XT1
XT2
X1
X2
COM0
I
COM3
S0
I
S24
NF
+B
DET OUT
AM
IF IN
IF IN
DISCRI
VOL
CF1
FM DISCRI
VREG
Q1
RV1
VOL
SP1
SPEAKER
REG
FM
LEAD WIRE
ANTENNA
3
• Signal path
: FM
: AM
4
24
25
67
78
51
66
6
I
34
65
38
68
72
76
48
79
80
X101
32.768kHz
D101-103
(LCD BACK LIGHT)
X102
4.19MHz
70
71
74
75
+3V
IC106
RESET
IC102
2.3V REG
IC101
2.2V REG
49
IC103
2.1V REG
50
IC104
1.9V REG
S101-S110
KEY MATRIX
LCD101
LIQUID CRYSTAL
DISPLAY PANEL
3V REG
Q5
Q6
+3V
AC/DC
SWITCH
53
54
55
54
55
61
62
63
64
62
63
64
BAND
SW
Q2
16
BAND SW
IC105
SYSTEM CONTROL,LCD DRIVER
11
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION)
2PCS,3V
J1
DC IN 4.5V
!
IC2
3.8V REG
ICF-C630
12
12
5-3. PRINTED WIRING BOARD — TUNER SECTION — • Refer to page 10 for Common Note on Printed Wiring Boards.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
C35
W1
FM
LEAD WIRE
ANTENNA
CN1
C8
C2
BLK
NA
T
RED
CT1
CT2
CT3
CT4
CV1-4
CV1-1
CV1-2
CV1-3
R6
C29
D1
J1
DC IN 4.5V
!
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
2PCS,3V
D5
C13
C33
R9
R17
R7
R3
IC1
CF2
L3
FM OSC
L2
FM RF
T1
AM IFT
L4
AM
OSC
C4
R5
C34
C12
CN2
C22
C20
C11
C15
C14
L5
C18
R4
R2
JW3
R15
C7
R14
C5
R1
C27
C9
C1
C6
C10
R12
C19
C21
C36
C30
JC2
C16
CF3
C17
R8
Q4
C24
C23
R10
R11
E
B
C
Q1
E
B
C
Q6
RED
RED
BLK
GR
Y
E
B
C
IC2
3
1
2
Q3
Q5
E
B
C
Q2
BPF1
CF1
WHT
RED
JW1
B
E
C
RV1 VOL
7
1
A
L1
AM
FERRITE-ROD
ANTENNA
15
1
1
2
16
30
SP1
SPEAKER
TUNER BOARD
1-687-526-
(11)
11
CV1
TUNE
MICROCOMPUTER
BOARD
W101
(Page 13)
D1
C-10
D5
C-10
IC1
F-7
IC2
D-10
Q1
H-10
Q2
D-7
Q3
D-9
Q4
E-10
Q5
D-9
Q6
B-8
• Semiconductor
Location
Ref. No.
Location
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