Sony ICF-704S Service Manual ▷ View online
9
9
ICF-704S
SECTION 4
DIAGRAMS
4-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
A
: B+ Line.
•
H
: adjustment for repair.
• Total current is measured with power on.
• Power voltage is dc 6V and fed with regulated dc power
• Power voltage is dc 6V and fed with regulated dc power
supply from battery terminal.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
) : MW
• 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
: MW
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Q
C
These are omitted
E
B
10
10
ICF-704S
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
14
A
C11
CT2
CT3
BLK
ANT1
FM/SW TELESCOPIC
ANTENNA
BRN
RED
CV1
JC1
C10
R3
JW5
JW6
JW14
JW4
R7
C2
C8
C9
C4
C5
C6
R1
C15
CV1-4
CT1-4
(FM OSC)
CT1-4
(FM OSC)
CV1-3
L4
AM FERRITE ROD
BAR ANTENNA
CT1-3
(FM RF)
(FM RF)
CV1-1
CT1-1
(AM RF)
CT1-1
(AM RF)
CV1-2
CT1-2
CT1-2
(AM OSC)
L3
C13
C12
C17
C16
R8
RV1
S1
(BAND)
SW
MW
FM
VOL
RV2
TONE
CV1
TUNING
D2
TUNE
RV1
L5
L7
RV2
C39
R12
J1
R10
W2
SP1
SPEAKER
SP+
LED
METER
LED+B
+B
GND
RED
BLK
D2
SP-
GRY
RED
RED
1
2
R5
C23
C22
C27
C24
CF4
C26
JW13
C35
C36
CF1
C31
B C E
Q3
Q4
D1
BP1
T1
CF3
CF2
Q2
B C E
Q1
B C E
B C E
JW9
JW8
C32
C30
IC1
BPF1
S1
S1-6
S1-5
S1-4
S1-3
S1-2
S1-1
1
3
16
30
15
1
CN1
POWER
BOARD
W101
R2
C25
C29
C28
R6
C37
R13
C40
C42
C50
C34
C47
C33
C44
R9
C45
C43
C41
JW16
JW10
JW12
JW11
JW7
JW2
JW3
JW15
C14
C18
JW1
C1
L6
C48
GRY
RED
BRN
BLK
L2
L1
1-861-802-
11
MAIN BOARD
4-2. PRINTED WIRING BOARD — MAIN SECTION —
(Page 11)
D1
A-8
D2
H-3
IC1
D-10
Q1
E-11
Q2
E-12
Q3
E-12
Q4
C-12
• Semiconductor
Location
Ref. No.
Location
11
11
ICF-704S
4-3. PRINTED WIRING BOARDS — POWER SECTION —
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
14
W101
W102
C103
GR
Y
RED
BLK
BLK
GR
Y
RED
RED
BLK
BLK
RED
GR
Y
BLK
RED
BLK
BLK
BLK
GRY
RED
1-861-816-
11
1-861-814-
11
1-861-815-
11
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
4PCS,6V
W102
1
1
2
3
1
3
AC1
AC2
AC1
AC1
W103
S101
S101
OPERATE
ON STANDBY
1
3
1
3
W103
T101
J101
~ AC IN
GRY
BLK
C101
R101
D101
D102
C102
POWER BOARD
AC INLET BOARD
SWITCH
BOARD
BOARD
A
MAIN
BOARD
CN1
(Page 10)
12
12
ICF-704S
CF3
CF2
IC1
CF4
RV1
T1
CF1
RV2
SP1
BPF1
R2
CV1-3
CT1-3
C2
L4
CT1-1
C8
C9
S1-3
S1-4
CV1-1
JW1
R3
C10
L6
C11
C1
S1-5
C48
JW15
JC1
JW4
JW14
ANT1
D1
BP1
JW5
C24
S1-2
JW7
JW13
R8
C27
C25
C26
L3
CV1-4
CT1-4
C4
C5
C6
R1
JW2
CV1-2
S1-1
C18
C12
C13
C14
C15
C17
C16
CT1-2
L5
JW3
R5
C23
C22
CT3
L7
R6
R7
JW6
JW9
S1-6
Q4
JW8
Q3
C37
R13
C47
C36
Q1
Q2
C31
C30
C32
C35
C33
C39
JW10
C41
C43
C42
C40
C44
C50
JW12
R10
R9
JW11
T101
C101
D101
D102
C102
C103
S101
R101
J1
C29
L1
L2
C28
D2
JW16
C45
R12
W103
W103
W102
W102
W2
CN1
W101
J101
CT2
4-4. SCHEMATIC DIAGRAM
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