Sony ICF-SW07 Service Manual ▷ View online
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– 50 –
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ICF-SW07
Note:
• X
: parts extracted from the component side.
•
r
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from the
(Side A)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side B)
parts face are indicated.
5-5. PRINTED WIRING BOARDS (KEY SECTION)
Ref. No.
Location
r
Semiconductor
Location
IC801
G-12
Q801
G-12
Q802
G-12
5-6. SCHEMATIC DIAGRAM (KEY SECTION)
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.
•
U
: B+ Line.
• Power voltage is dc 3V and fed with regulated dc power
supply from external power voltage jack.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : SW
no mark : SW
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• The voltage isn't filled in the measurement impossibility
place.
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ICF-SW07
5-7. PRINTED WIRING BOARDS (MICROCOMPUTER SECTION)
Ref. No.
Location
r
Semiconductor
Location
D501
C-2
D502
D-3
D503
D-3
D504
D-2
D505
D-2
D506
B-2
D507
C-2
IC501
B-3
IC502
C-5
IC503
B-5
IC504
C-2
IC505
B-2
IC506
D-2
IC507
C-3
IC508
D-3
Q501
C-4
Q502
C-4
Q503
C-4
Q504
C-3
Q505
C-3
Q506
C-3
Q507
D-2
Q508
D-2
Note:
• X
: parts extracted from the component side.
•
r
: Through hole.
• b
: Pattern of the rear side.
• b
: Pattern on the side which is seen.
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.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
no mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• The voltage isn't filled in the measurement impossibility
• The voltage isn't filled in the measurement impossibility
place.
1
X502
VOLT/DIV : 0.2 V AC
TIME/DIV : 10
TIME/DIV : 10
µ
sec
732 mVp-p
32.768 kHz
r
Waveform
5-8. SCHEMATIC DIAGRAM (MICROCOMPUTER SECTION)
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