Read Sony CFD-W57 (serv.man2) Service Manual online
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1. PRINTED WIRING BOARD — TUNER SECTION — (US Model)
CFD-W57
– 5 –
– 6 –
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.
•
U
: B+ Line.
• 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 on Printed Wiring Boards:
• X
: parts extracted from the component side.
•
W
: indicates side identified with part number.
•
f
: internal component.
• b
: Pattern from the side which enables seeing.
Ref. No.
Location
D1
E-3
D2
E-3
D3
G-6
D10
H-3
D11
H-3
D12
C-3
D15
C-2
IC1
D-4
IC2
D-6
Q10
E-4
Q11
F-5
Q12
E-4
Q13
D-5
Q15
B-5
Q16
B-4
Q18
A-4
Q19
A-5
Q60
E-6
Q61
F-6
Q80
C-6
• Semiconductor
Location
(Page 19)
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