Read Sony CFD-W57L (serv.man2) Service Manual online
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1. PRINTED WIRING BOARD — TUNER SECTION —
CFD-W57L
– 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
(
) : MW
<
> : MW/LW
[
] : LW
• 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
L
: MW
• Abbreviation
G
: German model.
IT
: Italian model.
EE
: East European model.
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.
•
Abbreviation
G
G
: German model.
IT
: Italian model.
EE
: East European model.
(Page 15)
Ref. No.
Location
D1
H-3
D2
H-3
D3
E-2
D4
D-3
D5
G-3
IC1
D-3
IC2
D-6
Q1
G-2
Q2
F-4
Q3
H-3
Q4
F-5
Q5
H-3
Q6
F-3
Q9
E-4
Q10
F-4
Q11
D-5
Q12
E-4
Q13
B-6
Q14
B-7
Q15
B-5
Q16
B-4
Q17
E-5
Q18
F-5
Q19
F-6
Q21
G-5
Q22
H-4
Q23
B-2
• Semiconductor
Location
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