DOWNLOAD Sony CFD-W57 (serv.man2) Service Manual ↓ Size: 9.55 MB | Pages: 22 in PDF or view online for FREE

Model
CFD-W57 (serv.man2)
Pages
22
Size
9.55 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / SUPPLEMENT-
File
cfd-w57-sm2.pdf
Date
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CFD-W57
2. SCHEMATIC DIAGRAM — TUNER SECTION — (US Model)
– 7 –
– 8 –
(Page 25)
1
A
B
C
D
E
F
G
H
2
3
4
5
6
7
3. PRINTED WIRING BOARD — TUNER SECTION — (E Model)
CFD-W57
– 9 –
– 10 –
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  pF: µµF
50 WV or less are not indicated except for electrolytics
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
(
) : AM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
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
F-2
D2
E-2
D3
G-3
D5
H-3
D6
H-3
IC1
D-3
IC2
D-6
Q1
F-4
Q2
F-5
Q3
E-5
Q4
E-6
Q5
B-6
Q6
B-2
Q7
F-6
Q8
C-6
Q9
G-6
Q10
B-5
Q11
B-4
Q12
G-6
• Semiconductor
Location
(Page 22)
CFD-W57
4. SCHEMATIC DIAGRAM — TUNER SECTION — (E Model)
– 11 –
– 12 –
(Page 25)
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
CN703
1
5
L762
LOADING  BOARD
S702
(OPEN)
M703
LOADING
MOTOR
S703
(CLOSE)
C777
1-656-254-
L761
M
+
5. PRINTED WIRING BOARD — CD SECTION —
CFD-W57
– 13 –
– 14 –
Ref. No.
Location
D790
C-5
IC701
G-5
IC702
B-4
IC703
F-8
Q701
E-7
• Semiconductor
Location
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted.  pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
Ω
 and 
1
/
4
 
W or less unless otherwise
specified.
•
U
: B+ Line.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : CD STOP
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD
Note: The components identified by mark 
0
 or dotted line
with mark 
0
 are critical for safety.
Replace only with part number specified.
• Waveforms
(MODE:PLAY)
1
2
3
4
5
Approx. 100mVp-p
IC701  
rj
  (TEI)
2.5V
IC701  
ed
  (RFO)
1.3±0.5Vp-p
Approx. 200mVp-p
IC701  
1
  (FEO)
2.5V
IC704  
wa
  (MDP)
2Vp-p
7.6
µ
sec
16.9344MHz
IC704  
ua
  (XTAO)
2.2Vp-p
(Page 19,
22)
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