Read Sony CFD-W57L (serv.man2) Service Manual online
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
+
3. PRINTED WIRING BOARD — CD SECTION —
CFD-W57L
– 9 –
– 10 –
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
• 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.
•
U
: B+ Line.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : CD STOP
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.
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.
• Signal path.
• 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.
(Page 15)
• 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
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