Sony CFD ZW755 - Portable CD / Cassette, Руководство по обслуживанию

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5-8. SCHEMATIC DIAGRAM (CD SECTION)
CFD-ZW755
z
Refer to page 42 – 43 for IC Block Diagrams.
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
Note: The components identified by mark 0 or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
•
U
: B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : STOP
(
) : PLAY
• 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
1
IC701 ed
(RFO)
2
3
4
5
6
VOLT/DIV : 0.5 V AC
TIME/DIV : 1
µ
sec
IC701
6
(FEO)
IC701 rg
(TEO)
IC703
wl
(PCO)
IC703
el
,
r;
(LRCK)
IC703 ua
(XTAO)
VOLT/DIV : 1 V AC
TIME/DIV : 1 msec
VOLT/DIV : 20mV AC
TIME/DIV : 1 msec
VOLT/DIV : 0.5 V AC
TIME/DIV : 5
µ
sec
VOLT/DIV : 1 V AC
TIME/DIV : 5
µ
sec
VOLT/DIV : 0.5V AC
TIME/DIV : 20 nsec
(PLAY MODE)
(PLAY MODE)
(PLAY MODE)
0.9 – 1.5Vp-p
0.6Vp-p
0.7Vp-p
1.6Vp-p
0.1162MHz
8.6
µ
sec
5Vp-p
22.85
µ
sec
2.3Vp-p
16.9344MHz
r
Waveforms (CD SECTION)