Schematic Diagram - Sony Discman D-E440 Service Manual
Compact disc compact player
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Also See for Discman D-E440:
- Operating instructions (2 pages) ,
- Operating instructions (3 pages)
Table of Contents
6-4. SCHEMATIC DIAGRAM
r
Refer to page 24 for IC Block Diagrams.
– 19 –
– 20 –
– 21 –
Waveforms
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Note:
SERVICE MODE
1
2
3
• All capacitors are in F unless otherwise noted. pF:
during TRK servo OFF
50 WV or less are not indicated except for electrolytics
and tantalums.
2.6 Vp-p
• All resistors are in
2.6 Vp-p
2.4 Vp-p
specified.
•
¢
Note:
136 sec
22.7 sec
ESP : OFF
4.2 MHz
ESP : OFF
The components identi-
fied by mark ! or dotted par une marque ! sont cri-
IC502 &ª
VOLT/DIV : 1 V AC
IC502 #§
VOLT/DIV : 1 V AC
IC502 ^•
VOLT/DIV : 1 V AC
line with mark ! are cri- tiques pour la sécurité.
TIME/DIV : 0.1 msec
TIME/DIV : 50 sec
TIME/DIV : 10 msec
tical for safety.
Replace only with part
4
5
6
number specified.
• U : B+ Line.
• H : adjustment for repair.
0.2 Vp-p
0.9 Vp-p
• Power voltage is dc 4.5 V and fed with regulated dc power
2.6 Vp-p
supply from external power voltage jack. (J401)
• Voltages and waveforms are dc with respect to ground
4.19MHz
16.9 MHz
under no-signal conditions.
0.47 sec
ESP : OFF
• Voltages and current are taken with a VOM (Input imped-
VOLT/DIV : 0.2 V AC
VOLT/DIV : 1 V AC
IC301 !§
VOLT/DIV : 0.1 V AC
IC801 @º
ance 10 M ).
IC502 &º
TIME/DIV : 0.1 sec
TIME/DIV : 0.2 msec
TIME/DIV : 50 nsec
Voltage variations may be noted due to normal produc-
tion tolerances.
7
PLAY MODE
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
0.8–1.2 Vp-p
J
IC501 @£
VOLT/DIV : 0.2 V AC
TIME/DIV : 0.5 msec
– 22 –
D- E440/E441/E441SR/E443/
E445/E446CK/E449CK
F
and
1
/
4
W or less unless otherwise
: internal component.
Note:
Les composants identifiés
Ne les remplacer que par
une piéce portant le
numéro spécifié.
: CD
– 23 –
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