CD-C471
Playback can only be performed
disc is
l
o
a
d
e
d
.
. .
Is the Focus servo active? (Can you hear it working?)
Yes
No
Check the laser diode driver.
Check the area around
(21) (focus servo circuit).
No
If the disc is not turning, the DRF
should not change to
Check the spin system.
Yes
Yes
Is HF waveform normal (see the Fig.
Yes
Check the tracking system.
H i
(When playing
back the disc)
Waveform is unstable.
Yes
Check the spin system.
0.5s
ICI
FD
Waveform in case of
normal play-back
0.55
10.0
ICI
DRF
2.00
Figure
Figure 42-2
l
--
Check waveform of
pin 7 (TE).
Check the periphery of
pins 41 and 42.
The waveform shown in Fig.
42-3 appears, and no-disc
Tracking servo is
Yes
inoperative.
state appears soon.
Although IL is possible,
is impossible.
Yes
Check the VCO-PLL system.
Figure 42-3
Содержание CD-C471 W
Страница 16: ... I I Ill I i c r __ __ I Figure 16 BLOCK DIAGRAM 2 3 16 ...
Страница 17: ...CD C471 W w UTER lC56115621563 N5M4558L lC562 1 2 Figure 17 BLOCK DIAGRAM 3 3 17 ...
Страница 20: ...CD C471 W l NOTES ON SCHEMATIC DIAGRAM can be found on page 14 1 2 3 4 5 6 Figure 20 SCHEMATIC DIAGRAM 3 13 20 ...
Страница 30: ...CD C471 W CD NORMAL REC OTHERCD NORMAL PLAY I 2 I 3 I 4 5 6 Figure 30 SCHEMATIC DIAGRAM 13 l 3 30 ...
Страница 31: ...CD C471 W 1 SWICH PWB A3 1 DISPLAY PWB A2 1 7 8 9 10 11 12 I Figure 31 WIRING SIDE OF P W BOARD l E 3 1 ...
Страница 36: ... POWER PWB B 1 MAII IUPWB P33 7 A 1 2 3 4 5 6 Figure 36 WIRING SIDE OF P W BOARD 6 8 36 ...
Страница 54: ...CD C471 W MEMO 54 ...
Страница 66: ...CD C471 W 620 12 614x2 hy2 x b16 226 L 235 234 609x2 611 236 SOLM2 1 2 3 4 5 6 CABINET EXPLODED VIEW 2 2 ll ...
Страница 69: ...CD C471 W WOOFER SPI L CH SP2 R CH SPI 2 904 1 I 2 I 3 I 4 I 5 I 6 SPEAKER EXPLODED VIEW 2 2 14 ...
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Страница 71: ...CD C471 W MEMO ...