Sharp CD-M4000 Service Manual

CD-iu14000W//CP-M4000
When a disc is loaded, start play operation.
I
The HF waveform is normal, but the TOC data cannot be
read.
1
Check the PDO waveform. (Figure 44-l)
Check around pins 73-78 on ICl.
ix3 0.W”
CH4 0.W”
Figure 44-1
The HF waveform is normal and the time is displayed
normally, but no sound is produced. Or the sound
has dropouts.
No
& There are too many error flags on a damaged disc which
makes error correction impossible.
1. When playing at normal speed.
Check the peripheral circuit at pin 39 (DOUT) on ICl and
the waveform (Figure 44-2).
1 Check again using a known good disc.
/ If OK. Check the unit. 1
-44-

Sharp CD-M4000 Specifications

General

Brand	Sharp
Model	CD-M4000
Category	Stereo System
Language	English