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(4) PLL system check.
When a disc is loaded, start play operation.
The RF waveform is normal, but the TOC data cannot be read.
Check the PDOUT waveform. (Figure 6)
Check around pins 26~30 on IC1.
(5) Others.
The RF waveform is normal and the time is dis-
played normally, but no sound is produced. Or the
sound has dropouts.
Is pin 35 (C2F) on IC1 "L" ?
1. When playing at normal speed.
Check the peripheral circuit at pin 58 ~ 60 (DOUT) on IC1 and
the waveform (Figure 7).
If OK, Check the unit.
Yes
No
There are too many error flags on a damaged disc which makes
error correction impossible.
Check again using a known good disc.
LRSY
7 – 4
GX-CD5100W
PDOUT 0
PDOUT 1
FDO
Figure 6
DATACK
DATA
Figure 7
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