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(4) PLL system check
When a disc is loaded, start play operation.
The HF waveform is normal, but the TOC data cannot be
read.
Check the PDO waveform. (Figure 43-1)
Check around pins 1~6 on IC2.
(5) Others
The HF waveform is normal and the time is displayed
normally, but no sound is produced. Or the sound has
dropouts.
Is pin 35 (C2F) on IC2 "L"?
1. When playing at normal speed
Check the peripheral circuit at pin 37 (DOUT) on IC2 and
the waveform (Figure 43-2).
If OK, Check the Unit.
All manuals and user guides at all-guides.com
No
Yes
Stopped
CH1=500mV
DC 10:1
PDO1
3
4
PDO2
T
FDO
1
=Filter=
=Offset=
Smoothing : ON
CH1 :
BW : FULL
CH2 :
CH3 :
CH4 :
There are too many error flags on a damaged disc which
makes error correction impossible.
Check again using a known good disc.
T
Stopped
CH1=2V
DC 10:1
T
1
DOUT
=Filter=
=Offset=
Smoothing : ON
CH1 :
BW : FULL
CH2 :
CH3 :
CH4 :
– 43 –
CD-BA160H/1700H
1999/04/05 17:33:17
CH3=1V
CH4=1V
500ms/div
DC 10:1
DC 10:1
(500ms/div)
NORM:20kS/s
CH1
v/DIV
500mV
=Record Length=
=Trigger=
0.000V
Main :
100K
Mode : AUTO
0.0V
Zoom :
2K
Type : EDGE CH2
0.00V
Delay :
0.0ns
Hold off :
0.2us
0.00V
Figure 43-1
1999/04/07 09:25:28
500ns/div
(500ns/div)
NORM:200MS/s
=Record Length=
=Trigger=
0.00V
Main :
1K
Mode : NORMAL
0.00V
Zoom :
100
Type : EDGE CH1
Delay :
2.887ms
0.00V
0.00V
Hold off :
0.2us
Figure 43-2
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