Sharp SYSTEM-CD130H Service Manual page 24

S.¥S TEM-CD130H
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Play operation is performed without disc.
Yes
| The turntable rotates a little.
No
| The turntable fails to rotate or rotates at high speed. |
Yes
Siop --> Play
As VCO freque-
ncy is locked at
Prorat 4.32 M Hz,
1802 (2) PDO voltage of PDO
0.58 rises and stabili-
1.00 V
icso1 (6) FD ie il]
zes.
OA dc
Pte tT Tt Th
Check IC802 pins 37and 40,
Abnomal
Check the periphery of IC803 (OPAMP).
~24-
The spin driver circuit is normal.
Yes |
Check the periphery of IC801 pins 23 to 27, pin 39 and pin 40,
IC802 pin 12 and pin 13, C804 to BI803/CNSs0o3.
Although HF waveform is normal, TOC data cannot be read. | —__
Check the IC801 pins 43 and 44, [C802 pins 3, 5, 7, 9 and 10.
Usually, the number of pulses of flawless disc is 400 pulses/