Sony SLV-D983P Service Manual page 127

Abnormal rotation of
disc motor
Input of A, B, C, D
signal is normal?
(DIC1-131~134)
Yes
SPDRV output is normal?
(DIC1-76)
Yes
DIC1-140(SPDL-SENS)
Input is normal?
Yes
Check disc motor.
(DVD Section)
No
Check DIC1 perpheral circuit
and DCON3 connector
No
Resoldering DIC1.
No
Check DRIC1 soldering.
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