Electrical Adjustments - Sony MDS-JA333ES Service Manual

5-1. On Part Replacement and Adjustment
• Perform the checks and adjustments of the MDM and MBU blocks following the procedure below .
The procedure is changed depending on the replaced part.
Temperature compensation offset adjustment

ELECTRICAL ADJUSTMENTS

Start
• Temperature compensation
offset check
• Laser power check
• Traverse check
• Focus bias check
• C PLAY check
• Self record/playback check
NG
Part Replacement and repairing
OWH is replaced ?
NO
Either OP, IC171, IC101, or
IC121 is replaced ?
YES
Initial setting of adjustment value
OP or IC171 is replaced ?
YES
Recording the IOP information
(IOP value that is recorded in OP)
Either IC171 or D101 is replaced ?
YES
• Traverse adjustment
• Focus bias adjustment
• Error rate adjustment
• Auto gain adjustment
End adjustment
SECTION 5
YES
NO
NO
NO
• Abbreviation
OP : Optical pick-up
OWH : Overwrite head
OK
The error occurs by other cause.
Perform the mechanism check of
the sled and spindle system, etc.
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