Read Sony DCR-DVD405 (serv.man3) Service Manual online
6-69
DCR-DVD404E/DVD405/DVD405E/DVD805/DVD805E_ADJ
+RW Seek
Purpose
Check the seek performance
when DVD-RW disc is used
(Seek between 2 points) x 6 x 2
patterns = Total time
when DVD-RW disc is used
(Seek between 2 points) x 6 x 2
patterns = Total time
Trouble Symptom
Cause
Repair
+RW Read
Purpose
Check the read performance
when DVD-RW disc is used
RF Jitter (DSP Jitter), BLER,
ADIP Error
when DVD-RW disc is used
RF Jitter (DSP Jitter), BLER,
ADIP Error
Trouble Symptom
Cause
Repair
+RW Write
Purpose
Check the write performance
when DVD-RW disc is used
Wobble Jitter, RF Jitter (DSP
Jitter), BLER
when DVD-RW disc is used
Wobble Jitter, RF Jitter (DSP
Jitter), BLER
Seek Check
Read/Write
Trouble Symptom
Specification of seek time
Specification of RF Jitter,
BLER, etc.
BLER, etc.
Cause
Repair
2-axis operation check
Purpose
Trouble Symptom
Cause
MD block
Driver IC
DSP IC
Driver IC
DSP IC
Repair
Additional power output check
Purpose
Read power, Write power
Trouble Symptom
Cause
Check flexible board
OP
RF IC
OP
RF IC
Repair
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