DV-400V-S
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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
Check points after servicing (DVD player)
To keep the product quality after servicing, confirm recommended check points shown below.
See the table below for the items to be checked regarding video and audio:
No.
Procedure
Check points
1
Confirm the firmware version on Service Mode.
The version of the firmware must be latest.
Update firmware to the latest one, if it is not the latest.
The customer complain must not be reappeared.
Video, audio and operations must be normal.
2
Confirm whether the customer complain has been solved.
If the customer complain occurs with the specific disc,
use it for the operation check.
The error rates must be less than 5.0e-4.
3
Confirm playback error rates at the innermost and
outermost tracks by using the following disc.
DVD test disc (GGV1025)
4
Play back a DVD.
(Menu operation, Title/chapter search)
Audio and operations must be normal.
5
Play back a DVD.
(Menu operation, Title/chapter search)
Video, audio and operations must be normal.
6
Check the appearance of the product.
No scratches or dirt on its appearance after receiving it
for service.
Items to be checked regarding video
Item to be checked regarding audio
Block noise
Distortion
Horizontal noise
Noise
Dot noise
Volume too low
Disturbed image (video jumpiness)
Volume too high
Too dark
Volume fluctuating
Too bright
Sound interrupted
Mottled color
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QQ 376315150
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