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XW-NAV1-K
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6
7
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5
6
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A
B
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D
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F
3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
Item to be checked re
g
ardin
g
video
Item to be checked re
g
ardin
g
audio
Block noise
Distortion
Horizontal noise
N
oise
V
olume too low
Disturbed image (video jumpiness)
V
olume too high
V
olume fluctuating
Sound interrupted
See the table below for the items to be checked regarding video and audio.
No.
Check points
Procedure
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.
3
Confirm playback error rates at the innermost and outermost
tracks by using the following disc.
D
V
D test disc (GG
V
1025)
The error rates must be less than 5.0e-4.
(This procedure can determine if the drive is degraded.)
4
Check the CD playback.
(track search)
Audio and operations (search etc.) must be normal.
5
Check the D
V
D playback.
(Menu operation, Title / chapter search)
V
ideo, audio and operations (search etc.) must be normal.
7
Check the tuner (FM) operations.
Audio and operations (station search etc.) must be normal.
8
Check the appearance of the product.
N
o scratches or dirt on its appearance after receiving it
for service.
6
Check the iPod playback.
V
ideo, 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 customer complain must not be reappeared.
V
ideo, audio and operations must be normal.
Items to be checked after servicin
g
To keep the product quality after servicing, confirm recommended check points shown below.
Note:
For confirmation of Items
N
o. 4 to
N
o. 7 after disassembling and repairing a product, play back music louder than usual,
in order to check that
V
OCAL audio and bass reproduction are normal.
(These are for final confirmation that antivibration parts for the cabinet have properly assembled.)
www. xiaoyu163. com
QQ 376315150
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TEL 13942296513 QQ 376315150 892498299
