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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
To keep the product quality after servicing, confirm recommended check points shown below.
A
No.
Confirm a firmware version at test mode.
1
Confirm whether the customer complain has been solved.
2
If the indicated
complain
replay a music file for test of the same format as target file.
Confirm replay of a music file for test with the same format as
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corresponding file format at the front USB terminal. (Confirm
music files with all file formats should be replayed.)
B
Check the external package
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A music file for test with corresponding file format should be used after downloading from the service dedicated Web Site onto
an USB memory, etc.
See the table below for the items to be checked regarding audio.
Item to be checked regarding audio
Distortion
C
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted
D
E
F
10
1
2
Procedures
is caused by a specific file format,
N-50
2
3
Check points
Should be the latest firmware version.
If not, update the version.
The customer complain must not be reappeared.
No abnormalities should exist in screen displayed contents,
audio and actions.
No abnormalities should exist in actions such as audio, screen
display, etc.
No scratches or dirt on its appearance after receiving it for
service.
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4
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