3. BASIC ITEMS FOR SERVICE
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:
Items to be checked regarding video
Block noise
Item to be checked regarding audio
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
No. Procedures Item to be checked
1
Confirm whether the customer complain has been solved.
If the customer complain occurs with the particular source, such as
Dolby Digital, DTS, AAC, DVD-A and HDMI, input it for the
operation check.
The customer complain must not be reappeared.
Video, Audio and operations must be normal.
2
Check the analog audio playback.
(Make the analog connections with a DVD player.)
Each channel audio and operations must be normal.
3
Check the digital audio playback.
(Make the digital connections with a DVD player.)
Each channel audio and operations must be normal.
4
Check surround playback.
(Select Surround mode and check the multichannel operations via
the DSP circuit.)
Each channel audio and operations must be normal.
5
Check the video outputs.
(Connect with a DVD player.)
Video and operations must be normal.
6 Check the sound from headphone output. Sound must be normal, without noise.
7
Check the appearance of the product.
No scratches or dirt on its appearance after receiving it for
service.
Cleaning the Fan
Before shipment, be sure to clean the fan,
using the following cleaning materials:
Cleaning paper : GED-008
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