Service manual
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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
3.2 JIGS LIST
To keep the product quality after servicing, confirm recommended check points shown below.
No.
Procedure Check points
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.
See the table below for the items to be checked regarding video and audio:
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
Before shipping out the product, be sure to clean the following positions by using the prescribed cleaning tools:
CLEANING
Position to be cleaned Cleaning tools
Fans Cleaning paper : GED-008
Name Jig No. Remarks
13P board to board extension jig
cable
GGD1483
Diagonosis
21P board to board extension jig
cable
GGD1485
Diagonosis
Jigs list