6
VSX-523-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
3.2 JIGS LIST
Items to be checked after servicing
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.
Item to be checked regarding video
Item to be checked regarding audio
Procedures
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 tuner (AM and FM) operations.
Audio and operations must be normal.
7
Check the sound from headphone output.
Sound must be normal, without noise.
8
Check the appearance of the product.
Block noise
Distortion
Horizontal noise
Noise
Flicker
Volume too low
Disturbed image (video jumpiness)
Volume too high
Too dark
Volume fluctuating
Too bright
Sound interrupted
Mottled color
No scratches or dirt on its appearance after receiving it for
service.
Jigs List
Jig Name
Part No.
Remarks
RS-232C update jig (Jig + 10P FFC)
GGF1642
(Marketing product)
(Marketing product)
MAI
N
microcomputer firmware update
(RS-232C
↔
Rear panel)
RS-232C cable (9-pin to 9-pin, straight cable)
Diagnosis (D-MAI
N
Assy
↔
CPU Assy)
Board to board extension jig cable
GGD1
8
47
Diagnosis (D-MAI
N
Assy
↔
CO
N
CT Assy)
Board to board extension jig cable
GGD1
8
4
8
Diagnosis (D-MAI
N
Assy
↔
CPU Assy)
Board to board extension jig cable
GGD1
8
46
Lubricants and Glues List
Name
Part No.
Remarks
Silicon grease
GEM1057
Refer to "9.2 EXTERIOR SECTIO
N
".
Silicon adhesive
GYA1011
(KE40RT
V
-
W
)
Refer to "9.2 EXTERIOR SECTIO
N
".
HDMI & CEC (SUB) microcomputer firmware update
(USB
↔
Rear panel)
RS-232C update jig
GGF1646
USB cable (USB A-Type
↔
USB B-Type)
jomi
