Contents of Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
1
A. Video error_ No video/Normal audio
Check LCD back light with naked eye
A1
2
LED driver B+ 24V measuring method
3
Check White Balance value
A4
4
Power Board voltage measuring method
A5
6
A. Video error_ No video/Video lag/stop
TUNER input signal strength checking method
A6
7
Version checking method
A7
9
A. Video error_Color error
connection diagram
A8
10
Tuner Checking Part
A9
11
Check Link Cable (LVDS/EPI) reconnection
condition
12
Adjustment Test pattern - ADJ Key
A12
13
A. Video error_Vertical/Horizontal bar,
residual image, light spot
connection diagram
A8
14
Check Link Cable (LVDS/EPI) reconnection
condition
15
Adjustment Test pattern - ADJ Key
A12
16
<Appendix>
Defected Type caused by T-Con/ Inverter/
Module
Exchange T-Con Board (1)
A-1/5
17
Exchange T-Con Board (2)
A-2/5
18
Exchange LED driver Board (PSU)
A-3/5
19
Exchange Module itself (1)
A-4/5
20
Exchange Module itself (2)
A-5/5
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Summary of Contents for 49LF640 Series
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