Read Sharp LL-T19D1 Service Manual online
LL-T19D1
TROUBLE SHOOTING
5 – 2
A
Screen does not operate normally.
Check RGB/DVI cable.
Defective
Replace RGB/DVI cable
with a new one.
with a new one.
Check screen condition by changing display modes.
Operate the "ALL RESET" to check if screen condition changes.
(Press and hold MENU and
(Press and hold MENU and
c
/MODE buttons while turning on power switch.)
Screen stays in black.
Screen stays in white.
Screen jitters or on-screen
characters flicker.
characters flicker.
Abnormal color
Check the following signals
1) Check if module control signal is output.
2) Is the power supply of IC turned ON?
3) Check if control signal is output of IC.
4) Check if LCD 12V is output normally.
Yes
No
Yes
No
Yes
No
CLOCK and PHASE
can be adjusted?
can be adjusted?
Does abnormal area move on
screen when BLACK LEVEL or
CONT is changed after H-POS
or V-POS is set?
screen when BLACK LEVEL or
CONT is changed after H-POS
or V-POS is set?
Switch PWB defective
Main PWB defective.
LCD panel defective.
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