Read Sharp LL-T2000 (serv.man4) Service Manual online
LL-T2000A
3 – 4
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
No
No
Yes
continued from preceding page
LCD screen is abnormal with color?
Check if GAIN CONTROL,
WHITE BALANCE are set properly.
WHITE BALANCE are set properly.
Adjust according to the screen
adjustment procedure.
adjustment procedure.
Test terminals LD19, LD20, LD21 analog
color signal outputs are normal?
color signal outputs are normal?
Check circuits around IC4.
IC4 digital (RA, GA, BA, RB, GB, BB)
color signal outputs are normal?
color signal outputs are normal?
Check circuits around IC4.
Check LCD connector and LCD module.
LCD screen is normal in composite sync
or sync-on-green?
or sync-on-green?
Check synchronizing signal processing
circuit around IC2, 3, 4, and 24.
circuit around IC2, 3, 4, and 24.
GAIN CONTROL AUTO operates
normally?
normally?
IC4 digital (RA, GA, BA, RB, GB, BB)
color signal outputs are normal?
color signal outputs are normal?
Check circuits around IC4.
Check circuits around Ic1.
Check circuits around IC1 and IC6.
Input is switched over properly?
IC3 1st and 2nd pin output signals are
normal?
normal?
Check circuits around IC1 and IC3.
Check RGB cable and CN1, 2.
There is no problem with LCD screen.
