Sharp LC-22AD1E User Manual

18
LC-22AD1E
TROUBLE SHOOTING TABLE (Continued)
No picture
Becomes dark
Time passes, becomes dark
Becomes white
Check all the settings microprocessor’s adjust process menu.
Is source GND normal? (SC4901, SC4902)
Check SC4901, SC4902 and their peripheral parts.
Is CSCOM waveform normal? (SC4901 1/2 Pin)
Check IC4706, IC4702, Q4701 and their peripheral parts.
Is gate GND normal? (SC4501)
Check SC4501 and its peripheral parts.
Is gate clock (GCK) normal? (SC4501 7Pin)
Check FL4505, R4540 and gate array peripheral parts. (IC4512 5Pin)
Is VEE-6V being outputted? (SC4501 16~19Pin)
Check lC4508 and its peripheral parts.
Is VGH+34V being outputted? (SC4501 3/4Pin)
Check lC4507 and its peripheral parts.
Vertical line output
Is VSH+3.3V being outputted? (SC4901 8/9Pin)
Check IC4703 and its peripheral parts.
Yes
No
Yes
No
Yes
No
Yes
No
Is source clock normal? (SC4901 47Pin)
Check IC4512 and gate aray peripheral parts.
Yes
No
Is output of LBR normal? (SC4901 10Pin)
Check R4574, IC4512 and their peripheral parts.
No
No
No
Is GSP waveform normal? (SC4501 5/15Pin)
Check FB4512, FB4515 and their peripheral parts. (IC4512 7/3Pin)
Yes
No
No

Sharp LC-22AD1E Specifications

General

Brand	Sharp
Model	LC-22AD1E
Category	LCD TV
Language	English