Sharp AQUOS LC-22SV2E, Руководство по обслуживанию

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LC-22SV2E
TROUBLE SHOOTING TABLE
Check all the settings microprocessor's adjust process menu.
Do F3701 and F3702 function?
Are T701's secondary outputs, +32V, +9V, +5V and -8V normal?
Remove F3701 and F3702 and check the load side. Is there short-circuiting?
Is there short-circuiting of T3701 primary side periphery, Q3702, Q3711 and P3706?
Replace F3701 and F3702.
Check T3701's secondary side periphery.
Check T701's secondary load.
Check all connection of each unit. (Refer to overall wiring diagram.)
Check T701's primary side periphery.
Check T3701's primary side periphery, Q3711 and their perpheral parts.
Does F3701, F3702, F6551, F6552, F6553 and F6554 function?
Is the pin (31) of IC4561 in the "H" state?
Are the Q6553, Q6556, Q6559 and Q6562 short-circuiting?
Is T6551~T6557's primary oscillator waveform normal?
Replace the fluorescent lamp with new one and check again.
Check the OFL line, IC14561 and their peripheral parts.
Check Q6553, Q6556, Q6559, Q6562 and their peripheral parts.
Check Q6551, Q6554, Q6557, Q6560, Q6552, Q6555, Q6558, Q6561 and connection cable.
No picture, No sound
Yes
No
Yes Yes
Yes
No
No No
Fluorecent lamp failure to light up
Yes Yes
No No No
Yes Yes