Sharp Aquos LC-13S1E, Service Manual

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17
LC-13S1E
LC-15S1E
TROUBLE SHOOTING TABLE
No picture and No sound
Check all the settings microprocessor's adjust process menu.
Do F3301 and F3302 function?
Are T3701's secondary outputs, +34V, +9V, +5V and -110V normal?
Replace F3301 and F3302.
Check S4001 and connection cable.
Is T3701's primary oscillator waveform normal?
Check T3701's secondary load.
Yes
Yes
No
No
No
No No
Yes
Check J3300 periphery and connection cable.
Replace F6501 and F6502.
Yes Yes
No No No
Yes Yes
Back light lamp failure to light up
Is the primary side of T6500, T6502 periphery short-circuiting?
Replace the back light lamp with new one and check again.
Remove F3301 and F3302 and check the load side. Is there short-circuiting?
Is there short-circuiting of T3701 primary side periphery, Q3701, Q3703 and S4001.
Is the pin(121) of IC1201 in the "H" state? Is the output of Q3601 in the "L
" state?
Check the OFL2 line, IC1201 and their peripheral parts. Check the OFL2 line, Q3601 and their peripheral parts.
Check T6500, T6502, Q6500 ~ Q6704 and connection cable.