On Screen Display Does Not Appear - Sharp LC-32AD5E-BK Service Manual

ON SCREEN DISPLAY DOES
NOT APPEAR
Is there signal at
pins 2, 4 of IC101?
Yes
Is there color signal
at pins 83 and 84 of
IC803 ?
Yes
Change MAIN PCB.
TROUBLSHOOTING GUIDDE
No
No
E-6
Check IC101 and
peripheral circuit.
Check IC803 and peripheral
circuit.