Sharp TU-GD10U-T Service Manual page 41

TROUBLE SHOOTING TABLE
Does the optical digital output come
out?
YES
Is the audio signal
(LOUT_SUB/ROUT_SUB) output
from pins (7) and (9) of P8901?
NO
Is the audio signal (AOUT L/AOUT R)
output from pins (19) and (18) of
IC8801?
NO
Check IC8801, IC8101 and their
peripheral circuits.
No sound of digital broadcasting comes out.
NO
Is data output to pin (2) of P8801?
YES
Check the cable connection, P5702 of
AV PWB, IC2707 of AV-SUB PWB
and their peripheral circuits.
YES
Check the cable connection , IC8801
and its peripheral circuits.
YES
Check IC8803, IC8802, Q8804,
Q8803 and their peripheral circuits.
41
(Continued)
NO
Check IC8804, IC8101 and their
peripheral circuits.
TU-GD10U-T
TU-45GAD/T
LC-45GX6U/D/T