Sharp Aquos LC-20E1E, Service Manual

Page: 19 / 76

19
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No sound (2/2)
Check all the settings microprocessor
’s adjust process menu.
Yes
No No
No sound from SCART
No
SCART sound failure
Yes
No
Check IC1901 and its peripheral parts.
Is output at pins (36) and (37) of IC1901 normal?
Check IC1902 and its peripheral parts.
Is output at pins (1) and (7) of IC1902 normal?
Check their lines and their peripheral parts.
Is input at pins (53) and (54) of IC1901 normal?
Check IC1901 and its peripheral parts.
Is output at pins (27) and (28) of IC1901 normal?