Sharp AQUOS LC-22SV2E, Service Manual

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25
LC-22SV2E
Check all the settins microprocessor's adjust process menu.
Is the pin (53) of IC2001 in the "L" state? Is output at pins (26) and (27) of IC1901 normal? Is output at pins (1) and (7) of IC1903 normal? Is output at pins (8) and (12) of IC3305 normal?
Muting effect is on. Check the SMUTE line.
Check IC1901 and its peripheral parts.
Is the pin (5) of IC3305 in the "H" state?
Muting effect is on. Check the SSTBY line. Check IC1903 and its peripheral parts. Check IC3305 and its peripheral parts.
Check front speaker and connection cable.
Is the pin (52) of IC2001 in the "L" state?
Is output at pins (24) and (25) of IC1901 normal? Is output at pins (1) and (7) of IC304 normal? Check J2204 (Headphones).
Muting effect is on. Check the MP-MUTE line.
Check IC1901 and its peripheral parts. Check IC304 and its peripheral parts.
Is output at pins (37) and (38) of IC1901 normal? Is output at pins (1) and (7) of IC1902 normal?
Check IC1901 and its peripheral parts. Check IC1902 and its peripheral parts.
Check SCART periphery parts.
Check IC1901 and its periphery parts.
Check J3902, J3903 and their periphery parts.
Is output at pin (11) of tuner normal?
Is input at pins (67) and (69) of IC1901 normal?
Check the tuner and its peripheral parts.
Check SIF1 and SIF2 line and their peripheral parts.
Is output at pins (33) and (34) of IC1901 normal?
Is output at pins (1) and (7) of IC3500 normal?
Check IC1901 and its peripheral parts. Check IC3500 and its peripheral parts.
No sound
No sound from front speakers
No sound from headphone
TV sound failure
No sound from RCA output line
Yes
No
No
No
Yes
Yes
Yes
No sound from SCART output line
Yes
No
No
Yes
No
Yes Yes
No No No No No
Yes Yes Yes
Yes Yes Yes
No No No
TROUBLE SHOOTING TABLE
(Continued)