Sharp LC13-B2E, Service Manual

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14
LC-13B2E
TROUBLE SHOOTING TABLE
(Continued)
No picture
Check all the settings microprocessor's adjust process menu.
Is input at pin (74) of IC801 normal?
Check the AV2 line and their peripheral parts.
Check the W9, SY-line, SC-line and their peripheral parts.
No
No VIDEO 2 output
Is input at pins (71) and (72) of IC801 normal?
No
No S-VIDEO output
Is input at pin (70) of IC801 normal?
Check the V2VO line and their peripheral parts.
No
No line output
Is input at pins (1), (2), (3), (56), (57) and (79) of IC801 normal?
Is output at pins (11), (13) and (16) of I4 normal?
Check IC801 and its peripheral parts. Check I13 and its peripheral parts. Check I9 and its peripheral parts.
Check I4 and its peripheral parts.
Is output at pins (11), (13) and (16) of I13 normal?
Yes Yes
No No No
No TELETEXT output
Is output at pins (44)~(49) of I9 normal?
Yes
No