Read Sharp LC-13B2E (serv.man4) Service Manual online
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
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