Read Sharp LC-20E1E (serv.man2) Service Manual online
16
LC-20E1E
TROUBLE SHOOTING TABLE
(Continued)
No picture
(2/3)
No S-VIDEO outputNo S-VIDEO output
No VIDEO1 outputNo VIDEO1 output
No TELETEXT output
Check all the settings microprocessor's adjust process menu.
Is input at pin
Check SY-line,
Is input at pin
Check AV2
Is input at pins
Check
IC1203
1 of IC402 and
No
SC-line
and
their
74 of IC801
No
line and its
2,5,11,14 of
Yes
and its
pin 71 of IC801
peripheral parts.
normal?
peripheral parts.
peripheral parts.
peripheral parts.
peripheral parts.
IC1203 normal?
Is output at pins
Check
3~5 of
Yes
connection
SC1602 normal?
cable.
Is output at pins
Is output at pins
Is input at pin
Check IC1601
1 and 7 of
Yes
Yes
57~59 of
No
No
No
No
No
21 of IC1601
Yes
and its
IC1619 and pin
IC1601 normal?
normal?
peripheral parts.
normal?
Check IC1619,
IC1690 and their
Check the
Check V2VO
line and its
normal?
1 of IC 1620
R,G,B line.
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