Sharp Aquos LC 15B2UA, Руководство по обслуживанию

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LC-15B2UA
LC-15B2UB
TROUBLE SHOOTING TABLE
(Continued)
No picture at all
No
Are inputs and outputs of IC801 as specified?
Check all the settings on the microprocessor
s adjust process menu.
No picture
Check IC402 and its peripheral parts.
No TV output
Yes
No
Are voltages at pins (6), (7) and (9) of tuner as specified?
Check the power line.
Yes
No
Is output at pin (19) of tuner as specified?
Check the tuner and its peripheral parts.
No
Is input at pin (3) of IC402 as specified?
Check the line in question.
Yes
Check IC402 and its peripheral parts.
Yes
No
Are pins (2) and (4) of IC402 at
H
and L respectively?
Are pins (65) and (66) of IC2001 at
H
and L respectively?
No S VIDEO output
No
Are inputs at pins (71) and (72) of IC801 as specified?
Check SC3405, SY line, SC line and peripheral parts.
No COMPONENT output
No
Is input at pins (4), (5), (6) and (75) of IC801 as specified?
Check J3404, DVD-Y
line,
PB line, PR line and peripheral parts.
Yes
Check the line in question.
No VIDEO 1 or 2 output
Yes
No
Are inputs and outputs of IC402 as specified?
Check IC402 and its peripheral parts.
No
Is input at pin (73) of IC801 as specified?
Check IC801, A
V1 line and
their peripheral parts.
Yes
Check pin (88) of IC2001, or check SSW line.
Yes Yes
No
Is the test- pattern of LCD controller displayed?
Check IC1201, its peripheral parts and LCD panel.
No
Check IC801 and its peripheral parts.
Is the test- pattern of video decoder displayed?