Sharp LC-15B2UA Service Manual page 18

LC-15B2UA
LC-15B2UB
(3) Trouble shooting using test patterns
Is the test pattern of IC801
displayed normally?
Is the waveform of signal
input pins of IC801 normal?
TV/Composite.......Pin (73)
S-video........Pins (71), (72)
Component.....Pins (4), (5),
(6), (75)
Check IC801 and its
peripheral circuits.
Is the test pattern of IC1201
displayed normally?
Check the signal output
line of IC801, IC801 and
its peripheral circuits.
Check IC1201 and its
peripheral circuits, voltage of
LCD panel and waveform.
Check the signal input line
of IC801.
Is the waveform of pins
(10), (11), (13), (15), (17)
of IC1201 normal?
Check the line, IC801 and its
peripheral circuits.
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