LC-15E1E (serv.man3). Adjusting procedure and troubleshooting table - Sharp TV Service Manual (repair manual). Page 5

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LC-13E1E
LC-15E1E
16
TROUBLE SHOOTING TABLE
 (Continued)
No picture (1)
Check all the settings microprocessor
’s adjust process menu.
Is in/output of 
IC801 normal?
Is in/output of
IC1201 normal?
Check IC801
and its 
peripheral parts.
Check IC1201 
and its 
peripheral parts.
Check IC402 
and its 
peripheral parts.
Check IC801, 
AV1 line and its 
peripheral parts.
Check LCD 
panel voltages 
and waveform.
Yes
Yes
No
No
No picture 
at all
Is in/output of 
IC402 normal?
Is input at pin 
(73) of IC801 
normal?
Yes
No
No
No TV and 
S-Video
output
Is voltages at 
pins (6), (7) and 
(18) tuner 
normal?
Is output at pin 
(13) of tuner 
normal?
Check the 
power line.
Check tuner 
and its 
peripheral parts.
Is input at pin 
(3) of IC402 
normal?
Is the pins (2) 
and (4) of IC402 
at "H" and "L" 
state?
Yes
Yes
No
No
No
No
No
Yes
No TV output
Is the pins (65) 
and (66) of 
IC2001 at "H" 
and "L" state?
Yes
Check the its 
line.
Check the its 
line.
Check IC402 
and its 
peripheral parts.
Is input at pin 
(75) of IC801 
normal?
Check V1 IN 
line and its 
peripheral parts.
No
No VIDEO 2 
output
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