Sharp Aquos LC-13E1M, Service Manual, Page: 21 / 108

21
LC-13E1H/M
LC-15E1H/M
TROUBLE SHOOTING TABLE
(Continued)
No picture and sound
Yes
No
Do F3701 and F3702 function?
Check all the settings on the microprocessor
s adjust process menu.
No
Are secondary outputs (+33V
, +9V
, +5V
, -8V
, -20V)
of
T3701 as specified?
Yes
Are the oscillation waveform at
T3701
s primary side as
specified?
Yes
No
Disconnect F3701 and F3702. Is the load side short-circuited?
Yes
No
Is any of
T3701
s
primary
side, Q3700 and S4701 short- circuited?
Check J3701, its peripheral parts and connection cable.
Replace F3701 and F3702.
Check S4701 and connection cable.
Check the secondary-side load of
T3701.
Fluorescent lamp
Yes
No
Do F6500 and F6501 function?
Yes
No
Is pin (34) of IC1201 at
H
?
Yes
No
Are the oscillation waveforms at the primary side of
T6500
and
T6502 as specified?
Yes
Replace F6500 and F6501.
Yes
Check the line, IC1201 and its peripheral parts.
Check D6500, Q6500 ~ Q6505, T6500
~ T6503
peripheral parts.
Replace the fluorescent lamp and check the oscillation waveform again.
No colour
No TV
colour
No S-VIDEO colour
No
Is input at pin (71) of IC801 as specified? Check SC3405, SC line and peripheral parts.
No VIDEO
colour
Check all the settings on the microprocessor
s adjust process menu.
No COMPONENT colour
No
Is input at pins (4) and (6) of IC801 as specified?
Check J3404, PB line, PR line and peripheral parts.