XOCECO LC-26U26, Руководство по обслуживанию

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20
3.2. Raster, but no picture
Check if the unit button
and remote control
operation?
Check if the all
channels have signal?
Replace CPU
board
Enter factory-menu,
initialization EEPROM,
then turn off the TV,
turn on again, display
picture?
Adjust CPU board
again
Which is no signal
of channels
Replace
CPU board
Check if 1VPP signal
and noise wave of X2
(PIN 1) in the TV
board?
Check if output
IF signal of
TUNER1 (pin
11) is normal?
Replace
TUNER1
Check N101
no
yes
yes
HDMI/VGA/YPRP
TV
yes
no
no
no
yes
Does display OSD
menu in screen when
press submenu?
yes
no
yes