Troubleshooting guide LC-19KE42 / LC-22KE42
1
．
Panel is dark.
Yes
Red
No
Blue
No
Yes
No
Yes
Check if the voltage
of
X801-11#
on
main board is
inputted
5V
?
Power on main
power, check if
the red indicator
light in STANDBY
mode is bright ?
Check if backlight board
is normal?
Press key “
POWER
” of
remote control or the unit
to power on
，
check what
color of indicator light is?
Check if the voltage of
X801-13
＃
on main board
is high level?
Check if the voltage of
X801-1
＃
on main board
is high level ?
Check if STANDBY
circuits on power
board are normal ?
Check if circuits about
power control on main
board are normal?
Check if circuits about
power control on main
board are normal?
Check if power board
assembly is normal ?
Summary of Contents for LCD-22XR9DZ
Page 18: ...Block diagram ...
Page 23: ...Wiring diagram ...
Page 37: ...APPENDIX B Exploded view LC 22KE42 ...
Page 43: ...April 2009 ...
