Sanyo LCD-26XR7, Руководство по обслуживанию

Страница: 19 / 39

17
3. Troubleshooting guide
3.1. No raster
Turn-on power supply, check
if the red indicator is light in
the STANDBY?
Check if PIN3(5V) of main
board is normal?
Check STANDBY circuit of
power supply board
Press POWER button in the
unit or sensor control and
check the indicator.
Check if the PIN12 of X301 in
main board is high-level?
Check if the PIN11 of X303 in
main board is high-level?
Check power
supply board
Check back light board
yes
no
no
red
blue
no
yes
Replace NS4
no
yes
Check N102 and its
peripheral circuit