Sanyo LCD-26XR7 - Memorizing the Channels; Selecting a Region; Searching Channels Automatically; Searching Channels Manually

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3. Troubleshooting guide
3.1. No raster
Turn-on power supply, chec
k
if the red indicator is light in
the STANDBY?
Check if PIN3(5V) of main
board is normal?
Check STANDBY circuit o
f
p
ower supply board
Press POWER button in the
unit or sensor control an
d
check the indicator.
Check if the PIN12 of X301 in
main board is high-level?
Check if the PIN11 of X303 i
n
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