Sanyo XT-24S7000F - Page 39

Correct
the LED
cable
Check PWM_DIM&PWM_REF&
BL_ON Control signal
Check
Main
board
function
Change
QB801/DB801
Check if LED
output
short/open
IR indicator light
up but backlight slake
Check if LED output cable
is connect correction
Check QB801/DB801
damage or not
Remove
short/open
status
Change UB801
3.Power supply for LED drive
Y
N
Y
Y
Y
Y
Y
N
N
N
Increase
brightness/check
if Sampling
resistor is right
Y
check is part of
the brightness is
in dim status
check is all of
the brightness is
in dim status
Check if UB801 PIN 1
voltage is about 12V