LG KP260 Service Manual page 74

CHECKING FLOW
START
Are all LEDs off?
YES
Is the level Period at TP1
High Duty(30%)?
YES
Is the level Period at TP1
Low Duty(70%)?
YES
Are all LEDs
Working?
YES
Backlight will work properly.
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Only for training and service purposes
NO
Is LD200 off?
YES
Resolder TP1
NO
Check U103
NO
Check U103
NO
Check the soldering
each LED
NO
Replace or resolder
component
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4. TROUBLE SHOOTING
NO
Is LD201 off?
YES
Resolder TP2
LGE Internal Use Only