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Flow Chart of Troubleshooting
7-1-3 Abnormal Backlight Operation
Yes
Yes
"H"level
"H"level
@ U200 pin5 ?
@ U200 pin5 ?
Yes
Yes
3.3Volt
3.3Volt
@U200 pin4 ?
@U200 pin4 ?
Yes
Yes
Is the output of
Is the output of
U200 pin7 >=180 volt ?
U200 pin7 >=180 volt ?
Yes
Yes
END
END
Press any button on the phone
Press any button on the phone
No
No
No
No
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
No
Check Battery and its neighboring circuits.
Check Battery and its neighboring circuits.
Check U200, ZD201, EL sheet.
Check U200, ZD201, EL sheet.
7-6
Check U100
Check U100
Replace if required.
Replace if required.
Replac if required.
Replac if required.
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