Samsung SGH-C250 Service Manual page 18

Flow Chart of Troubleshooting
3-1-2. Initial
Initial Failure
The pin #G11 of UCP101 =
1.8V and
the pin #J12 of UCP101 =
Is the pin #K9 of UCP101
"Low → High" ?
There is 32.768kHz wave
forms at the C218 and
The voltage is "High" at
the C113,C115,C116
LCD display is O.K
Sound is O.K
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Yes
2.8V ?
Yes
Yes
C219
Yes
Yes
Yes
Yes
END
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No
Check the
(if it has some problem, it is to be replaced.)
No
Check the
(if it has some problem, it is to be replaced.)
No
Check the
No
Check the UCP101
No
Check the LCD part
No
Check the Audio part
3-4
UCP101
UCP101
②
UCP201
③
①
①