Samsung SGH-D800 Service Manual page 10

SGH-D800 Flow Chart of Troubleshooting
2-1-2. Initial
Initial Failure
The pin #C12 of U101 =
1.8V and
the pin #J12 of U101 =
Is the pin #K9 of U101
"Low → High" ?
There is 32.768kHz wave
forms at the C216 and
Is the pin #3 of U106 &
U107 "High"?
The voltage is "High" at
the C111,C116,C117
LCD display is O.K?
Sound is O.K?
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Yes
2.8V ?
Yes
Yes
C217
Yes
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 U106 & U107
No
Check the
No
Check the LCD part
No
Check the Audio part
2-6
U101
U101
U201
U101