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5-2. Initial
N
Initial Failure
Y
Y
Check the
signal at the pin 17 of
U101 is “High”
when the phone
is boot on
Check U101, U201
N
Y
Check the pin 18
of U101 is “High”
Check the U701
N
Y
Check the pin 4 of
OSC801 is around 3.0V
Check the soldered status of
OSC801, R801, U101
N
Check the soldered status of
OSC801, U801
Y
END
Y
Check LCD connector CN201,
and resolder bridge
SAMSUNG Proprietary-Contents may change without notice
5-2
SGH-Q105 Flow Chart of Troubleshooting and Circuit Diagram
Check the pin 4 of
U801 is around 3.0V