Table of Contents
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2-2. Initial
Initial Failure
Check the signal at
the pin C15 of U100 is
"LOW" when the
phone is boot on
Check pin4 of OSC200
Voltage is 2.8V ?
Check pin3 of OSC700,
Frequency is 13MHz?
Check pin10 of U302
Voltage is 2.5V?
Check OSC300 is
working?
Yes
Yes
Yes
Yes
Yes
END
SGH-E620 Flow Chart of Troubleshooting
No
Check
L708,pin A13 of U100,
No
OSC700,
No
Check or change
No
Check the soldered status of U302,
No
Check or Change
2-3
OSC200
C113
OSC700
U200
U301
1
2
3
4
5
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