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SGH-E620 Flow Chart of Troubleshooting
2-
3
2-2. Initial
END
Yes
Check the signal at
the pin C15 of U100 is
"LOW" when the
phone is boot on
Initial Failure
Check pin4 of OSC200
Voltage is 2.8V ?
Check
OSC200
L708
,pin A13 of U100,
OSC700
,
C113
No
Yes
Yes
No
No
Check pin10 of U302
Voltage is 2.5V?
Check or Change
U301
Yes
Yes
No
Check pin3 of OSC700,
Frequency is 13MHz?
Check or change
OSC700
Check OSC300 is
working?
No
Check the soldered status of
U302
,
U200
1
2
3
4
5
Summary of Contents for SGH-E620
Page 7: ...SGH E620 Flow Chart of Troubleshooting 2 4 1 2 2 2 3 4 4 5 ...
Page 16: ...SGH E620 Flow Chart of Troubleshooting 2 13 1 1 1 ...
Page 23: ...SGH E620 Flow Chart of Troubleshooting 2 20 1 2 3 4 5 ...
Page 25: ...SGH E620 Flow Chart of Troubleshooting 2 22 1 2 3 4 5 ...
Page 27: ...SGH E620 Flow Chart of Troubleshooting 2 24 1 2 3 4 5 ...