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SGH-E600/E608 Flow Chart of Troubleshooting and Circuit Diagrams
2-
2
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2. Initial
3. Sim Part
Check the signal at the
pin 19 of U100 is
"High" when the phone
is boot on
Check the pin 22 of
U100 is "High"
Check U100
NO
Check the U700
NO
Check the soldered status of
OSC800, L800, U100
NO
YES
YES
YES
Initial Failure
Check the pin 4 of
OSC800 is around 2.8V
Check and resolder LCD connector CN200
if there is solder bridhe between the pins
END
YES
Check the SIM
connector's (CN100)
connector's to SIM card
Check the circuit related to
U100
NO
resolder or change CN100
NO
Check the related circuit of
CN100
NO
YES
YES
YES
Phone can't access SIM card
Check the circuit around U600 output
and voltage supply circuitry
END
YES
Check the pin 1 of CN100.
Voltage = 3V
Check the circuit around CN100 input
circuitry
Check the related circuit of
U600 and U100
NO
