Flow Chart Of Troubleshooting - Samsung SGH-i700 Service Manual

2. SGH-i700 Flow Chart of Troubleshooting
1.Power On
'POWER ON' does not work
Check the current
consumption more than
Check the pin 1 of
U316 or U317 is High
Check the pin 1 of
U323 is High
Check the VBat more
than 3.6V
Check the pin
4 of U308 is more than
Check the pin
5 of U311 is more than
Check the clock signal
at OSC101 and OSC102
Check the initial operation
Yes
No
20mA
Yes
No
Yes
No
Yes
No
Yes
No
3.3V
Yes
No
1.0V
Yes
No
Yes
END
SAM SU N G Pr opr i et ar y- C ont ent s m ay change w i t hout not i ce
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Press nPower Key or Hardware
Reset
Charge the Battery
Charge the Battery
Charge the Battery
Check to the path from pin 1 of
CN301 to pin 1, 2 of U307
Check the pin 1 of U311 is High
Retry Hardware Reset
2-1