2. SGH-P730 Flow Chart of Troubleshooting and Circuit Diagrams
2-
1
1. Power On
check the current
consumption more
than 100mA
Download again
'Power ON' does not work
No
Yes
Yes
END
Yes
Check the Initial Operation
Check U101 and C116
Yes
Yes
Check U101
pin 39 =
2.8V
No
U101 pin9
= 1.8V
No
Yes
Charge the battery
No
Check the Voltage
of the Battery more
than 3.5V
check keypad
No
Check the pin11 of
U101 is more than
2.8V
Check
"Power On"
key?
No
check U101 and C117
Yes