Flow Chart Of Troubleshooting - Samsung SGH-P730 Service Manual

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