Table of Contents
Advertisement
MX8550
START
Check battery voltage > 3.4V
YES
Push power - on key and
check the level change of U
PWR_ON
YES
Check the voltage of
the following port at U 3 03
+1.4V_MSMC
+1.8V_MSMP 1
+2.6V_MSMP 2
+2.6V_MSMA
+2.8V_TCXO
YES
Logic level at PS _ HOLD (R306 )
of U303=High ?
YES
Does it work properly ?
YES
The Phone will power on
LG Electronics Inc.
Checking Flow
Checking Flow
Charge of Change Battery and try again
NO
Check the contact of power -key
303
NO
NO
NO
NO
Re-download software
and try again
Replace U 303
Re-download software
and try again
YES
Does it work properly ?
Re-download software
NO
and try again
- 90/148 -
Advertisement
Table of Contents
