Table of Contents
Advertisement
4. TROBULE SHOOTING
4.4 Power On Trouble
SETTING : Connect PIF, and se t remote switch off at PIF
* Refer to Figure 16
and check the level change
the following pins at U301
Logic level at pin 29 of U301
START
Check Battery Voltage
> 3.35V ?
Yes
Push power-on key
of U301 Pin 30
Yes
Check the voltage of
Pin 21 = 1.8V ?
Pin 25 = 2.75V ?
Pin 20 = 2.8V ?
Pin 3 = 2.0V ?
Yes
= HIGH?
Yes
THE PHONE WILL
POWER ON.
No
Charge or Change Battery
No
Check the contact of power-key
or dome switch.
No
Replace U301
No
Redownload software
- 52 -
Advertisement
Table of Contents
