A SERVICE OF

logo

SAMSUNG Proprietary-Contents may change without notice
7. Flow Chart of TroubleShooting
7-1
This Document can not be used without Samsung's authorization
7-1. Power On
PDA Part
In U604
4pin = 3.0V , 23pin = 1.3V
25pin = 1.1V , 33pin = 1.4v
Insert Power
NG
2pin in U607
>3.4V
YES
Change Batt. &
Check ZD709
NO
4pin in U620
=High
YES
Check U620 &
Neighboring Circuits
NO
Check U620 &
Neighboring Circuits
NO
YES
3pin in U604
=High
YES
Check U604 &
Neighboring Circuits
NO
34,35pin IN U604
=High
YES
Check R621,R623,UCP301
& Neighboring Circuits
NO
Check
Other Power Circuit