Chart Of Troubleshooting - Samsung SGH-I907 Service Manual

10. Flow Chart of TroubleShooting
10-1. Power On
PDA Part
'Power On'
No
At TA300
V>3.32
1,4 Pins in U304
V1 = V4
Yes
Voltage in U605
V1=3.0
V2=1.8
V3=1.4
V4=1.4
V5=1.8
V5=1.8
Yes
Check other Power Devices
No
Yes
No
Check U304 & Neighboring Circuit
No
Check U605 & Neighboring Circuit
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Battery Change
10-1