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9. Flow Chart of Troubleshooting
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9-1
9-1. Power On
9-1-1. PDA Part
Insert Power
NG
Check pin 2 of V_BAT in
U402
is more than 3.1V
No
Change the Battery &check ZD714
Yes
Check followings :
C432 is 1.8V
C444 is 3.0V
C440 is 3.0V
No
Check the U404
and the related cuircuit
Yes
No
Check the U404
and the related cuircuit
Check C437 is 1.2V
Yes
Check pin 1 of TR400
is 'H'
No
Check the UCP800
Yes
Check C445, C431 is 1.2V
No
Check the U404
and the related cuircuit
Yes
Check the U800
and the related cuircuit
Check pin 6 of U800 is 'H'
No
Yes
Check Other Power Circuit
Summary of Contents for GT-B7300B
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