Flow Chart Of Troubleshooting; Power On - Samsung SGH-T329 Service Manual

9. Flow Chart of Troubleshooting

9-1. Power On

' Power On ' does not work
Check the Battery Voltage
C403(VINT) = 2.7V?
Check the Clock at
C419(+VDD_IO_LOW) &
C418(+VDD_IO_HIGH) = "H"?
C410(+VDD_GSM_CORE)
Check for the clock at
Check the initial operation
Yes
is more than 3.4V
Yes
Yes
R400=32KHZ
Yes
Yes
= 1.9V?
Yes
C308
= 26MHz
Yes
Yes
END
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
No
Check the PMU related to VINT
No
No
Check the related circuit
No
Check the +VDD_GSM_CORE circuit
No
Check the clock generation circuit
9-1
Change the Battery
Resolder OSC400
(related to U101)