Samsung SGH-E360 - Troubleshooting Flow Charts; Power On Troubleshooting

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7. Flow Chart of Troubleshooting
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7-1
7-1. Power On
Yes
Yes
Check the initial operation
Yes
No
Check the clock generation circuit
(related to U302)
Check for the clock at C304
= 26MHz
Yes
No
Check the +VDD_GSM_CORE circuit
C402(+VDD_GSM_CORE)
=1.8V?
Yes
No
Check the related circuit
C424(+VDD_IO_HIGH) &
C425(+VDD_IO_LOW) = "H"?
Yes
No
Resolder OSC400
Check the Clock at
R402=32KHZ
Yes
No
Check the PMU related to VINT
C409(VINT) = 2.7V?
Yes
No
END
Change the Battery
' Power On ' does not work
Check the Battery Voltage
is more than 3.4V