Flow Chart Of Troubleshooting - Samsung SGH-F700V Service Manual

9. Flow Chart of Troubleshooting

9-1. Power On
' Power On ' does not work
Check the Battery Voltage
is more than 3.4V
U302 pin F10(PS_HOLD)
Check the Clock at
OSC300=32.768KHz
L300(VREG_MSMC)=1.2V?
R302(VREG_MSME)=1.8V?
R301(VREG_MSMP)=2.6V?
R300(VREG_MSMA)=2.6V?
C325(VREG_TCXO)=2.8V?
Check for the clock at C327
Check the initial operation
Yes
Yes
= 2.6V?
Yes
Yes
Yes
Yes
= 19.2MHz
Yes
Yes
END
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No
Change the Battery
No
Check the U302 related to PS_HOLD
No
Resolder OSC300
No
Check the PMIC
No
Check the PMIC
No
Check the clock generation circuit
(related to U106)
9-1