Flow Chart Of Troubleshooting; Power On - Samsung SGH-Z560 Service Manual

9. Flow Chart of Troubleshooting

9-1. Power On

' Power On ' does not work
Check the Battery Voltage
U201PIN57(PS_HOLD)
Check the Clock at
C229(VREG_MSMC) =
C227(VREG_MSME) = 1.8V?
C223(VREG_MSMP) = 2.6V?
C220(VREG_MSMA) = 2.6V?
C211(VREG_TCXO) = 2.8V?
Check for the clock at
Check the initial operation
Yes
is more than 3.3V
Yes
= 2.6V?
Yes
OSC200=32KHZ
Yes
1.375V?
Yes
Yes
C208= 19.2MHz
Yes
Yes
END
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No
Change the Battery
No
Check the PMIC related to PS_HOLD
No
No
No
No
Check the clock generation circuit
(related to TCX500)
9-1
Resolder OSC200
Check the PMIC
Check the PMIC