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9. Flow Chart of Troubleshooting
9-
1
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9-1.Baseband
9-1-1. Power ON
'Power On' does not work
Voltage >=3.4V
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Charge the Battery
C246(VISA)= 2.5V?
Check UCP200
C246
G11,G12(VDD_GSM_C
ORE) = 1.2V?
Check UCP200
C224
Check the clock
Freq = 32.768kHz
Check the clock generation circuit
(related to OSC200, C241, C242)
Check the initial operation
END
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Check the current consumption
Check the Vbat Voltage
Check the pin of UCP200
Check the clock signal at OSC of PNX6608
Current consumption
>= 100mA
Yes