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9. Flow Chart of Troubleshooting
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9-
1
9-1. Power On
No
Not OK
Not OK
Not OK
Not OK
Check VPERM_3.0V,
VANA_2.85V, VRF_2.85V,
VSIM_3.0V, VMEM_1.8V,
VGPIO_2.8V of U202
Check the U201
END
OK
Check the pin 1 of
OSC200 produces clock
signal
Solder OSC200 again
OK
Check the R310
concerning about Jig
Power on
Solder R310 again
OK
Is Power On working?
OK
Repeat sequence
Yes
Change battery
Check battery voltage
is higher than 3.3V
Yes
'POWER ON' does not work
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