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Level
3
Repair
8-4
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8-3.
LOGIC
8-3-1.
Power On
Power switch on
NG
Check the VBAT Voltage
C219 or C214
>=3.3V
1.
Charge the Battery.
2.
If
0
V,put more lead C219,C214
NO
Change the UCP200
Check the clock
DCX100
=26
Mhz
?
Check the initial operation
Check the clock generation circuit
Resolder OSC200
Download
Yes
Yes
Yes
NO
NO
L200(VDD_GSM_CORE_1V2)=
1.2
V?
L201(VDD_IO_LOW_1V8)=
1.8
V?
Yes
NO
Check the clock at
OSC200
=32
KHz?
NO
Check the current
c
onsumption
>= 100
mA?
Yes