三星(SAMSUNG)B5702原厂维修图纸
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2016-08-15
11:37:56
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SAMSUNG Proprietary-Contents may change without notice
10. Flow Chart of Troubleshooting
10-1
This Document can not be used without Samsung's authorization
10-1.
Baseband
10-1-1.
Power ON
'
Power On' does not work
Voltage
>=3.4V
Download again
Charge the Battery
C329(VISA)=
2.5
V?
Check U300
C329
L1(VDD_GSM_CORE)
=1.2
V?
Check U300
C343
Check the clock
Freq
= 32.768k
Hz
Check the clock generation circuit
(
relatedtoOSC
300,
C331, C334
)
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 U300
Check the clock signal at OSC of MAX8699
Current consumption
>= 100
mA
Yes
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