Charging Part - Samsung SGH-E310 Service Manual

4. Charging Part

Abnormal charging part
Check the pin 17, 18
Q102 is "3.2~4.2V"?
Check the ICHRG is
1V(during charging)
and around 180mV(full
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SGH-E310 Flow Chart of Troubleshooting and Circuit Diagrams
Yes
of CN300 is
TA_VEXT>4?
Yes
Check the pin 2 of
Q102 is "low"?
Yes
Check the pin 3 of
Q100 is "low"?
Yes
Check the pin 5 of
Yes
charging)?
Yes
END
No
Replace TA,Check CN300
No
Check the Q102
No
Check the Q100
No
Check the Q102
No
Resolder or change R102
2-3