SCH-E159 Flow Chart of Troubleshooting and Circuit Diagrams
2-
11
2-1-5. Charging
* Test after connecting with Battery
: All 3 terminals in battery should be connected to the phone by using jump-wires.
Check the pin 17
of U403 is around
5V
Abnormal charging part
Is battery fully
charged?
Check the TA
Check the pin3 of
Q300 is High
END
No
Yes
Yes
Yes
Check the V_IN
of L300 is around
5V
Yes
Check the U301
No
Check the pin3 of
Q300 is Low
Yes
No
Check the Q300
No
No