Samsung SCH-1500 series Service Manual page 59

In the case of charge fault
(test with a battery of 6.2V)
Is the color of LED red ?
Is the voltage at
R7 under 2.48V ?
Is the voltage at
pin-5 of U1 high ?
Check the interface
plug and phone
Samsung Electronics
N
Y
N
Y
N
Y
Check Q6, U2B, Q4, U1
Check R6, R7, VR1, U4
Check F1, U1, U3, Q8, Q7
Troubleshooting
8-13