Samsung YP-T10 Service Manual page 28

4-1-6 Cannot Recharge
Symptom Cannot recharge the BATTERY
1 Check external input voltage: DC 5V (D300)
2 Check #FULL_CHG PIN (IC302 14PIN)
Major Checklist
3 Check #CHARGE_STOP PIN (IC302 12PIN): HIGH → CHARGING, LOW → STOP
Cannot Recharge
Does it work when
the power adapter is
connected?
Yes
(after disassembling
the unit) Is the Battery connector
connected properly?
Yes
Check power at the BATTERY
(single part).
Yes
Check external input
1
voltage: DC 5V (D300)
Yes
Check
2
#FULL_CHG PIN
(IC302 14PIN): HIGH → CHARGING,
LOW → FULL_CHARGING
Yes
Check
3
#CHARGE_STOP PIN
(IC302 12PIN): HIGH → CHARGING,
LOW → STOP
Yes
Completion
Samsung Electronics
: HIGH → CHARGING, LOW → FULL_CHARGING
No
No
No
No
 Refer to wave pattern
image of Table 4-5.
No
 Refer to wave pattern
image of Table 4-5.
No
 Refer to wave pattern
image of Table 4-5.
Does it work
after upgrading to the
latest firmware?
Yes
Disassemble the unit and check if
Battery connector is defective.
Recheck after replacing the
BATTERY.
Troubleshooting
No
Replace the BOARD
(needs thorough examination).
4-11