LG KG270 Service Manual - Page 73
of U100 = Vbat?
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4. TROUBLE SHOOTING Checking Flow Start Check the voltage level of U100 = Vbat? Yes Check the Signal, C117,C118 Yes Check the Level of U100.C3 = Low ? Yes Check the Signal, L102,L103 Yes Check the Contact Of CN101 Yes Try again or Change the Board Check No The battery Check U102 No Check No U102 Re-solder No L102,L103 Re-Assemble or Re-place No Speaker - 74 -
4. TROUBLE SHOOTING
- 74 -
Checking Flow
Start
Check the voltage level
of U100 = Vbat?
No
Check
The battery
Yes
Check the Signal,
C117,C118
Yes
No
Check
U102
Check the Level of
U100.C3 = Low ?
No
Check
U102
Check the Contact
Of CN101
Yes
No
Re-Assemble
or Re-place
Speaker
Try again
or Change the Board
Yes
Re-solder
L102,L103
Check the Signal,
L102,L103
Yes
No