Vibrator Trouble Shooting - LG KE590 Service Manual

4. TROUBLE SHOOTING

4.21 Vibrator Trouble Shooting

z Vibrator operation scheme is shown below
VIBRATOR
VIBRATOR
TF_DAT2
VRMMC
TF_DAT3
TF_CMD
z Vibrator Trouble
Check the voltage of CN601.21
of vibrator PAD (OUT100)
Check the soldering of
Vibrator of Main-Sub
Vibrator has a problem.
LGE Internal Use Only
R104 100nH
OUT100
R105 100nH
OUT101
CN100
1 14
VBACKUP
2 13
3 12
TF_DAT1
4 11
TF_DAT0
5 10
6 9
TF_CLK
7 8
START
NO
Voltage is 2.7?
YES
NO
Check the voltage
Voltage is 2.7?
YES
NO
YES
Change Vibrator
ABB(U101) has a problem.
Replace U101 or change the
board
Check the condition of CN100(Main-Sub)
If problem, Replace CN100(Main-Sub)
Re-solder Vibrator
Copyright © 2007 LG Electronics. Inc. All right reserved.
- 104 -
R105
R104
R105
OUT100 OUT101
Soldering check
CN100(Main-Sub)
Only for training and service purposes