Vibrator Trouble Shooting - LG KE500 Service Manual

4. TROUBLE SHOOTING

4.21 Vibrator Trouble Shooting

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