Vibrator Trouble - LG KC780 Service Manual

5. TROUBLE SHOOTING

5.9 Vibrator trouble

Check Points
- Soldering wire and driving IC (U101)
VVIB_2V8
R101
1K
Check Vibrator wire
Check the voltage
difference of
Replace Vibrator
LGE Internal Use Only
VIBRATOR
U101
SUY98005LT1G
1
R102
VIN
3
VOUT
R103
2
10
GND
100K
START
soldering
TP1 &TP2
is 3V?
Yes
Assemble
C103 1u
47nH
L102
100nH
C104
L103
0.1u
Solder again or
No
Replace U101 on
Socket FPCB
TP1
TP2
- 86 - Copyright © 2008 LG Electronics. Inc. All right reserved.
VBAT
47nH
C102
L101
VIB+
1u
VIB-
Only for training and service purposes