Vibrator Trouble - LG KF600d Service Manual

5. Trouble shooting

5.8. Vibrator trouble

Check Points
-Vibrator soldering
-IC is working correct
VBAT
U207 R1114D311D
1
TP1
VDD VOUT
4
NC GND1
6
VIB_EN
CE GND2
C281
1u
VIB_PWM
TP3
Check the dri ver
IC(U209)
PWM Signal
LGE Internal Use Only
VIBRATOR
TP2
3
2
5
R243
TP3
R245
Q203
C OUT
R251 0
B
IN
E GND
KRC402E
- 84 -
C276 0.01u
R238 110K
U209 TPA6205A1ZQVR
51K
C3 A3
IN- VDD
51K C2 B3
IN+ VO+
B1 A1
_SHUTDOWN VO-
C1 B2
BYPASS GND
C284
0.1u
R253 100K
Check t he sol deri ng is
cl ear, if th ere is some
obst acles re- sol der
Copyright © 2007 LG Electronics. Inc. All right reserved.
L207
+
100nH
VIBP
- VIBN
L208
100nH
C286
1u
Only for training and service purposes