LG GT540 Service Manual page 138

VREG_MOTOR_3.3V
R502
1K
1%
VIB_PWM
TP4
R503
680
1%
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Only for training and service purposes
R505
BYPASS
C1
_SHUTDOWN
B1
R501 51K
IN+
C2
1%
R500 51K
IN-
C3
1%
U501
R504
C501
0.1u
- 19 -
150K
1%
GND
B2
VO-
A1
VO+
B3
VDD
A3
150K
TP1
1%
C557 10n
C500
1u
4. Trouble Shooting
TP2
VIB_M
VIB_P
KPD_PWR_N
TP3
LGE Internal Use Only