Vibrator Trouble - LG GD510 Service Manual

5. Trouble shooting
GD510 Operational Description

5.8 Vibrator trouble

Check Points
-Vibrator soldering
-IC is working correct
TP1
TP1
VIB_EN
R301 C311
100K
LIN_INVERT
LIN_PWM_FRQ
LIN_PWM_MAG
TP
TP
Check the driver
IC(U303)
PWM Signal
LG Electronics
LGE Internal Use Only
VBAT 3V0_VMOT
U302RP104K301D
TP2
4 1
VDD VOUT
3 2
CE_NC GND
1u
3V0_VMOT
TP3
U301 TC7SZ86FU
1 5
IN_B VCC
2
IN_A
3 4
GND OUT_Y
U306 TC7SZ86FU
1 5
IN_B VCC
2
IN_A
R311
3 4
GND OUT_Y
TP4
TP3
Vibrator
TP2
C337
1u
C309
R304
U303 TPA6205A1ZQVR
TP3
C3
IN-
R312 120K
C2
IN+
B1
VIB_EN
_SHUTDOWN
C1
BYPASS
C338
10n
TP4
120K R314
TP4
C343
Check the vibrator
contact
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Revision A
3V0_VMOT
2.2n
100K
C336
1u
A3
VDD
B3
VIB+
VO+
A1
VIB-
VO-
B2
GND
100K
2.2n
LGE Property
Only for training and service purposes