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LGE Internal Use Only
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Only for training and service purposes
4. TROUBLE SHOOTING
GS290 Operational Description Revision B
LG Electronics
79/136
LGE Property
Assemble
Replace Vibrator
Check PWM
Signal (TP3&TP4)
Check U302&Q300
replace it
Check U302or
replace it
START
Yes
No
Check Vibrator contact
Yes
TP1(VBAT) of
U302 and TP2 is
High?
No