LG Electronics KS360 service manual Check Vibrator Connector Combination

5. Trouble shooting

START

Check Vibrator Connector

Combination

Check the signal of OUT300,OUT301 (TP1,2)

176Hz 2Vp-p PWM?

Yes

Check the signal of

C303 (TP4)

Voltage is 3.0V?

Yes

Check the signal of

R304 (TP3)

Voltage is 2.6V?

Yes

Replace Vibrator

Assemble

No	Check the soldering
	of U302,L300,L301

No

Check the soldering

of U300

Resoldering of

Replace U102

Copyright © 2008 LG Electronics. Inc. All right reserved.	- 81 -	LGE Internal Use Only
Only for training and service purposes