4. TROUBLE SHOOTING
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LGE Internal Use Only
Copyright © 01 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Proximity Sensor is worked as below :
Call connected -> Object moved at the sensor -> Control the screen’s on/off operation automatically
START
LCD OFF?
Change the Proximity
Sensor (U501)
No
Call Connected & Object moved at
Proximity Sensor
Check IC_SCL/SDA & PROX_INT
Change the Main board
No
END
Yes
Work Well?
Yes
No
Yes
Measurement
VREG_MSME_1.8V
VREG_PROX_.6V
PROX_OUT
PROX_IC_SCL / SDA