4. TROUBLE SHOOTING
- 104 -
Copyright © 01 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4.14 Proximity Sensor on/off Trouble Shooting
Proximity Sensor is worked as below :
Call connected
→
Object moved at the sensor
→
Control the screen’s on/off operation automatically
Measurement
VREG_MSME_1.8V
VREG_PROX_.6V
PROX_OUT
PROX_IC_SCL / SDA
Call Connect & Object moved at the
Proximity Sensor
LCD off?
No
No
Yes
Work well?
START
END
Change the Proximity Sensor (U60)
No
Yes
Chang the main board
Yes
Check PROX_IC_SDA /
SCL Output & Prox_out
(TP1,,3)