- 42 -
LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
LG Electronics
43/147
LGE Property
3.9 Keypad back-light illumination
There are 2 snow white color LEDs on Key FPCB for keypad illumination. Keypad Back-light is controlled by
SM-Power Flash LED port which has constant current control function. The whole configuration of the
SM-POWER Flash LED drivers is shown in below Figure11.