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3. Technical brief
GD510 Operational Description Revision A
LG Electronics 37/113 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.
Figure 11 Keypad Back-light LEDs
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