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3. HW Circuit Description
3.11 Key LED Interface
C218
1u
KEY_BACKLIGHT
This handset has 10 LEDs that illuminates blue color.
Control signal is controlled by Locosto with PWM and handset has 3 methods, ON, OFF and dimming.
LGE Internal Use Only
VBAT
R215
R216
R217
R218
100ohm
100ohm
100ohm
100ohm
R229
10K
R231
100K
Figure 3-11 Key LED interface
R219
R220
R221
R222
100ohm
100ohm 100ohm
100ohm
3
Q200
2
2SC5585
1
Copyright © 2008 LG Electronics. Inc. All right reserved.
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R223
R224
C219
100ohm
100ohm
1u
Only for training and service purposes
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