LG KG271 - Key LED Interface

3. TECHNICAL BRIEF
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3.11 Key LED Interface
This handset has 6 LEDs that illuminates blue color.
Control signal is controlled by EGold-voice with PWM and handset has 3 methods, ON, OFF and
Dimming.
Figure 3-11 Key LED interface
KEY BACKLIGHT
(10V,K,X5R)
(10V,K,X5R)
LD201
VBAT
LEBB-S14H LEBB-S14H
LD200
2SC5585
Q200
LEBB-S14H
LD204
1u
C223
LD202
LEBB-S14H
100ohm
R220
LD203
LEBB-S14H
R219
100ohm
100ohm
R218
R223
10K
100ohm
R216
1KR222
LD205
LEBB-S14H
1uC222
R217
100ohm
R221
100ohm
KEY_BACKLIGHT