LG KG270 Service Manual - Page 36
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3. TECHNICAL BRIEF 3.11 Key LED Interface VBAT KEY BACKLIGHT 1u R221 100ohm R220 100ohm R219 100ohm R218 100ohm R217 100ohm C223 LD205 LEBB-S14H LD204 LEBB-S14H LD203 LEBB-S14H LD202 LEBB-S14H LD201 LEBB-S14H LEBB-S14H 100ohm R216 C222 1u (10V,K,X5R) LD200 KEY_BACKLIGHT R222 1K R223 10K 2SC5585 Q200 (10V,K,X5R) Figure 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. - 37 -
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3. TECHNICAL BRIEF
- 37 -
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
1K
R222
LD205
LEBB-S14H
1u
C222
R217
100ohm
R221
100ohm
KEY_BACKLIGHT