Key Back-Light Illumination - LG C1100 Service Manual
Lg c1100 mobile phone service manual
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- User manual (267 pages) ,
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- User manual (162 pages)
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3. TECHNICAL BRIEF
3.14 Key Back-light Illumination
In key back-light illumination, there are 10 blue LEDs on main PCB keypad side , which are
driven by LIGHT3 line from AD6537B.
AD6537B
LIGHT1
LIGHT2
LIGHT3
R261
RLED
0
RED LED
R225
IND_LEDG
10K
R229 47K
RLE
D
GLED
Figure 3-29. KEY BACK-LIGHT ILLUMINTION
GREEN LED
R263
0
R264
Q201
6
1
5
2
4
3
UMX1NTN
- 40 -
R262
GLED
0
NA
R226 47K
RED_LED
R227
47K
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