3. TECHNICAL BRIEF
- 47 -
3.13 Key Back-light Illumination
In key back-light illumination, there are 12 Blue LEDs in Main Board, which are driven by
KEY_BACKLIGHT signal from AD6527.
KEY BACKLIGHT
LD300
LEBB-S14H
LD306
LEBB-S14H
LD307
LEBB-S14H
75
R356
LD310
LEBB-S14H
LEBB-S14H
5
6
3
1
4
LD308
Q301
IMX9T110
2
R365
12K
LD303
LEBB-S14H
1u
C308
1u
C312
R351
75
75
R357
LD313
LEBB-S14H
75
R347
R355
75
R364
10
1u
C309
1u
C318
C317
1u
1u
C307
C316
1u
R348
75
VBAT
75
R350
R366
10
LD302
LEBB-S14H
75
R392
LEBB-S14H
LD301
R391
75
LEBB-S14H
LD312
LEBB-S14H
75
R354
LD304
LD309
LEBB-S14H
R363
10
R367
10
R362
12K
1u
C378
C379
1u
75
R352
C323
27p
VBAT
C315
LEBB-S14H
1u
LEBB-S14H
LD305
LD311
1u
C313
C324
27p
C310
C311
1u
1u
R358
75
C314
R353
75
1u
R349
75
KEY_BACKLIGHT
Figure 3-30. KEY BACK-LIGHT ILLUMINTION
Содержание C3380
Страница 1: ...Service Manual Model C3380 Date November 2005 Issue 1 0 Service Manual C3380 ...
Страница 3: ... 4 ...
Страница 83: ...4 TROUBLE SHOOTING 84 4 11 KEY backlight Trouble Test Points Figure 4 22 ...
Страница 98: ...4 TROUBLE SHOOTING 99 Yes No Yes No Replace M201 Establish a call Replace U101 Software Re_download ...
Страница 109: ...Note 110 ...
Страница 116: ... 117 8 PCB LAYOUT ...
Страница 117: ... 118 8 PCB LAYOUT ...
Страница 125: ...10 STAND ALONE TEST 126 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 129: ... 130 ...
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