![background image](http://html.mh-extra.com/html/lg/c3380/c3380_service-manual_207961047.webp)
3. TECHNICAL BRIEF
- 48 -
3.14 LCD Back-light Illumination
LCD backlight LEDs is controlled by DBB via AAT2807, U402.
WHITE/FLASH LED LDO
1u
C420
R406
7.5K
C419
1u
R405
1.5K
FB403
1u
C418
VBAT
22
R404
1u
C416
FB400
1u
C421
13
VOUT_BL
3
VOUT_FL
$V
11
C1+
C1-
12
C2+
14
15
C2-
C3+
2
1
C3-
EN_FLSH
16
10
EN_SET
GND
9
5
ISINK1
6
ISINK2
ISINK3
7
NC
8
17
PGND
VIN
4
U404
AAT2807AIXN-4.5
C417
1
u
C_FLASH
MLED
MLED1
MLED2
MLED3
FLASH_LED
LCD_DIM_CTL
Figure 3-31. MAIN LCD BACKLIGHT ILLUMINATION
Summary of Contents for C3380
Page 1: ...Service Manual Model C3380 Date November 2005 Issue 1 0 Service Manual C3380 ...
Page 3: ... 4 ...
Page 83: ...4 TROUBLE SHOOTING 84 4 11 KEY backlight Trouble Test Points Figure 4 22 ...
Page 109: ...Note 110 ...
Page 116: ... 117 8 PCB LAYOUT ...
Page 117: ... 118 8 PCB LAYOUT ...
Page 125: ...10 STAND ALONE TEST 126 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 129: ... 130 ...
Page 131: ... 132 ...