Lcd Back-Light Illumination; Vibrator - LG KP260 Service Manual

3. TECHNICAL BRIEF

3.14 LCD Back-light Illumination

LCD backlight LEDs is controlled by AD6726 via AAT2845, U404. MLED is the charge pump output to
drive LCD backlight LEDs, and MLED1 & MLED2 are current sink ports.
2V8_AVDD
FB400
C426
1u

3.15 VIBRATOR

VIBRATOR
VB300
1
2
LGE Internal Use Only
VBAT
1
MLED1 D2
2
MLED2 D1
3
LDOB
4
IN1
5
C427 C428 PGND
6
27p 27p IN2
C429
10u
Figure 3.13 MAIN LCD BACKLIGHT ILLUMINATION
VIBRATOR
L302
100nH
C339
4.7u
Figure 3.14 Vibrator
U404
AAT2845IML-EE-T1
16
D4
15
ENLDO
14
EN_SET
13
R418 1.5K
C1_P
12
C425 1u
C1_M
11
OUT
C432
C431 R421
2.2u
27p 100K
C430
1u
R424
62K
R425
120K
(1608)
R317
Q2_C Q2_E
3
10
Q2_B
Q1_B
2
Q1_E Q1_C
1
Q300
Copyright © 2008 LG Electronics. Inc. All right reserved.
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CAM_PWR_EN
R416
100K
LCD_DIM_CTRL
FB401
MLED
1V8_CAMCORE 1V8_CAMIO
C433
1u
VBAT
4
5
C331
27p
6
Only for training and service purposes