Lcd Part - Samsung SGH-L770 Service Manual

10-1-7 LCD part

1. LCD_3.0V always on
2. MLCD_LED EN/SET : 1.8V
Backlight Enable port
R703
CAM_STBYn_VGA
R705
CAM_STBYn_2M
R704
CAM_RESETn
PCLK
CAMD(6)
CAMD(4)
CAMD(2)
CAMD(0)
CAM_SCL
CAM_V_SYNC
LCD_RS1_A
LCD_WE_A
FLM
R707
LCD_RESETn
MOTOR_EN
LCD(7)
LCD(5)
LCD(3)
LCD(1)
PWR_ON
KEY_OUT(2)
KEY_OUT(1)
KEY_OUT(0)
VR705 VR701 VR708
C702
F706
7 3
LCD(0) OUT IN
LCD_D(0)
8 4
LCD(2) OUT IN LCD_D(2) CAM_V_SYNC
9 5
L C D ( ) 4 OUT IN L C D _ R S 1 _ A
LCD_D(4)
10 6
LCD(6) OUT IN LCD_WE_A
LCD_D(6)
G G
1 2
F702
7 3
LCD(7) OUT IN
LCD_D(7)
8 4
LCD(5) OUT IN MLCD_CSA
LCD_D(5)
9 5
LCD(3) OUT IN LCD_D(3) CAM_H_SYNC
10 6
IN
LCD(1) OUT
LCD_D(1)
G G
1 2
C710
C532 C531
L704
L705
L706
R313
R309
R307
R308
C550
C558
C553 C549
VIO_2.62V
R700
VLCD_3.0V
VBAT SKEY_3.3V
R702
HEA702
2 1
2 1
4 3
4 3
6 5
6 5
8 7
8 7 MLCD_LED
9
10 10
9
12 12 11 11
MCLK
14 14 13 13
CAM_PWR_ONO
16 16 15
15 CAMD(7)
18 18 17 17
CAMD(5)
20 20 19 19
CAMD(3)
22 22 21 21
CAMD(1)
24 24 23 23
26 25
26 25 CAM_SDA
28 28 27 27 CAM_H_SYNC
30 30 29 29
MLCD_CSA
32 32 31 31
LCD_RD
34 34 33 33
36 36 35 35
LCD(6)
38 38 37
37 LCD(4)
40 40 39 39
LCD(2)
42 41
42 41 LCD(0)
44 43
44 43
46 45
46 45 KEY_IN(6)
48 47
48 47 KEY_IN(5)
50 49
50 49 KEY_IN(4)
52 52 51 51
SPK_MNS
54 54 53 53
SPK_PLS
VR702 VR706
C703 C700 C701 C704
F704
F701
7 3 IN 3
7 OUT
OUT IN CAMD(6)
8 4 8 IN 4
OUT
OUT IN CAM_VSYNC CAMD(4)
9 5 5
9 OUT IN
OUT IN CAMD(2)
LCD_RS
10 6 IN 6
10
OUT IN CAMD(0) OUT
LCD_WRn
G G G G
1 2 1 2
F705 F703
IN 3 3
7 OUT 7 OUT IN
CAMD(1)
IN 4 4
8 8 OUT
OUT CAMD(3) IN
LCD_CSn
5 IN 5
9 OUT IN 9 OUT
CAM_HSYNC CAMD(5)
6 6
10 OUT IN 10 OUT IN
CAMD(7)
G G G G
1 2 1 2
C530
C529
C528
R700
C527
C700
R702
F706 F705 F703
C702 C708
R707
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Check C709
Check C701
CAM_D(6)
CAM_D(4)
CAM_D(2)
CAM_D(0)
CAM_D(1)
CAM_D(3)
CAM_D(5)
CAM_D(7)
C534
R527
C538
R516
C526
L500
C520
C704
C539
C503
R703
C512 C505
C547 C325
10-15
Flow Chart of Troubleshooting