LG F1200 Service Manual page 60

(11) Camera Trouble
In F1200, Camera Back-End-chip is applied for camera flow control and power control
respectively.
The full scheme is shown in Figure 26.
CAMERA
FB400
C415
C414
10u 0.1u
LCD_D(0:7)
LCD_D(0)
LCD_D(1)
LCD_D(2)
LCD_D(3)
LCD_D(4)
LCD_D(5)
LCD_D(6)
LCD_D(7)
LCD_CS
LCD_WR
LCD_RD
LCD_ADS
R565
A(1)
R566
A(2)
D(0:15)
The U507 is Camera Application processor. (Corelogic's CL761A) It also supports 80-type LCD
interface. It has 16-bit 80-type Parallel Host I/F and supports up to VGA resolution. If C_hold go
to low, camera-system is operated. Camera-power is on and the initial setting and mode
changing of camera module is done through I2C Bus by U507. Camera power system is
controlled by the C_pwon pin of U507 which go to low and Operating Voltage is 2.8V.
• Check Points
- Check the power supply.
- Check the soldering of Components
- Check the CAMERA signals
• Trouble Shooting Setup
- Enter the engineering mode.
- Go to menu 'Baseband ➝ Camera'
SI1305
Q401
TP514 TP516
C416
27p
L2
L_RESET_N
L10
L_DA0
J9
L_DA1
K10
L_DA2
H8
L_DA3
H9
L_DA4
J10
L_DA5
G10
L_DA6
G9
L_DA7
G8
L_DA8
F8
L_DA9
F10
L_DA10
E10
L_DA11
F9
L_DA12
D10
L_DA13
E9
L_DA14
C10
L_DA15
H2
L_DA16
G1
L_DA17
L1
L_CS_N
K2
L_WR_N
K1
L_RD_N
K3
L_ADS
K9
TP508
LS_CS_N
0
0
TP515
VDDS
VDDL
VDDI1
VDDI2
VDDC1
VDDC2
VDDC3
VDDC4
U507
GNDI1
CL761A
GNDI2
GNDI3
GNDI4
GNDC1
GNDC2
GNDC3
GNDC4
GNDC5
XIN
XOUT
Figure 26.
- 59 -
4. TROUBLE SHOOTING
CAM_D(7)
CAM_D(6)
CAM_D(5)
CAM_D(4)
CAM_D(3)
CAM_D(2)
CAM_D(1)
CAM_D(0)
CAM_SCK
CAM_SDA
CAM_PCLK
CAM_RST
CAM_HS
CAM_VS
CAM_MCLK
2.8V_DSP
C564 C565
C574
K5
0.1u 0.01u
J2
B9
C7
A8
A10
D2
H10 4.7u
B2
E8
J3
K6
A5
B5
C5
F2
L5
A2
CAM_CLK
A1
R560 0
TP519
LCD_RST
TP518
C_HOLD
TP517
C_INT
_WR
_RD
L_CS