4.8 Camera Trouble. LG KG291, KG290

4.8 Camera Trouble

TEST POINT

4. TROUBLE SHOOTING

Figure 16

U400(AIT813G)

Figure 17

Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 77 LGE Internal Use Only

4. TROUBLE SHOOTING

Camera Trouble

CIRCUIT

CAMERA CONNECTOR

2V8_IOVDD

C_SCK

C_SDA

R402

4.7K

R403

4.7K

C402

NA

C411

NA

1

2

3

4

FL400ICVE21184E070R100

9

INOUT_A1 INOUT_B1

INOUT_A2

8

7

INOUT_A3

INOUT_B2

INOUT_B3

6

INOUT_A4 INOUT_B4

MULTIMEDIA IC

3V3_MUSB VUSB VGP

R400

NA

R401

0

C405

0.1u

3V3_MUSB

C_VS

C_HS

C_MCLK

C_PCLK

3

4

1

2

ICVE21184E070R100

FL403

INOUT_A1

INOUT_A2

INOUT_B1

INOUT_B2

INOUT_A3

INOUT_A4

INOUT_B3

INOUT_B4

7

6

9

8

2V8_IOVDD

C412

NA

C416

NA

ELCO,24PN,14-5602-024-000-829

5

6

7

1

2

3

4

10

11

8

9

12

CN400

ENBY0019101

18

17

16

15

14

13

24

23

22

21

20

19

6

7

8

9

INOUT_B4 INOUT_A4

INOUT_B3 INOUT_A3

4

3

INOUT_B2 INOUT_A2

2

INOUT_B1 INOUT_A1

FL401

ICVE21184E070R100

1

R406

C414

47p

100ohm

C415

47p

C_RST

C_CD04

C_CD05

C_CD06

C_CD07

FL402

ICVE21184E070R100

1

2

3

4

INOUT_A1

INOUT_A2

INOUT_A3

INOUT_A4

INOUT_B1

9

INOUT_B2

8

7

INOUT_B3

6

INOUT_B4

C_CD00

C_CD01

C_CD02

C_CD03

2V8_MV

C400 C401

1u 39p

2V8_MV 1V8_VCAM

SCK

C406 C407

39p 1u

C408 C409

39p 1u

C417

1u

CAMERA LDO

VBAT

CAM_PWR_EN

R414

NA

C426

1u

U401

RT9011-MGPQW

1

2

VIN

EN1

3

4

EN2

NC1

VOUT1

VOUT2

NC2

GND

8

7

6

5

1V8_DVDD

C427

1u

2V8_AVDD

R412

10 C418

0.1u

C419

10u

R413

10 C423

0.1u

C424

10u

2V8_IOVDD

C428

1u

_MAIN_CS

MULTI_USB-

MULTI_USB+

C413

33p

_RD

_WR

A3

A2

A1

B3

B2

B4

B5

B1

PUSBDN

PUSBDP

VDD_IO3

GND_IO3

_PHCS

_PHRD

_PHWE

_PRST

_MULTI_RST

2V8_MV

2V8_MV

DATA00

DATA01

DATA02

DATA03

DATA04

DATA05

DATA06

DATA07

DATA08

DATA09

DATA10

DATA11

DATA12

DATA13

DATA14

DATA15

R411

75K

MULTI_BYPASS

ADD01

_MULTI_INT

_WAIT

13M_AIT

C420 1000p

D5

E2

A7

E3

TP400

B7

E4

F1

F2

C5

D2

D3

E1

B6

C1

C2

C3

D1

C4

PHD0

PHD1

PHD2

PHD3

PHD4

PHD5

PHD6

PHD7

PHD8

PHD9

PHD10

PHD11

PHD12

PDH13

PHD14

PHD15

PHD16

PHD17

TP401

TP402

C425

C7

D6

F3

G1

F4

G2

A5

C6

D4

PHLCD_BY

PHLCD_A0

_PHLCD2_CS

PHINT

_PHGPIO_CS

_PHWAIT

PMCLK

VDD_IO0

GND_IO0

2V8_MV

C429

1u

U400

AIT813G

PGPIO25

PGPIO24

PGPIO23

PGPIO22

PGPIO21

PGPIO20

PGPIO19

PGPIO18

PGPIO17

PGPIO16

PGPIO15

PGPIO14

PGPIO13

PGPIO12

PGPIO11

PGPIO10

PGPIO9

PGPIO8

PGPIO7

PGPIO6

PGPIO5

PGPIO4

PGPIO3

PGPIO2

PGPIO1

PGPIO0

D8

C9

B10

D9

C10

A11

A12

B11

C11

E9

F9

D10

B12

E10

D11

C12

F10

G9

E11

D12

H9

G10

F11

H10

E12

J9

GND_IO2

VDD_IO2

_PLCD2_CS

_PLCD1_CS

_PLCD_RD

PLCD_A0

_PLCD_WE

PLCD17

PLCD16

F8

G8

M8

M9

M7

L9

L8

M6

L7

VSYNCOUT

R410

NA

C_RST

TF_DATA3

TF_DATA2

TF_DATA1

TF_DATA0

TF_CMD

TF_CLK

L_MAIN_LCD_CS

LCD_RS

LCD_WR

2V8_MV

C421

39p

C422

1u

TP403

2V8_AMV

C430

39p

C431

1u

LGE Internal Use Only - 78 Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

4. TROUBLE SHOOTING

CHECKING FLOW

START

Does the LCD itself

Has no trouble ?

YES

Change the camera module, Does it work properly ?

YES

Itís camera moduleís problem

Replace the camera module

NO

NO

Go to the LCD trouble

Check the voltage of pin 8 of

U401 is 2.8V ?

YES

NO

Check the voltage of pin 1 of

U401 LOW ?

YES

Replace the U401

Check the signals of the

FL400~FL403

YES

NO

Replace

FL400~FL403

Camera will work properly

Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

- 79 LGE Internal Use Only