LG LG400GT, Service Manual

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1

ID

Voltage

11

F

A

C

HIGH

1.8V

R_MIN : 180K -> 61mA

A

2

9

4

C

F

15

2

CHARGING

E

E

D

1

5

16

D

10

12

8

D

4

GP(NOVATEK)

LOW

6

D

0V

GP(NOVATEK)

LCD CONNECTOR

C

8

BATTERY CONNECTOR

INDICATOR LED SWITCH

VIBRATOR

FOLDER SENSE

E

3

B

6

R_REF : 27K -> 450mA

F

5

(10V,Z,Y5V)

C

(2012)

14

I/O CONNECTOR

13

3

9

E

MAKER

(50V,J,NP0)

B

NA

7

7

2.2K

R352

R377

47

INOUT_A1

INOUT_A2

2

INOUT_A3

3

4

INOUT_A4

INOUT_A5

5

6

INOUT_A6

INOUT_B1

13

12

INOUT_B2

11

INOUT_B3

INOUT_B4

10

9

INOUT_B5

INOUT_B6

8

FL301

ICVE31186E150R101FR

G1

7

G2

14

1

FB2

100nH

L300

R419

0

C301

47p

VBAT

0

R358

0

R376

VA307

EVLC14S02050

VA300

C313

0.1u

C305

120p

C312

R420

NA

1u

C303

VA308

1u

180K

R317

47p

C316

0

R321

R328

FB1

100K

NA

R365

C326

4.7u

2

3

VBAT

CN300

1

R353

NA

FB3

VA302

R319

4.7K

100K

V_IO

R329

VCHG

10K

R326

33u

1000p

C307

C324

56p

V_EXTH

V_IO

C327

C310
0.1u

100K

R324

VA305

VBAT

V_IO

10K

V_BACKUP

V_IO

VA304

R325

R322

0

NA

C314

8

BAT

5

GND

IMIN

6

IREF

7

9

PGND

VIN

1

3

_CHG

_EN

4

2

_PPR

ISL6294

U300

22u

2.2K

R331

VBAT

C317

C325

2200p

47

R378

NA

R303

NA

R327

C304

R369

47

V_IO

1u

C315

0.1u

8
9

20K

R309

13
14
15
16
17
18

19

2

20

21

22

3
4
5
6
7

CN302

1

10
11
12

330

R330

33u

C300

C308

INOUT_B2

12

INOUT_B3

11

10

INOUT_B4

INOUT_B5

9

8

INOUT_B6

VCHG

27p

ICVE31186E150R101FR

FL300

7

G1

14

G2

INOUT_A1

1

2

INOUT_A2

3

INOUT_A3

INOUT_A4

4

5

INOUT_A5

INOUT_A6

6

13

INOUT_B1

HSMICBIAS

V_IO

R316

33K

27p

0.1u

C309

2

Q1_B

6

Q1_C

1

Q1_E

Q2_B

5

Q2_C

3

Q2_E

4

C306

VBAT

V_IO

Q301

R359

NA

R357

NA

VA306

UMX1NTN

Q300

2

56

31

4

47K

R323

22

23

24

R364

0

6
7
8
9

16

25

26

27

28

29

30

17

18

19

20

21

CN301

1

10
11
12
13
14
15

2
3
4
5

VA301
EVLC14S02050

VA303

EM-0781-T5

U301

3

NC

2

OUT

1

VDD

4

VSS

R414

4.7K

27K

R318

VBUS_USB

47

R368

NA

R356

C311
NA

C302

18p

10K

R302

10u

R354

2.2K

C328

MOTOR_P

MOTOR_P

LCD_ID

IND_LED_B

IND_LED_R

LED_B_EN

LED_R_EN

LCD_D(2)

LCD_D(1)
LCD_D(0)

LCD_ADS

IND_LED_B

LCD_D(0:7)

VIB_EN

FOLDER

SPK_RCV_P
SPK_RCV_N

IND_LED_R

_LCD_WR

_LCD_CS

LCD_RESET

MLED2
MLED1
VRWLED

LCD_D(7)
LCD_D(6)
LCD_D(5)
LCD_D(4)
LCD_D(3)

CHG_STATUS

CHG_EN

UART_DSR

HSMIC

TMS

TCK

TDI

TDO_ARM

JACK_DETECT

HSOL

USB_DM

USB_DP

RPWON

UART_TX
UART_RX

BATT_TEMP

7. CIRCUIT DIAGRAM

LGE Internal Use Only

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Only for training and service purposes

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