LG Electronics 32LT360C-ZA service manual 12V EXT PowerOut, RS232C, LGE Internal Use Only

RS232C
					10
					5
					9
				IR_OUT	4
				R1123	8
				100	JP1121
					3
				R1124	7
			+3.5V_ST
				100	JP1122
					2
			D1107	D1108	6
			CDS3C30GTH	CDS3C30GTH	1
			30V	30V
			OPT	OPT
				EXT_12V
C1101 0 . 3 3 u F					SPG09-DB-009
		IC1101	C1106		JK1101
		MAX3232CDR
			0 . 1 u F
				+3.5V_ST
	C1+		VCC
	1	16		D1100	R1100
C1102				BAP70-02
					1K
0 . 1 u F	V+		GND
	2	15		50V
C1103
0 . 1 u F	C1-		DOUT1
	3	14
	C2+	13	RIN1
	4
C1104
0 . 1 u F	C2-		ROUT1
	5	12			PM_RXD
	V-	11	DIN1
	6				PM_TXD
C1105
0 . 1 u FDOUT2		10	DIN2
	7
	RIN2	9	ROUT2
	8
		EAN41348201

DC DC CONVERTER +12V_ONLY PSU

(For External power)

PSU_POWER_OUT

R52

100K

PSU_POWER_OUT

Switching noise reducing [MPS recommend]

C51

50V

0 . 1 u F

R54

PSU POWER OUT

+24V

IC50

22

MP4460DQ-LF-Z EP_GND

MBRA340T3G

c l o s e

t o p i n

SW_1

BST

1

10

PSU_POWER_OUT

THERMAL

PSU_POWER_OUT

+12V

SW_2

11

VIN_2

2

9

PSU_POWER_OUT

D50

C54

EN

VIN_1

C55

3 . 3 u F

0 . 1 u F

3

8

PSU_POWER_OUT

R53

50V

50V

PSU_POWER_OUT

COMP

$0.21

FREQ

200K

4

7

PSU_POWER_OUT

PSU_POWER_OUT

1/8W

C50

FB

GND

1%PSU_POWER_OUT

R56

R57

150pF

PSU POWER OUT R51 150K

5

6

270K

10K

R50 18K

50V

PSU POWER OUT

1/10W

PSU POWER OUT

1/16W

1/16W

1%

1%

R55

20K

1/16W 1%

L50	PSU_POWER_OUT		PSU_POWER_OUT
22UH		C52
			C53
PSU_POWER_OUT		22uF
		25V	0 . 1 u F
			50V

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES

SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.

FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS

ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR

THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

12V EXT PowerOut

POWER_OUT

R65

43

IC52

MP5000DQ

POWER_OUT

GND

SOURCE_5

EXT_12V

1

10

C61

POWER_OUT

470pF

DV/DT

SOURCE_4

50V

POWER_OUT

2

9

R63

L54

SOURCE_3

CB3216PA501E

1K

ENABLE/FAULT

EXT12V_CTRL

3

8

POWER_OUT

I-LIMIT

SOURCE_2

C64

C65

4

7

22uF

0 . 1 u F

50V

16V

NC

POWER_OUT

POWER_OUT

SOURCE_1

5

6

11

VCC

+12V

+12V/+15V

2.4K

1/16W 5%

L51

POWEROUT

R68

CB3216PA501E

LIPS_POWER_OUT

POWER_OUT_ON_SEMI

C62

C63

IC51 - *1

POWER_OUT

1uF

22uF

16V

16V POWER_OUT

R66

100K

NCP803SN293

A2

A1

POWER_OUT

VCC

3

2 RESET

D51

1

POWER_OUT

POWER_OUT_DIODES

C

GND

IC51

APX803D29

VCC

3

2

RESET

R64

100

EXT_PWR_DET

1

POWER_OUT

R67

C56

GND

1.2K

0 . 1 u F

1/16W

16V

OPT

POWER_OUT

GP3_S7LR

20110324

RS232C_9PIN

10

Copyright © 2012 LG Electronics. Inc. All rights reserved.	LGE Internal Use Only
Only for training and service purposes