Erisson 15LJ18, 19LJ08, 22LDJ08 Schematic

LC D-T V Ser vic e Man ual

15”19”22” LCD COLOR TV

Service Manual

MODEL NO.:

L15372E2800/15LJ18 L19372E2800/19LJ08 L22372E2801/22LDJ08

LC D-T V Ser vic e Man ual

Contents

Safety Notice … ………………………………………………………………......03

Supported Operating Modes ………………………………………………..…...04

Specifications …………………………………………………………………..…06

Location and Function of Controls...........................................................09

Disassembly the Framework ……………………………………………….……12

Illustration of actual object ………………………………………….……………18 . Driver PCB Principle Diagram ………………………………………….…..…...26

DVD PCB Principle Diagram ………………………………………….…..….....35

Power PCB Circuit Diagram…………………………………………….…………36

Block Diagram......................................................................................40

Trouble Shooting Charts ……...…………………………………...……………43

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LC D-T V Ser vic e Man ual

Safety Notice

Warning

Be sure to read this manual before servicing .To assure safety from fire ,electric shock ,injury ,harmful radiation and materials, various measures are provided in this liquid crystal television/monitor. Be sure to read the cautionary items described in the manual to maintain safety before servicing.

TO REDUCE THE RISK OF

CA UT ION

RISK OF ELECTRIC SHOCK DO NOT OPEN

This symbol indicates “dangerous voltage” inside the product that presents a risk of electric shock or personal injury.

ELECTRIC SHOCK DO NOT REMOVE COVER.NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

This symbol indicates important instructions accompanying the product.

Service Warning

.The LCD Panel Module is made of glass. When handling broken LCD Panel

Module ,take special care not to be injured.

.Replacement work should only start after the LCD Panel Module and the AC/DC

Power Supply has become sufficiently cool.

.Take special care of the LCD display panel and do not damage its surface. .Do not touch the LCD Panel Module with your bare hands and protect its surface

from stains.

.It is recommended to use clean soft gloves during servicing in order to protect

the LCD display panel and the

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Supported Operating Modes(1)

L15372E2800/15LJ18

LC D-T V Ser vic e Man ual

(04)

Supported Operating Modes(2)

L19372E2800/19LJ08 L22372E2801/22LDJ08

LC D-T V Ser vic e Man ual

(04)

Specifications(1)

L15372E2800/15LJ18

LC D-T V Ser vic e Man ual

15’’

45W

380 X70X315

380 X135X364

2.7

3.8

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Specifications(2)

L19372E2800/19LJ08

LC D-T V Ser vic e Man ual

19’’

60W

480 X84X360

480 X175X392

4.6

5.7

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Specifications(3)

L22372E2801/22LDJ08

LC D-T V Ser vic e Man ual

22’’

70W

550X82X411

550X175X443

5.5

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Location and Function of Controls(1)

L15372E2800/15LJ18 L19372E2800/19LJ08

LC D-T V Ser vic e Man ual

NO.

Button Name

VOL+/-

CH+/-

Description

Note:

If there is no signal input for 5 minutes, the LCD TV will switch to standby automatically. The power indicator will light up in red.

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Location and Function of Controls(2)

L22372E2801/22LDJ08

LC D-T V Ser vic e Man ual

OPE N

PLAY

STOP

1212

1010

OPEN

PLAY

STOP

1111

VOL+/-

CH+/-

Note: If there is no signal input for 5 minutes, the LCD TV will switch to standby automatically. The power indicator will light up in red.

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Location and Function of Controls(3)

L15372E2800/15LJ18 L19372E2800/19LJ08 L22372E2801/22LDJ08

LC D-T V Ser vic e Man ual

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LC D-T V Ser vic e Man ual

Disassembly the Framework(1)

Please follow the following stops to disassemble the unit :

Warning:

All material parts and screws must be installed on its corresponding position correctly ,otherwise it may cause damage. All the connection cable must be disconnected otherwise it may cause damage.

Warning :

Disassemble the unit only should be handled by qualified service personnel ! Assembly and disassembly must be noted to protect cabinet to avoid scratch and damage.

L15372E2800/15LJ18

1、 Disassemble the rear cabinet:

1.1、Unfasten the 4 screws B（BM4×10 ）, take out the stand from the TV;

1.2、Unfasten the 9 screws D（ BST3×10),2screws C(BM3X6), and the 4 screws D（BST3X6 ）, uninstalling the back cover .

Warning： When remove the stand bracket, please be careful of the LCD panel should not be contacted any edge and firm or corrosive object, they may case scratch and damage.

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Disassembly the Framework(1-1)

L15372E2800/15LJ18

2、Disassemble PCB assembly and rear cabinet:

2.1、Uninstall the Connection cable with Drive PCB1、Power PCB2、 Key PCB3、Remote PCB4 ;

2.2、Unfasten 4 Screws of D（BST3×10 ), and take out the Drive PCB1；

2.3、Unfasten 4 screws of D（BST3×10 ) ,and take out the Power PCB2;

2.4、Unfasten 4 screws of D（BST3×10 ) ,and take out the LCD Panel.;

LC D-T V Ser vic e Man ual

Drive PCB(1)

key PCB(3)

Remote PCB(4)

Power PCB(2)

LCD Panel

(02)

Warning：When Disassemble the Drive PCB and Power PCB , please be careful of avoiding the connector pins to be flexed.

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LC D-T V Ser vic e Man ual

Disassembly the Framework(2)

Please follow the following stops to disassemble the unit :

Warning:

All material parts and screws must be installed on its corresponding position correctly ,otherwise it may cause damage. All the connection cable must be disconnected otherwise it may cause damage.

Warning :

Disassemble the unit only should be handled by qualified service personnel ! Assembly and disassembly must be noted to protect cabinet to avoid scratch and damage.

L19372E2800/19LJ08

1、 Disassemble the rear cabinet:

1.1、Unfasten the 4 screws B（BM4×12 ）, take out the stand from the TV;

1.2、 11 uninstalling the back cover .

Warning： When remove the stand bracket, please be careful of the LCD panel should not be contacted any edge and firm or corrosive object, they may case scratch and damage.

Unfasten the screws D（ BST3×10), and the 4 screws D（BST3X8 ）,

D D

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LC D-T V Ser vic e Man ual

Disassembly the Framework(2-1)

L19372E2800/19LJ08

2、Disassemble PCB assembly and rear cabinet:

2.1、Uninstall the Connection cable with Drive PCB1、Power PCB2、 Key PCB3、Remote PCB4;

2.2、Unfasten 11 Screws of D（BST3×10), and take out the Cabinet Front and LCD Panel；

2.3、Unfasten 4 Screws of D（BST3×10 ), and take out the Drive PCB1；

2.4、Unfasten 4 screws of D（BST3×10 ) ,and take out the Power PCB2;

Drive PCB(1)

key PCB(3)

Remote PCB(4)

Power PCB(2)

Warning：When Disassemble the Drive PCB and Power PCB ,

please be careful of avoiding the connector pins to be flexed.

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LC D-T V Ser vic e Man ual

Disassembly the Framework(3)

Please follow the following stops to disassemble the unit :

Warning:

All material parts and screws must be installed on its corresponding position correctly ,otherwise it may cause damage. All the connection cable must be disconnected otherwise it may cause damage.

Warning :

Disassemble the unit only should be handled by qualified service personnel ! Assembly and disassembly must be noted to protect cabinet to avoid scratch and damage.

L22372E2801/22LDJ08

1、 Disassemble the rear cabinet:

1.1、Unfasten the 4 screws B（BM4×12 ）, take out the stand from the TV;

1.2、Unfasten the 12 screws D（ BST3×10), and the 4 screws D（BST3X8）, uninstalling the back cover .

Warning： When remove the stand bracket, please be careful of the LCD panel should not be contacted any edge and firm or corrosive object, they may case scratch and damage.

D D

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