AOC 2009v Service Manual

20" LCD Color Monitor

HP 2009v

Service

Service

Service

Horizontal Frequency

24 – 85 KHz

TABLE OF CONTENTS

Description Page

Table of Contents.......…..................................…........1

Revision List.…..............................................……......2

1.Monitor Specification............................………........3

2.LCD Monitor Description…..…………………….......4

3.Operation Instructions……..…..............……...........5 3.1 General Instructions...............................…...........5 3.2 Control Buttons………….….............……..............5 3.3 Adjust the Picture..................................…............6

4.Input/Output Specification......……...………............9 4.1 Input Signal Connector...............………................9 4.2 Factory Preset Display Modes.........…..................9 4.3 Power Supply Requirements.................................9

5.Panel Specification.....……...…………..................10 5.1 General Feature…..............................................10 5.2 Electrical Characteristics……………..…………..10

5.3 Optical Characteristics……….……………………11

6. Block Diagram…..…...................………................13

Description

Page

6.1Software Flow Chart……………….………………...13

6.2Electrical Block Diagram……...…………..…...........15 7. Schematic…………….…..........................................17

7.1Main Board..………….............................................17

7.2Power Board.………………....................................23

7.3Key Board.…………....……....................................26 8. PCB Layout…...……..…...........................................27

8.1Main Board………………........................................27

8.2Power Board………................................................29

8.3Key Board………............……….….........................30 9. Maintainability………................................................31

9.1Equipments and Tools Requirement.......................31

9.2Trouble Shooting………...…...................................32 10. White-Balance, Luminance Adjustment….………..38 11. Mechanical Instructions……………….….....….......40 12. Monitor Exploded View…….... ……..……....….......44 13. BOM List……….……….…………..…………………46

SAFETY NOTICE

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

1

20" LCD Color Monitor				HP 2009v
			Revision List
	Version	Date	Revision History	TPV Model Name
	A00	May-22-09	Initial release	TARSABNB5WHPAN

2

20" LCD Color Monitor

HP 2009v

1. Monitor Specification

3

20" LCD Color Monitor

HP 2009v

2. LCD Monitor Description

The LCD Monitor will contain a main board, a power board, a key board and which house the flat panel control logic, brightness control logic and DDC.

The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.

Monitor Block Diagram

		CCFT Drive.			Flat Panel and
					CCFL backlight
Power Board				Main Board
(Include adapter, inverter board)
							Video signal, DDC
				Key board
AC-IN
						HOST Computer
100V-240V

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20" LCD Color Monitor

HP 2009v

3. Operation Instructions

3.1 General Instructions

Press the power button to turn the monitor on or off. The other control buttons are located at front of the panel. By changing these settings, the picture can be adjusted to your personal performance.

-The power cord should be connected.

-Connect the video cable from the monitor to the computer VGA card.

-Press the power button to turn on the monitor, the power indicator will light up to Aqua-blue.

3.2Control Buttons

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20" LCD Color Monitor

HP 2009v

3.3 Adjust the Picture

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20" LCD Color Monitor

HP 2009v

7

20" LCD Color Monitor

HP 2009v

8

20" LCD Color Monitor				HP 2009v
4. Input/Output Specification
4.1 Input Signal Connector
	Pin No.	Description	Pin No.	Description
1		Red Video	9	3.3/+5 V (from PC)
2		Green Video	10	Sync Ground
3		Blue Video	11	None
4		None	12	DDC Data
5		Ground (DDC Return)	13	Horizontal Sync
6		Red GND	14	Vertical Sync
7		Green GND	15	DDC Clock
8		Blue GND

VGA connector layout

PIN 1	PIN 5
PIN 11

4.2 Factory Preset Display Modes

4.3 Power Supply Requirements

Parameter	Range
AC Input Voltage	90 to 265V
AC Input Frequency	45 to 63 Hz
Inrush Current	50A at 220VAC and 30A at 120VAC
Leakage Current	300mA Max at 120VAC

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20" LCD Color Monitor

HP 2009v

5. Panel Specification

LTM200KT01 is a color active matrix liquid crystal display (LCD) that uses amorphous silicon TFT (Thin Film Transistor) as switching components. This model is composed of a TFT LCD panel, a driver circuit and a back light unit. The resolution of a 20.0” is 1600 x 900 and this model can display up to 16.7 millions solors.

5.1 General Feature

5.2 Electrical Characteristics

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20" LCD Color Monitor

HP 2009v

5.3 Optical Characteristics

Ta= 25±2°C, VDD=5V, fV=60Hz, fDCLK=59.1MHz, IL=6.5mArms

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20" LCD Color Monitor

HP 2009v

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20" LCD Color Monitor

HP 2009v

6. Block diagram

6. 1 Software Flow Chart

1

Y

2 3

N

4

5	N
Y
6

N

7 8

Y

9

	10	N	11
	Y
N	12		13	N
	Y		Y
	14		15	N
				16
			Y
			17

18 N 19

Y

13

20" LCD Color Monitor

HP 2009v

Remark:

1)MCU initialize.

2)Is the EEprom blank?

3)Program the EEprom by default values.

4)Get the PWM value of brightness from EEprom.

5)Is the power key pressed?

6)Clear all global flags.

7)Are the AUTO and SELECT keys pressed?

8)Enter factory mode.

9)Save the power key status into EEprom. Turn on the LED and set it to green color. Scalar initialize.

10)In standby mode?

11)Update the lifetime of back light.

12)Check the analog port, are they’re any signals coming?

13)Does the scalar send out an interrupt request?

14)Wake up the scalar.

15)Are there any signals coming from analog port?

16)Display "No connection Check Signal Cable" message. And go into standby mode after the message disappear.

17)Program the scalar to be able to show the coming mode.

18)Process the OSD display.

19)Read the keyboard. Is the power key pressed?

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20" LCD Color Monitor

HP 2009v

6.2 Electrical Block Diagram

6.2.1 Main Board

LCD Interface

(CN402)

	Flash ROM
					Scalar TSUMU18ER3
	PM25LV020
					(Include: MCU, ADC, OSD etc)						Crystal
	(U402)
						(U401)					14.318MHz
											(X401)
	Key control Interface
	(CN401)
								EEPROM
					EEPROM
								AT24C04BN
					M24C02
								(U403)
					(U104)

D-SUB Connector

(CN101)

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20" LCD Color Monitor

HP 2009v

6.2.2 Power Board

AC input

Main

100V~240V

5V

Output

VEMI filter

Rectifier

Transformer

Board/Inverter

Rectifier

16V

Circuit

Power Switching

PWM Control IC

Sense Resistor

Photo Couple Sampling

16V DC Switching MOS Transformer Resonance NET High Voltage Output

IC Power Supply

PWM Control IC Open Lamp Protection

Converter

Current Sampling

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20" LCD Color Monitor

HP 2009v

7. Schematic

7.1 Main Board

715G3281 1

TSUMU18ER3 SCHEMATIC

LVDS OUTPUT

DSUB_R+

DSUB_R+

VCC1.8

DSUB_R-

DSUB_R-

DSUB_G+

DSUB_G+

VCC3.3

DSUB_G-

DSUB_G-

VCC1.8

DSUB_SOG

DSUB_SOG

CMVCC

DSUB_B+

DSUB_B+

DSUB_B-

DSUB_B-

VCC3.3

DSUB_H

DSUB_H

DSUB_V

DSUB_V

VCC3.3

DDC1_SDA

DDC1_SDA

CMVCC

DDC1_SCL

DDC1_SCL

DET_CABLE

DET_CABLE

VCC3.3

DDC_WP

DDC_WP

AudioSelf test_L

AudioSelf test_L

AudioSelf test_R

AudioSelf test_R

02.Input

06.Audio

VCC1.8

CMVCC

MUTE

MUTE

VCC3.3

PA[0..1]

VOLUME

VOLUME

PA[0..1]

PA[0..1]

VCC1.8

PA[4..9]

CMVCC

on_BACKLIGHT

on_BACKLIGHT

PA[4..9]

PA[4..9]

PB[0..9]

CMVCC

VCC3.3

PB[0..9]

PB[0..9]

BKLT_VBRI

BKLT_VBRI

PPWR_ON#

PPWR_ON#

CMVCC

05.Power

03.Scalar

04.Output

T P V ( Top Victory Electronics Co . , Ltd. )

OEM MODEL

Size

A

TPV MODEL

Rev

E

Key Component

01.TOP

PCB NAME

715G3281-E

< >

Date

Friday , December 05, 2008

Sheet

1

of 6

17

20" LCD Color Monitor

HP 2009v

5 DDC1_SCL

5 DDC1_SDA

H_Sy nc

R101

0R05 1/10W 5%

R102

1K 1/16W 5%

DSUB_H

5

V_Sy nc

R103

1K 1/16W 5%

FB101

DSUB_V

5

R104

C102

ESD_VCC

VGA_B+

1

2

DSUB_B+ 5

R105

R106

C101

C103

BEAD

0.047uF

2K2 1/16W 5%

2K2 1/16W 5%

100R 1/16W 5%

22pF

22pF

R107

C104

75R 1/16W 5%

5pF/50V

R108

R109

VGA_B-

R110

C105

4K7 1/16W 5%

4K7 1/16W 5%

CN101

DSUB_B-

5

16

100R 1/16W 5%

0.047uF

R111

10

100R 1/16W 5%

VGA_PLUG

DSUB_5V

DDC1_SCL

DSUB_SCL

15

5

R112

C106

14

9

DSUB_5V

4

2

2

DSUB_SOG 5

R113

13

8

VGA_B-

470R 1/16W 5%

1000pF

3

VGA_B+

ZD101

ZD102

100R 1/16W 5%

7

VGA_G-

DDC1_SDA

DSUB_SDA

12

2

VGA_G+

RLZ5.6B

RLZ5.6B

FB102

R114

C107

11

6

VGA_R-

VGA_G+

1

2

1

VGA_R+

1

1

DSUB_G+ 5

BEAD

100R 1/16W 5%

0.047uF

17

R115

C108

75R 1/16W 5%

5pF/50V

VGA_G-

R116

C109

DSUB_G- 5

100R 1/16W 5%

0.047uF

FB103

R117

C110

GND POWER

DGND

VGA_R+

1

2

DSUB_R+ 5

BEAD

100R 1/16W 5%

0.047uF

R118

C111

75R 1/16W 5%

5pF/50V

U101

ESD_VCC

VGA_R-

R119

C112

DSUB_R-

5

DSUB_SCL

1

6

H_Sy nc

100R 1/16W 5%

0.047uF

I/O1 I/O4

2

GNDVDD

5

DSUB_SDA

3

I/O2 I/O3

4

V_Sy nc

DSUB_5V CMVCC

AZC099-04S

C113

NC

ESD_VCC

2

1

D101

VCC3.3

U102

ESD_VCC

BAV70

VCC3.3 5,7

VGA_R+

1

I/O1 I/O4

6

VGA_B+

2

GNDVDD

5

3

VGA_G+

3

I/O2 I/O3

4

R120

R121

AZC099-04S

C114

C115

10K 1/16W 5%

10K 1/16W 5%

NC

0.22uF16V

U104

VGA_PLUG

DET_CABLE 5

close to U102

1

A0

VCC

8

2

A1

WP

7

DDC_WP 5

3

A2

SCL

6

DDC1_SCL

4

VSS SDA

5

DDC1_SDA

M24C02-WMN6TP

DGND

T P V ( Top

Victory Electronics Co . , Ltd. )

OEM MODEL

Size

B

TPV MODEL

Rev

E

Key Component

02.Input

PCB NAME

715G3281-E

< >

Date

Monday , December 22, 2008

Sheet

2 of

6

18