HCL HCM9LWAT11 Servise Manual

19"W LCD Color Monitor HCL HCM9LWAT11

1

Service

Service

Service

Horizontal Frequency

30-80 kHz

TABLE OF CONTENTS

Description

Page Description Page

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.

Table Of Contents…………………………………………...1

Revision List………………………………………………....2

Important Safety Notice.…….........................……...... 3

1. Monitor Specification..............................…………........4

2. LCD Monitor Description…………………………….......5

3. Operation Instructions....................................…...........6

3.1. General Instructions...........................…....................6

3.2. Control Buttons..………………………….…...............6

3.3 Adjusting the Picture.................................…..............7

4. Input/Output Specification............……………...............9

4.1. Input Signal Connector............…………....................9

4.2. Factory Preset Display Modes......….........................9

4.3. Panel Specification.....………………........................10

5. Block Diagram….........................................................13

5.1 Software Flow Chart………………………….……….13

5.2.Electrical Block Diagram…………………….......15

6. Schematic……………..............................................17

6.1 Main Board....……….............................................17

6.2 Power Board………………………………………....22

6.3 Key Board…………………...….……………………24

6.4 Audio Board…………….……………………………25

7. PCB Layout..………….............................................26

7.1. Main Board………................................................26

7.2. Power Board….....................................................28

7.3. Key Board….........................................................30

7.4. Audio Board…......................................................31

8. Maintainability………...............................................32

8.1.Equipments and Tools Requirement......................32

8.2.Trouble Shooting………........................................32

9. White-Balance, Luminance adjustment………..…...38

10. Monitor Exploded View…………………….…........40

11. BOM List…............................................................41

12. Different Parts List…………………………….…….57

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

19"W LCD Color Monitor HCL HCM9LWAT11

2

Revision List

Version Date Revision History TPV Model Name

T974MWDCWJKLAN

A00 Nov.-12-08 Initial release

T974MWDCWJKL8N

A01 Jan.-20-09 Add New BOM T97AMWDCWJKL8N

19"W LCD Color Monitor HCL HCM9LWAT11

3

Important Safety Notice

Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service

procedures recommended by AOC and described in this service manual are effective methods of performing service

operations. Some of these service operations require the use of tools specially designed for the purpose. The

special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in

order to minimize the risk of personal injury to service personnel. The possibility exists that improper service

methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE

NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in

which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not

undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not

recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the

equipment will be jeopardized by the service method selected.

Hereafter throughout this manual, AOC Company will be referred to as AOC.

WARNING

Use of substitute replacement parts, which do not have the same, specified safety characteristics may create shock,

fire, or other hazards.

Under no circumstances should the original design be modified or altered without written permission from AOC.

AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.

Servicer assumes all liability.

FOR PRODUCTS CONTAINING LASER:

DANGER-Invisible laser radiation when open AVOID DIRECT EXPOSURE TO BEAM.

CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may

result in hazardous radiation exposure.

CAUTION -The use of optical instruments with this product will increase eye hazard.

TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S

REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF

THIS SERVICE MANUAL.

Take care during handling the LCD module with backlight unit

-Must mount the module using mounting holes arranged in four corners.

-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to

the panel.

-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

-Make certain that treatment person’s body is grounded through wristband.

-Do not leave the module in high temperature and in areas of high humidity for a long time.

-Avoid contact with water as it may a short circuit within the module.

-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may

damage the panel.)

19"W LCD Color Monitor HCL HCM9LWAT11

4

1. Monitor Specification

Driving system TFT Color LCD

Size 48cm(19.0")

Pixel pitch 0.2835mm( H ) × 0.2835mm( V )

LCD Panel

Video R,G,B Analog Interface

Separate Sync. H/V TTL

H-Frequency 30kHz – 80kHz

Input

V-Frequency 55-75Hz

Display Colors 16.2M Colors

Dot Clock 135MHz

Max. Resolution 1440 × 900 @60Hz

Plug & Play VESA DDC2B

TM

ON Mode ≤37W

EPA ENERGY STAR®

OFF Mode ≤1W

Input Connector 15-pin D-Sub

Input Video Signal Analog:0.7Vp-p(standard), 75 OHM, Positive

Horizontal : 376.32mm

Maximum Screen Size

Vertical : 301.056mm

Power Source 100~240VAC,50~60Hz

Operating Temp: 5° to 50°C

Storage Temp.: -20° to 60°C

Environmental Considerations

Operating Humidity: 10% to 85%

Dimension 425(W)×418(H)×207(D)mm

Weight 4.8kg Unit (net)

Power Consumption( Maximum ) 37 Watts

Audio Output Rated Power 3.0W rms(Per channel)

19"W LCD Color Monitor HCL HCM9LWAT11

5

2. LCD Monitor Description

The LCD Monitor will contain main board, power board, key board and an audio board 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.

Video signal, DDC

Power Board

Flat Panel and

CCFL backlight

Main Board

RS232 Connector

For white balance

adjustment in

factory mode

HOST Computer

CCFT Drive.

AC-IN

100V~240V

Monitor Block Diagram

Key board

Audio board

19"W LCD Color Monitor HCL HCM9LWAT11

6

3. Operation Instructions

3.1 General Instructions

Press the power button to turn the monitor on or off. The other control buttons are located on the front panel of the

monitor. By changing these settings, the picture can be adjusted to your personal preferences.

• The power cord should be connected.

• Connect the video cable from the monitor to the video card.

• Press the power button to turn on the monitor position. The power indicator will light up.

3.2 Control Buttons

External Control Button

1. Auto Adjust Key/Exit

2. < / Volume

3. Power Key/ LED

4. > / Volume

5. MENU/ENTER

Front Panel Control

• Power Button / Power Indicator:

Press this button to turn the monitor ON or OFF.

Blue — Power On mode.

Orange — Off mode.

• MENU / ENTER :

Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD

menu when in Volume Adjust OSD status.

• > /Volume:

Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or

adjust a function when function is activated.

• < /Volume:

Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or

adjust a function when function is activated.

• Auto Adjust button / Exit:

1. When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu).

19"W LCD Color Monitor HCL HCM9LWAT11

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2. When OSD menu is in off status, press this button for 2 seconds to activate the Auto Adjustment function.

The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.

OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press

power button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is

off and then press power button to turn the monitor on.

3.3 Adjusting the Picture

• OSD Settings

1. Press the MENU-button to activate the OSD window.

2. Press < or > to navigate through the functions. Once the desired function is highlighted, press the MENU-button

to activate it. If the function selected has a sub-menu, press < or > again to navigate through the sub-menu functions.

Once the desired function is highlighted, press MENU-button to activate it.

3. Press < or > to change the settings of the selected function.

4. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-3.

The OSD Message

•

OSD functions

Main Menu

Item

Main

Menu

Icon

Sub Menu Item

Sub Menu

Icon

Description

Contrast

Contrast from Digital-register.

Luminance

Brightness

Backlight Adjustment.

Focus

Adjust Picture Phase to reduce Horizontal-Line

noise.

Image Setup

Clock

Adjust picture Clock to reduce Vertical-Line noise.

H. Position

Adjust the horizontal position of the picture.

Image Position

V. Position

Adjust the vertical position of the picture.

19"W LCD Color Monitor HCL HCM9LWAT11

8

Main Menu

Item

Main

Menu

Icon

Sub Menu Item

Sub Menu

Icon

Description

Warm N/A Recall Warm Color Temperature from EEPROM.

Cool N/A Recall Cool Color Temperature from EEPROM.

sRGB N/A Recall sRGB Temperature from EEPROM.

User / Red

Red Gain from Digital-register.

User / Green

Green Gain from Digital-register.

Color Temp.

User / Blue

Blue Gain from Digital-register.

Yes N / A

Auto Adjust the H/V Position, Focus and Clock of

picture.

Auto Config

No N/A

Do not execute Auto Config, return to main menu.

H. Position

Adjust the horizontal position of the OSD.

V. Position

Adjust the vertical position of the OSD.

OSD Setup

OSD Timeout

Adjust the OSD timeout.

Language

Language N/A Set OSD language.

Information

Information N/A

Show the resolution, H/V frequency and input port

of current input timing.

Yes N/A Clear each old status of Auto-configuration.

Reset

No N/A Do not execute reset, return to main menu.

Exit

N/A N/A Exit OSD.

19"W LCD Color Monitor HCL HCM9LWAT11

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4. Input/Output Specification

4.1 Input Signal Connector

Pin No.

Description

Pi N No.

Description

1. Red 9. +5V

2. Green 10. Detect Cable

3. Blue 11. Ground

4. Ground 12. DDC-Serial Data

5. Ground 13. H-Sync

6. R- Ground 14. V-Sync

7. G- Ground 15. DDC-Serial Clock

8. B- Ground

15 - Pin Color Display Signal Cable

15

6

10

11 15

4.2 Factory Preset Display Modes

Stand Resolution

Horizontal

Frequency(KHz)

Vertical

Frequency(Hz)

Dos-mode 720×400 31.47kHz 70.0Hz

640×480 31.47kHz 60.0Hz

VGA

640×480 37.50kHz 75.0Hz

800×600 37.879kHz 60.0Hz

SVGA

800×600 46.875kHz 75.0Hz

1024×768 48.363kHz 60.0Hz

1024×768 56.476kHz 70.0Hz

XGA

1024×768 60.021kHz 75.0Hz

1280 × 1024 64.000kHz 60.0Hz

SXGA

1280 × 1024 80.000kHz 75.0Hz

WXGA+ 1440×900 55.935 kHz 60.0 Hz

19"W LCD Color Monitor HCL HCM9LWAT11

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4.3. Panel Specification

4.3.1 General Feature

19"W LCD Color Monitor HCL HCM9LWAT11

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4.3.2 Optical Characteristics

19"W LCD Color Monitor HCL HCM9LWAT11

12

4.3.3 Electrical Characteristics

TFT LCD Module

·Power Specification

·Signal Electrical Characteristics

Backlight Unit

19"W LCD Color Monitor HCL HCM9LWAT11

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5. Block Diagram

5.1 Software Flow Chart

1

2

N

Y

5

Y

N

10

Y

N

12

Y

N

7

Y

N

6

4

3

8

9

14

11

13

Y

N

15

Y

N

16

17

19

Y

N

18

19"W LCD Color Monitor HCL HCM9LWAT11

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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 initializes.

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

disappears.

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?

19"W LCD Color Monitor HCL HCM9LWAT11

15

5.2 Electrical Block Diagram

Main Board

Crystal 14.318MHZ

(X401)

FLASH ROM

SST25LF020A

(

U402

)

Scalar TSUM16AWK-LF-1

(Include ADC, OSD, MCU)

(U401)

D-Sub Connector

(CN405)

Panel Interface

(CN101)

Key Button

(CN403)

EEPROM

M24C02-WMN6TP

(U404)

EEPROM

M24C16

(U403)

Audio Board

(CN404)

19"W LCD Color Monitor HCL HCM9LWAT11

16

Power Board

AC input

100V~240V

VEMI filter Rectifier

Transformer

Output

Rectifier

5V

12V

Main

Board/Inverter

Circuit

Power Switching

Sense Resistor

PWM Control IC

IC Power Supply

Photo Couple

Sampling

12V DC

Switching MOS

Transformer

Resonance NET

High Voltage Output

IC Power Supply

Converter

PWM Control IC Open Lamp Protection

Current Sampling

19"W LCD Color Monitor HCL HCM9LWAT11

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6. Schematic

6.1 Main Board

715G1558 1 BJ

Titl e

Size Document Number Rev

Date: Sheet

of

A

TOP

B

15Tuesday, December 19, 2006

+5V

+5V

TSUM16AWK-LF-1 SCHEMATIC

VCC3.3

PA[0..7]

PA[14..19]

PB[0..5]

PB[6..11]

GPO[0..4]

TPV（Top Victory）Electronics Co.,Ltd

VLCD_12V

VLCD_12V

PB[12..23]

G1558-1-BJ-X-5-061218

B3

3.INPUT

RIN

GIN

BIN

VSYNC

GNDR

GNDG

GNDB

DET_VGA

HSYNC

SOG

B+

CLK-

DET_DVI

CLK+

R+

G+

R-

B-

G-

DDCA_SDA
DDCA_SCL

DDCD_SDA
DDCD_SCL

+5V

DDC_WP

LVDS OUTPUTXGA/SXGA

B5

5.PANEL INTERFACE

VLCD

PA[0..7]

PA[8..13]

ESP

PA[14..19]

PB[0..5]

PB[6..11]

GPO[0..4]

OSP

VLCD_12V

PB[12..23]

B4

4.SCALER

RIN

GIN

SOG
BIN

GNDR

GNDG

GNDB
HSYNC
VSYNC

Adj_BACKLIGHT

VCC1.8

Vcc3.3

VCTRL

PA[0..7]

PA[8..13]

R+
R-

G-

G+

B+
B­CLK+
CLK­DDCD_SDA
DDCD_SCL
DET_DVI

DDCA_SDA
DDCA_SCL
DET_VGA

on_BACKLIGHT
on_Panel

+5V

PA[14..19]

PB[0..5]

PB[6..11]

GPO[0..4]

ESP

OSP

on_PANEL_12V

PB[12..23]

+12V

DDC_WP

B2

2.POW ER

on_Panel

on_BACKLIGHT

Adj_BACKLIGHT

+3V3
VCC1.8

VLCD

+5V

VCTRL

VCC3.3

on_PANEL_12V

VLCD_12V

+12V

VCC1.8

VCC3.3

+3V3

VLCD

VCC1.8

VLCD

TSUM16AWK

+12V

PA[8..13]

+12V

+5V

19"W LCD Color Monitor HCL HCM9LWAT11

18

C709

0.1uF 50V

+

C703
NC

VCC3.3

VCC3.3 4

R702
51Ω 1/10W

+

C710
100uF/25V

C711

0.1uF 50V

VCC1.8 4

VCTRL 4

VCC3.3 4

+5V

+5V3,4

R740
NC

R739
15KΩ 1/10W

3 2

1 Q707

NC

1 2

L702

120Ω

C727

0.1uF 50V

R705

4.7KΩ 1/10W

Q701
PMBS3904

R707

4.7KΩ 1/10W

R711
10KΩ 1/10W

2
4
6
8
10
12

1
3
5
7
9

11

CN701

CONN

Q709
NC

+

C717
10uF/50V

R717
10KΩ 1/10W

C715

0.022uF

11223

3

4

4

5

5

66778

8

9

9

H3

TP

C721

0.1uF 50V

GND

32

1 Q708

NC

R735

4.7KΩ 1/10W

Q704
AO3401

C724
NC

GND

R733

NC

R734

10KΩ 1/10W

R727

NC

GND

C701
NC

VI3VO

2

GND

1

VO

4

U701

NC

+5V +3V3

+

C704
NC

SOT-223

D702

SS14

C713

0.1uF 50V

D701

SS14

BL_ADJ

+3V3

R723
51 KOHM +- 5% 1/10W

D704

SS14

GND

R724
NC

GND

C722
NC

R736
NC

R737
NC

GND

C714

0.1uF 50V

TPV（Top Victory）Electronics Co.,Ltd

Q702
PZT2907A

+5V

adj_BACKLIGHT

4

on_PANEL

4

on_PANEL_12V

4

G1558-1-BJ-X-5-061218

For RSDS and Panel VCC=12V

123Q706

PMBS3906

VIN

3

ADJ

1

VOUT

2

U702

AIC1084-33PM

C716

0.022uF

+12V

+5V

+12V

4

+

C723
22uF/50V

1

32

Q705
NC

For LVDS PANEL

R712

4.7KΩ 1/10W

R710 NC

R706
NC

+

C719
NC

R722

NC

+5V3,4

R719
NC

Q703
PMBS3904

TO-263

R701
1KΩ 1/10W

+

C707
47uF/25V

R721
0Ω 1/10W

11223

3

4

4

5

5

66778

8

9

9

H1

TP

R716

NC

C706

0.1uF 50V

11223

3

4

4

5

5

66778

8

9

9

H2

TP

C708
1uF

R708
10KΩ 1/10W

R728
NC

on_BACKLIGHT 4

VLCD_12V 5

VLCD 5

1 2

L701

120Ω

+5V +12 V

+5V

+12V

+3V3

VLCD_12V

+5V

+5V

VLCD

+5V

+3V3

Title

Size Document Number Rev

Date: Sheet

of

A

Power

Custom

35Tuesday, D ecember 19, 2006

R731

NC

+5V

R729
NC

+5V

+

C712
100uF/25V

BL_ON

R720
NC

+12V

VCC3.3

+

C702
22uF/50V

R704
100Ω 1/10W

R730
NC

VCC1.8

R703
2KΩ 1/10W