AOC WA17W Schematic

17″LCD Color Monitor AOC WA17W

Service

Horizontal Frequency

55.5 kHz - 70.6 kHz

TABLE OF CONTENTS

Description Page Description Page

Table Of Contents.......……..............................…........1

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

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

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

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

3.Operation Instruction……..………...............……...........6

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

3.2.Control Button…………….…..............……...............6

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

4.Input/Output Specification............……………............10

4.1.Input Signal Connector............………….................10

4.2.Factory Preset Display Modes.........................11

N

4.3.Panel Specification.....……...……………..................12

5.Block Diagram………...................…………................14

5.1.Software Flow Chart……………………................14

5.2.Electrical Block Diagram………………..…............16

6.Schematic…………………...................................…18

6.1.Main Board........................................................18

6.2. Power Board....…..….….......................................23

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

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

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

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

8. Maintainability……………........................................31

8.1.Equipments and Tools Requirement......................31

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

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

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

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

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

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17″LCD Color Monitor AOC WA17W

Revision List

Revision Date Revision History TPV Model

A00 Mar.-14-2008 First Version Release T77HRTNCMWPUDN

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17″LCD Color Monitor AOC WA17W

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.)

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17″LCD Color Monitor AOC WA17W

1. Monitor Specifications

Items Descriptions

Driving system TFT Color LCD

Type HSD170MGW1-B00

Size 43.2cm (17")

LCD Panel

Pixel pitch 0.255mm( H )x 0.255mm( V )

Viewable angle 160˚ (H) 160˚ (V) (TYPE)

Response time (type) 5 ms

R,G,B Analog Interface

Video

Digital Interface

Connector

Input

Power Consumption

Contrast Ratio 600:1

Dot Clock 135 MHz

White Luminance 300cd/m2

Max. Resolution

Display Color 16.2M colors

Video Signal

Sync. Type H/V TTL

H-Frequency

V-Frequency

ON Mode ≤37W

OFF Mode ≤1W

1440 x 900 (60 Hz)

15-pin D-Sub, 24pin DVI

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

Digital signal

55.5 kHz - 70.6 kHz

55 Hz - 75 Hz

Plug & Play VESA DDC2BTM

Power Source 100~240VAC,47~63Hz

Weight (monitor only)

Environmental

Considerations

Regulations

3.1 kg

Operating Temp: 5°C to 35°C

Storage Temp: -20°C to 60°C

Operating Humidity: 10% to 85%

cULus/FCC/CE

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17″LCD Color Monitor AOC WA17W

(

)

2. LCD Monitor Description

The LCD MONITOR will contain a main board, a power board and a key 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.

Monitor Block Diagram

Power Board

Include: adapter, inverter

AC-IN

100V-240V

CCFL Drive.

Main Board

Key Board

Flat Panel and

CCFL backlight

RS232 Connector

For white balance

adjustment in factory

mode

Video signal, DDC

HOST Computer

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17″LCD Color Monitor AOC WA17W

3. Operating Instructions

3.1 General Instructions

Press the power button to turn the monitor on or off. The control buttons are located at 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, the power indicator will light up.

-

3.2 Control Buttons

1. Auto Adjust button / Exit

2. ECO mode/-

3. +/ Volume

4. MENU / ENTER

5. Power Button

6. LED

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17″LCD Color Monitor AOC WA17W

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.

OSD functions

Main Menu Item

Luminance

Main Menu

Icon

Sub Menu Item

Brightness Backlight Adjustment

Contrast Contrast from Digital-register.

Eco

Sub Menu

Standard Standard Mode

Text Text Mode

Internet Internet Mode

Game Game Mode

Movie Movie Mode

Sports Sports Mode

Gamma1 Adjust to Gamma1

Description

Gamma

DCR

Gamma2 Adjust to Gamma 2

Gamma3 Adjust to Gamma 3

Off Disable dynamic contrast ratio

On Enable dynamic contrast ratio

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17″LCD Color Monitor AOC WA17W

Clock

Adjust picture Clock to reduce Vertical-Line

noise.

Image Setup

Color Temp.

Focus

H.Position Adjust the horizontal position of the picture.

V.Position Adjust the vertical position of the picture.

Warm Recall Warm Color Temperature from EEPROM.

Normal

Cool Recall Cool Color Temperature from EEPROM.

sRGB Recall SRGB Color Temperature from EEPROM.

User-B Blue Gain from Digital-register

User

User-G Green Gain Digital-register.

User-R Red Gain from Digital-register

User-Y Yellow Gain from Digital-register

User-C Cyan Gain from Digital-register

User-M Magenta Gain from Digital-register

Adjust Picture Phase to reduce Horizontal-Line

noise

Recall Normal Color Temperature from

EEPROM.

Color Boost

Picture Boost

Full Enhance on or off Disable or Enable Full Enhance Mode

Nature Skin on or off Disable or Enable Nature Skin Mode

Green Field on or off Disable or Enable Green Field Mode

Sky-blue on or off Disable or Enable Sky-blue Mode

AutoDetect on or off Disable or Enable AutoDetect Mode

Demo on or off Disable or Enable Demo

Frame Size Adjust Frame Size

Brightness Adjust Frame Brightness

Contrast Adjust Frame Contrast

Hue Adjust Frame Hue

Saturation Adjust Frame Saturation

Position Adjust Frame Position

Bright Frame on or off Disable or Enable Bright Frame

OSD Setup

H.Position Adjust the horizontal position of OSD

V.Position Adjust the vertical position of OSD

Timeout Adjust the OSD Timeout

Language Select the OSD language

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17″LCD Color Monitor AOC WA17W

Input Select

Auto Config Auto adjust the picture to default

Digital Select Digital Signal Source as Input

Analog Select Analog Signal Source as Input

Extra

DDC/CI Turn ON/OFF DDC/CI Support

Reset yes or no Reset the menu to default

Show the information of the main image and

Information

sub-image source

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17″LCD Color Monitor AOC WA17W

4. Input/output Specification

4.1 Input Signal Connector

D-SUB connector

15

6

11 15

10

DVI connector

Pin No.

1. Red 9. +5V

2. Green 10. Detect Cable

3. Blue 11. RXD

4. TXD 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

Description

Pin No.

Description

Pin No.

1.

2.

3.

4.

5.

6.

7.

8.

Signal Name Pin No. Signal Name Pin No. Signal Name

TMDS Data 2-

TMDS Data 2+

TMDS Data 2/4 Shield

TMDS Data 4-

TMDS Data 4+

DDC Clock

DDC Data

N.C.

9.

10.

11.

12.

13.

14.

15.

16.

TMDS Data 1-

TMDS Data 1+

TMDS Data 1/3 Shield

TMDS Data 3-

TMDS Data 3+

+5V Power

Ground(for+5V)

Hot Plug Detect

17.

18.

19.

20.

21.

22.

23.

24.

TMDS Data 0-

TMDS Data 0+

TMDS Data 0/5 Shield

TMDS Data 5-

TMDS Data 5+

TMDS Clock Shield

TMDS Clock +

TMDS Clock -

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17″LCD Color Monitor AOC WA17W

4.2. Factory Preset Display Modes

Standard

Dos-mode

VGA

SVGA

XGA

WXGA

Resolution

Horizontal

Frequency

720 × 400 31.47kHz 70Hz

640x480 31.469kHz 59.94 Hz

640x480 37.861 kHz 72.809 Hz

640x480 37.5 kHz 75 Hz

800x600 35.156 kHz 56.25 Hz

800x600 37.879 kHz 60.317 Hz

800x600 48.077 kHz 72.188 Hz

800x600 46.875 kHz 75 Hz

1024x768 48.363 kHz 60.004 Hz

1024x768 56.476 kHz 70.069 Hz

1024x768 60.023 kHz 75.029 Hz

1152x864 67.5 kHz 75 Hz

1440x900 55.935 kHz 59.887 Hz

1440x900 70.635 kHz 75 Hz

Vertical

Frequency

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17″LCD Color Monitor AOC WA17W

4.3 Panel Specification

HannStar Display model HSD170MGW1-B00 is a color active matrix thin film transistor (TFT) liquid crystal

display (LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel,

a driving circuit and a back light system. This TFT LCD has a 17.0 inch diagonally measured active display area with

XGA resolution (900 vertical by 1440 horizontal pixel array) and can display up to 16.2M (6-bit+FRC) colors.

4.3.1 Features

_ 17.0 WXGA+ for Monitor application

_ High Resolution: 1440*900

_ 2-ch LVDS interface system

_ LCD Timing Controller

_ Wide Viewing Angle

_ RoHS compliance

4.3.2 Display Characteristics

4.3.3 Electrical Characteristics

TFT LCD Module

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17″LCD Color Monitor AOC WA17W

Backlight Unit

4.3.4 Optical Characteristics

Measuring Condition

_ Measuring surrounding: dark room

_ Lamp current IBL: 7.5±0.1mA, lamp freq. FL=50 KHz, Inverter: TDK TBD315NR-1

_ VDD=5.0V, fV=60Hz

_ Ambient temperature: 25±2oC

_ 30min. Warm-up time.

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17” LCD Color Monitor AOC WA17W

5. Block Diagram

5.1 Software Flow Chat

1

2

N

4

5

Y

6

7

Y

3

N

8

18

9

1

Y

N

12

Y

14

19

N

11

N

13

Y

N

15

Y

17

16

Y

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