AOC WA17W Schematic

17″LCD Color Monitor

AOC WA17W

Service

Service

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
	LCD Panel	Size	43.2cm (17")
		Pixel pitch	0.255mm( H )x 0.255mm( V )
		Viewable angle	160˚ (H) 160˚ (V) (TYPE)
		Response time (type)	5 ms
		Video	R,G,B Analog Interface
			Digital Interface
		Connector	15-pin D-Sub, 24pin DVI
	Input		Analog:0.7Vp-p(standard),75 OHM, Positive
		Video Signal
			Digital signal
		Sync. Type	H/V TTL
		H-Frequency	55.5 kHz - 70.6 kHz
		V-Frequency	55 Hz - 75 Hz
	Power Consumption	ON Mode	≤37W
		OFF Mode	≤1W
	Contrast Ratio	600:1
	Dot Clock	135 MHz
	White Luminance	300cd/m2
	Max. Resolution	1440 x 900 (60 Hz)
	Display Color	16.2M colors
	Plug & Play	VESA DDC2BTM
	Power Source	100~240VAC,47~63Hz
	Weight (monitor only)	3.1 kg
	Environmental	Operating Temp: 5°C to 35°C
		Storage Temp: -20°C to 60°C
	Considerations
		Operating Humidity: 10% to 85%
	Regulations	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

		CCFL Drive.				Flat Panel and
						CCFL backlight
									RS232 Connector
Power Board
				Main Board
									For white balance
(Include: adapter, inverter)
									adjustment in factory
									mode
				Key Board
AC-IN								Video signal, DDC
100V-240V
						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.

3.2Control 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
	Main Menu Item		Sub Menu Item	Sub Menu	Description
		Icon
			Brightness		Backlight Adjustment
			Contrast		Contrast from Digital-register.
				Standard	Standard Mode
				Text	Text Mode
			Eco	Internet	Internet Mode
				Game	Game Mode
	Luminance
				Movie	Movie Mode
				Sports	Sports Mode
				Gamma1	Adjust to Gamma1
			Gamma
				Gamma2	Adjust to Gamma 2
				Gamma3	Adjust to Gamma 3
			DCR	Off	Disable dynamic contrast ratio
				On	Enable dynamic contrast ratio

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17″LCD Color Monitor					AOC WA17W
					Adjust picture Clock to reduce Vertical-Line
			Clock
					noise.
					Adjust Picture Phase to reduce Horizontal-Line
			Focus
	Image Setup				noise
			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.
					Recall Normal Color Temperature from
			Normal
					EEPROM.
			Cool		Recall Cool Color Temperature from EEPROM.
			sRGB		Recall SRGB Color Temperature from EEPROM.
	Color Temp.			User-B	Blue Gain from Digital-register
				User-G	Green Gain Digital-register.
			User	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
			Full Enhance	on or off	Disable or Enable Full Enhance Mode
			Nature Skin	on or off	Disable or Enable Nature Skin Mode
	Color Boost		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
	Picture Boost		Hue		Adjust Frame Hue
			Saturation		Adjust Frame Saturation
			Position		Adjust Frame Position
			Bright Frame	on or off	Disable or Enable Bright Frame
			H.Position		Adjust the horizontal position of OSD
			V.Position		Adjust the vertical position of OSD
	OSD Setup
			Timeout		Adjust the OSD Timeout
			Language		Select the OSD language

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17″LCD Color Monitor					AOC WA17W
			Input Select	Digital	Select Digital Signal Source as Input
				Analog	Select Analog Signal Source as Input
			Auto Config		Auto adjust the picture to default
	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

	1	5
	6	10
	11	15
Pin No.	Description	Pin No.	Description
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

DVI connector

Pin No.	Signal Name		Pin No.	Signal Name	Pin No.		Signal Name
1.	TMDS Data 2-		9.	TMDS Data 1-	17.		TMDS Data 0-
2.	TMDS Data 2+		10.	TMDS Data 1+	18.		TMDS Data 0+
3.	TMDS Data 2/4 Shield		11.	TMDS Data 1/3 Shield	19.		TMDS Data 0/5 Shield
4.	TMDS Data 4-		12.	TMDS Data 3-	20.		TMDS Data 5-
5.	TMDS Data 4+		13.	TMDS Data 3+	21.		TMDS Data 5+
6.	DDC Clock		14.	+5V Power	22.		TMDS Clock Shield
7.	DDC Data		15.	Ground(for+5V)	23.		TMDS Clock +
8.	N.C.		16.	Hot Plug Detect	24.		TMDS Clock -

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17″LCD Color Monitor					AOC WA17W
4.2. Factory Preset Display Modes
	Standard		Resolution	Horizontal	Vertical
				Frequency	Frequency
	Dos-mode		720 × 400	31.47kHz	70Hz
			640x480	31.469kHz	59.94 Hz
	VGA		640x480	37.861 kHz	72.809 Hz
			640x480	37.5 kHz	75 Hz
			800x600	35.156 kHz	56.25 Hz
	SVGA		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
	XGA		1024x768	56.476 kHz	70.069 Hz
			1024x768	60.023 kHz	75.029 Hz
			1152x864	67.5 kHz	75 Hz
	WXGA		1440x900	55.935 kHz	59.887 Hz
			1440x900	70.635 kHz	75 Hz

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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	Y
	3
	N
4

5	N
	Y

6
7	N
	8
	Y
9
1	N
	11
Y
N	13	N
12
Y	Y
14	15	N
		16
	Y
	17

	N
18	19

Y

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