AOC 193P Schematic

19” LCD Color Monitor

AOC 193P

Service

Service

Service

		Horizontal Frequency
	TABLE OF CONTENTS	30kHz – 83kHz
Description	Page Description	Page

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

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

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

6.Schematic……………....................................…19

6.1Main Board.………..……..........................................19

6.2Inverter Board..………..……..................................25

1.Monitor Specification..............................………........4 6.3 Adapter Board..………..…….................................27

2.LCD Monitor Description…………………………….......5 7.PCB Layout..……………….......................................28

3.Operation Instruction…………...............……...........6 7.1 Main Board…………….........................................28

3.1 General Instructions...........................…...........6 7.2 Inverter Board…..………...................................31

3.2 Control Button…………….…..............……...............6 7.3 Adapter Board………….....................................33

3.3 Adjusting the Picture...........................…............8			7.4 Key Board………………….......................................33
4. Input/Output Specification............……………............10			8. Maintainability……….......................................34
4.1 Input Signal Connector............……….…….................10			8.1 Equipments and Tools Requirement……..............34
4.2 Factory Preset Display Modes	.....................................11		8.2 Trouble Shooting…….………..............................34
4.3NPanel Specification.....………….…..…..…..................12			9. White-Balance, Luminance adjustment.............	40
5. Block Diagram……...................…………................15			10. Monitor Exploded View……….…...…………............41
5.1 Software Flow Chart……………….…………....….......15			11. BOM List……….....................................................42
5.2 Electrical Block Diagram….………………….....…...17

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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19” LCD Color Monitor				AOC 193P
			Revision List
	Revision	Date	Revision History	TPV Model
	A00	Aug-29-06	Initial Release	T94AM2HCBMPUNP
				T980KA2HCSION

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19” LCD Color Monitor

AOC 193P

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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19” LCD Color Monitor			AOC 193P
1. Monitor Specifications
		Driving system	TFT Color LCD
	LCD Panel
		Size	48cm(19")
		Pixel pitch	0.294mm( H ) × 0.294mm( V )
		Video	R,G,B Analog Interface
			Digital Interface
	Input
		Separate Sync.	H/V TTL
		H-Frequency	30kHz – 83kHz
		V-Frequency	55-75Hz
	Display Colors		16.2M Colors
	Dot Clock		135MHz
	Max. Resolution		1280 × 1024 @75Hz
	Plug & Play		VESA DDC 2BTM
	EPA ENERGY STAR®	ON Mode	≤37W
		OFF Mode	≤1W
	Input Connector		15-pin D-Sub
			DVI 24pin
	Input Video Signal		Analog:0.7Vp-p(standard),75 OHM, Positive
			Digital signal
	Maximum Screen Size		Horizontal : 376.32mm
			Vertical : 301.056mm
	Power Source		100~240VAC,50~60Hz
			Operating Temp: 5° to 50°C
	Environmental		Storage Temp.: -20° to 60°C
	Considerations		Operating Humidity :
			10% to 85%
	Dimension		406×407×214 (W ×H×D)mm
	Weight (N. W.)		4.6kg Unit (net)
	Power Consumption ( Maximum )		37 Watts
	Regulatory Compliance		CE, MPRII, FCC, cULus, TCO’99

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19” LCD Color Monitor

AOC 193P

2. LCD Monitor Description

The LCD monitor will contain a main board, a power board and 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
Power board		Main Board	RS232 Connector
(Include: adapter, inverter)
			For white balance
			adjustment in factory
		Key board	mode
AC-IN			Video signal, DDC
100V-240V

HOST Computer

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19” LCD Color Monitor

AOC 193P

3. Operating Instructions

3.1 General Instructions

Press the power button to turn the monitor on or off. The other 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 position. The power indicator will light up.

3.2 Control Buttons

External Controls

1.	Power Key	2.	LED
3.	MENU/ENTER	4.	Contrast
5.	Brightness	6.	Auto Adjust Key/Exit

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19” LCD Color Monitor

AOC 193P

FRONT PANEL CONTROL

•Power Button:

Press this button to switch ON/OFF of monitor’s power.

•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 Brightness/ Contrast Adjust OSD status.

•Contrast:

Adjust contrast or function adjust.

•Brightness:

Adjust brightness or function adjust.

•Auto Adjust button / Exit:

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

2.When OSD menu is in off status, press this button over 2 seconds to activate the Auto Adjustment function. The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.

•Power Indicator:

Green —Power On mode. Orange —Off mode.

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.

NOTES

•Do not install the monitor in a location near heat sources such as radiators or air ducts, or in a place subject to direct sunlight, or excessive dust or mechanical vibration or shock.

•Save the original shipping carton and packing materials, as they will come in handy if you ever have to ship your monitor.

•For maximum protection, repackage your monitor as it was originally packed at the factory.

•To keep the monitor looking new, periodically clean it with a soft cloth. Stubborn stains may be removed with a cloth lightly dampened with a mild detergent solution. Never use strong solvents such as thinner, benzene, or abrasive cleaners, since these will damage the cabinet. As a safety precaution, always unplug the monitor before cleaning it.

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19” LCD Color Monitor

AOC 193P

3.3 Adjusting The Picture

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.

Adjusting the Picture

The descriptions for function control LEDS

Main Menu	Main	Sub Menu
	Menu		Sub Menu Icon	Description
Item	Icon	Item
		Contrast		Contrast from Digital-register.
Luminance
		Brightness		Backlight Adjustment
Image		Focus		Adjust Picture Phase to reduce Horizontal-Line noise
Setup		Clock		Adjust picture Clock to reduce Vertical-Line noise.
Image		H. Position		Adjust the horizontal position of the picture.
Position		V. Position		Adjust the vertical position of the picture.
		Warm	N/A	Recall Warm Color Temperature from EEPROM.
		Cool	N/A	Recall Cool Color Temperature from EEPROM.
Color		sRGB	N/A	Recall sRGB Temperature from EEPROM.
Temp.		User / Red		Red Gain from Digital-register.
		User / Green		Green Gain Digital-register.
		User / Blue		Blue Gain from Digital-register.
Input		Analog	N/A	Select input signal from analog source (D-Sub)
Select
		Digital	N/A	Select input signal from digital source (DVI)
		H. Position		Adjust the horizontal position of the OSD.
OSD Setup
		V. Position		Adjust the vertical position of the OSD.
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19” LCD Color Monitor					AOC 193P
			OSD Timeout		Adjust the OSD timeout.
	Language		Language	N/A	Select the language you like.
	Information		Information	N/A	Show the resolution, H/V frequency and input port of
					current input timing.
	Reset		Yes	N/A	Clear each old status of Auto-configuration.
			No	N/A	Do not execute reset, return to main menu.
	Exit		N/A	N/A	Exit OSD

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19” LCD Color Monitor			AOC 193P
4. Input/Output Specification
4.1 Input Signal 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

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

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19” LCD Color Monitor						AOC 193P
4.2 Factory Preset Display Modes
	Standard		Resolution		Horizontal	Vertical
					Frequency	Frequency
	Dos-mode		720 × 400		31.47kHz	70.0Hz
	VGA		640	× 480	31.47kHz	60.0Hz
			640	× 480	37.50kHz	75.0Hz
	SVGA		800	× 600	37.879kHz	60.0Hz
			800	× 600	46.875kHz	75.0Hz
			1024 × 768		48.363kHz	60.0Hz
	XGA		1024 × 768		56.476kHz	70.0Hz
			1024 × 768		60.021kHz	75.0Hz
	SXGA		1280	× 1024	64.000kHz	60.0Hz
			1280	× 1024	80.000kHz	75.0Hz

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19” LCD Color Monitor

AOC 193P

4.3 Panel Specification

4.3.1Features

4.3.2Display Characteristics

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19” LCD Color Monitor

AOC 193P

4.3.3 Optical Characteristics

Electrical characteristics

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19” LCD Color Monitor

AOC 193P

Backlight unit

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19” LCD Color Monitor		AOC 193P
5. Block Diagram
5.1 Software Flow Chart
1
2	Y	3
N
4
5	N
Y
6
7	N	8
Y
9

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

18	N	19

Y

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19” LCD Color Monitor

AOC 193P

1)MCU initializes.

2)Is the EPROM blank?

3)Program the EPROM by default values.

4)Get the PWM value of brightness from EPROM.

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 EPROM.

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 there 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?

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19” LCD Color Monitor

AOC 193P

5.2 Electrical Block Diagram

5.2.1 Main Board

Crystal 24MHz (X601)

					MCU
					MTV512GMV
					(U601)
	EPR_SDA
	EPR_SCL
EEPROM					Key Board Control
M24C16					(CN602)
(U602)

LCD Interface

(CN503)

	Scalar IC TSU56AK
						Crystal
	(Include ADC, OSD)
						14.318MHz
	(U401)
						(X401)
	Digital Video	H sync
		V sync
	Signal
		RGB

	DVI					D-Sub
	Connector					Connector
	(CN302)					(CN301)
		DVI_SDA,					DB15_SDA,
		DVI_SCL					DB15_SCL
	EEPROM					EEPROM
	M24C02					M24C02
	(U302)					(U301)

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19” LCD Color Monitor

AOC 193P

5.2.2 Inverter/Power Board

12V

Bridge

Rectifier

AC input

Transformer

EMI filter

Rectifier

diodes

and Filter

U101

Start Circuit: R903 R904

CN102

				5V
PWM		Over	Feedback
			Circuit	12V
Control IC		Voltage
		Protect
				ON/OFF
Output	Transformer	MOSFET
Circuit
		Q203 Q204
Lamp
		PWM
Feedback		PWM		ON/OFF Control
Circuit		Control IC
				DIM

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19” LCD Color Monitor

AOC 193P

6. Schematic

6.1Main Board

TSU16/56AK SCHEMATIC

B2

B1

RI N

RI N

GN DR

GN DR

TXD

GI N

GI N

RXD

GN DG

GN DG

DD C_CLK

SOG

SOG

DD C_DAT

BI N

BI N

GN DB

GN DB

ST_DET1

HSYN C

HSYN C

DVI_D ET

VSYN C

VSYN C

DD CC I_SEL

R+

R+

R-

R-

G+

G+

G-

G-

B+

B+

B-

B-

CLK+

CLK+

CLK-

CLK-

DD C_WP

3.INPUT

B3

DD CC I_SEL

DVI_D ET

DD C_WP

ST_DET1

CSZ

CSZ

DD C_CLK

DD C_DAT

SC L

SC L

VC PU VC C12V VC C5V

RXD

SD A

SD A

TXD

HW RESET

HW RESET

IN T

IN T

AD 0

AD 0

VC C5V

AD 1

AD 1

AD 2

AD 2

VC C12V

AD 3

AD 3

	VC PU	Volum e
	Volum e
	onPAN EL_5V/3.3V
VC PU	onBAC KLI TE
VC C12V
VC C3. 3	6.MCU
VC C1. 8
VAA1
VAA2
VAA3
VAA4	B4
VC C5V
	onBAC KLI TE
	onPanel_5V/3. 3V
	VC PU
	VC C12V
	VC C3. 3	AdjBAC KLITE
	VC C1. 8 AdjBAC KLITE
	VAA1	VLCD
	VAA2
	VAA3
	VAA4
	VC C5V	4.SCALER
	VLCD
	2.POWER

VC C1. 8 VC C3. 3 VAA1 VAA2 VAA3 VAA4

VC C1. 8

VC C3. 3

VAA1

VAA2

VAA3

VAA4

			B5
PA[0.. 9]	PA[0.. 9]		PA[0.. 9]
	PB[0.. 9]				VL			CD
PB[0.. 9]			PB[0.. 9]
			VLCD

5.PANEL INTERFACE

Tit le TSU16/56AK FOR MYSON512 SWITCH

Size	Docum ent Num ber			Rev
B	TOP			B
Date:	W ednesday , October 06, 2004 Sheet	1	of	6

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