AOC 1620Swa Schematic

15.6" LCD Monitor

AOC 1620Swa

Service

Service

Service

		Horizontal Frequency
		30-60 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 Instructions....................................…...........6
3.1.General Instructions...........................….....................6
3.2.Control Buttons and Connections…….…..................6
3.3 Adjusting the Picture..................................................	7
4.Input/Output Specification............……………............19
4.1.Input Signal Connector..............………….................19
4.2.Factory Preset Display Modes............…..................19
4.3.Panel Specification......……..……………..................20
5.Block Diagram….........................................................23
5.1 Main Board………….…………………………….…….23
5.2.Power Board……………………………………….......24

6.Schematic……………..............................................25 6.1.Main Board....……….............................................25 6.2.Power Board………………………………………....30 6.3.Key Board…………………...….……………………33 7.PCB Layout..………….............................................34 7.1.Main Board……….................................................34 7.2.Power Board.….....................................................36 7.3.Key Board…..........................................................37 8.Maintainability………...............................................38 8.1.Equipments and Tools Requirement......................38 8.2.Trouble Shooting……….......................................39 9.White-Balance,Luminance Adjustment….……..…...43 10.Monitor Exploded View…………….……….…........45 11.BOM List….............................................................47

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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Revision List

Version	Release Date	Revision History	TPV Model Name
A00	Jun. 02, 2010	Initial release	T69AM5NCYJRD9N

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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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1. Monitor Specification

		Model number	1620Swa
		Driving system	TFT Color LCD
		Viewable Image Size	39.6cm diagonal
	Panel	Pixel pitch	0.252mm(H) x 0.252mm(V)
		Video	R, G, B Analog lnterface
		Separate Sync.	H/V TTL
		Display Color	16.7M Colors
		Dot Clock	85.5 MHz
		Horizontal scan range	30 kHz - 60 kHz
		Horizontal scan Size(Maximum)	344.232mm
		Vertical scan range	55 Hz - 75 Hz
		Vertical scan Size(Maximum)	193.536mm
		Optimal preset resolution	1366 x 768 (60 Hz)
	Resolution	Highest preset resolution	1366 x 768 (60 Hz)
		Plug & Play	VESA DDC2B/CI
		Input Connector	D-Sub 15pin
		Input Video Signal	Analog: 0.7Vp-p(standard), 75 OHM, Positive
		Power Source	100~240VAC, 50/60Hz
		Power Consumption	Active < 20W
			Standby < 1 W
		Connector Type	15-pin Mini D-Sub
		Signal Cable Type	Detachable
		Dimensions & Weight:
	Physical Characteristics	Height (with base)	313.4 mm
		Width	373 mm
		Depth	190 mm
		Weight (monitor only)	2.7 kg
		Temperature:
		Operating	0° to 40°
		Non-Operating	-25° to 55°
		Humidity:
	Environmental
		Operating	10% to 85% (non-condensing)
		Non-Operating	5% to 93% (non-condensing)
		Altitude:
		Operating	0~ 3658m (0~ 12000 ft )
		Non-Operating	0~ 12192m (0~ 40000 ft )

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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				Flat Panel and
						CCFL backlight
											RS232 Connector
Power Board				Main Board							For white balance
											adjustment in factory
Include adapter, inverter and audio
											mode
				Key board			Video signal, DDC
							Host Computer
	AC-IN
	100V~240V

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3. Operation Instructions

3.1 General Instructions

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

3.2 Control Buttons and Connections

Power: Press the Power button continuously to turn off the monitor.

Eco Mode / <

Press the Eco key continuously to select the Eco mode of brightness when there is no OSD (Eco mode hot key may not be available in all models).

Volume/ >: When there is no OSD, press Volume (>) to active adjustment bar, press < or > to adjust volume.

Auto / Exit: When the OSD is closed, press Auto button will be auto configure hot key function.

1. Power

2. Analog (DB-15 VGA cable)

3. Audio

To protect equipment, always turn off the PC and LCD monitor before connecting. 1 Connect the power cable to the AC port on the back of the monitor.

2 Connect one end of the 15-pin D-Sub cable to the back of the monitor and connect the other end to the computer's D-Sub port.

3 Connect the audio cable to audio in port on the back of the monitor. 6

3.3 Adjusting the Picture

OSD Settings

Basic and simple instruction on the control keys.

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

3)Press < or > to change the settings of the selected function. Press < or > to select another function in sub-menu . Press AUTO to exit . If you want to adjust any other function, repeat steps 2-3.

4)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:

1)If the product has only one signal input, the item of "Input Select" is disable to adjust.

2)If the product screen size is 4:3 or input signal resolution is wide format, the item of "Image Ratio" is disable to adjust.

3)One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly.

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Exit

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i - Menu

Welcome to “i-Menu” software by AOC. i-Menu makes it easy to adjust your monitor display setting by using on screen menus instead of the OSD button on the monitor. To complete installation, please follow the installation guide.

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