AOC e2066Sn Schematic

20" LCD Color Monitor

AOC e2066Sn

Service

Service

Service

Horizontal Frequency

30-83 KHz

Table of Contents

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
4.Input/Output Specification............……………............			8
4.1.Input Signal Connector............………….................8
4.2.Factory Preset Display Modes…….........................			9
4.3.Panel Specification.....………...…………................			9
5.Block Diagram……..........	...........………….................11
5.1.Main Board…….…………...		………………....….......11

Description	Page
5.2.Power Board……………..……………...….......12
6.Schematic……………........................................	13
6.1.Main Board………...........................................	13
6.2.Power Board...…….........................................17
6.3.Key Board...……............................................19
7.PCB Layout..………….......................................	20
7.1.Main Board………...........................................	20
7.2.Power Board…...............................................22
7.3.Key Board…………….....................................	25
8.Maintainability………........................................26
8.1.Equipments and Tools Requirement...............	26
8.2.Trouble Shooting…………..............................	27
9.White-Balance, Luminance Adjustment.............	31
10.Monitor Exploded View………..…….…............33
11.BOM List…………………………………............34

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

Revision List

Version

Release Date

Revision History

TPV Model Name

TAC2R93BDBA1NNE

TAC2R93BDBA3NNE

TACAR93BDBA1NNE

TACAR93BDBA3NNE

A00

Aug.-10-2012

Initial release

TACMR93BDBA1NNE

TACMR93BDBA3NNE

TACAR93BDBA7NNE

TACMR93BDBA7NNE

TAC2R93BDBA7NNE

2

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 Specifications

4

2. LCD Monitor Description

The LCD monitor will contain a main board, a power board, a key board which house the flat panel control logic, brightness control logic and DDC.

The power part will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.

Monitor Block Diagram

LED Drive.	Flat Panel and backlight
Power Board		RS232 Connector
		For white balance
	Main Board	adjustment in factory
		mode
Key Board		Video signal, DDC

AC-IN

100V-240V

Host Computer

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3. Operating Instructions

3.1 General Instructions

This monitor only has one external control function button; press the Power/Auto Configuration button to turn the monitor on or off.

If you need to adjust other functions, please visit the official AOC website (www.aoc.com)to download and install

AOC’s exclusive i-Menu application software, and then perform related function adjustments to get the screen you require.

•Connect the power cord properly.

•Connect the signal cable onto the PC’s graphics card.

•Push the button to start the monitor, and the power indicator will light up..

3.2 Control Buttons

1.Power/ Auto Configuration

•Power/ Auto Configuration:

•When Power on, press Power/ Auto Configuration button to do auto configure .

•When Power off, press Power/ Auto Configuration button to turn on the monitor .

•When Power on, press Power/ Auto Configuration button continuously about 2 seconds to turn off the monitor .

•LED Indicator: Green—Full Power Mode. Flickering Green—Active-off Mode.

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NOTE

Power/ Auto Configuration

• Do not place the monitor close to heat sources such as heaters, ventilation ducts or places exposed to direct sunlight.Do not place it at dusty places or places that make the machine shake or impact either.

•Keep the original package box and packing materials; if you need to transport your monitor again, they will come in handy.

•For maximum protection, please pack the monitor the way it was packed when shipped out of the factory.

1.Power

2.Analog (DB-15 VGA cable)

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 Turn on your monitor and computer

.

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4. Input/Output Specification

4.1 Input Signal Connector

Pin Assignments

15-Pin Side of the Signal Cable

4.2 Factory Preset Display Modes

8

4.3 Panel Specification

4.3.1 General Features

TPM200O1-FGEL02 C1A is a 20” wide TFT Liquid Crystal Display module with LED Backlight Unit and 30 pins

2ch-LVDS interface. This module supports 1600(H) x 900(V) HD+ Resolution and can display 16.7M colors. The converter module for Backlight is not built in.

4.3.2 Display Characteristics

4.3.3 Electrical Characteristics

Vcc = 5.0 V, Ta = 25 ± 2.ºC, Frame rate=75Hz.Clock frequency = 95MHz

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4.3.4 Optical Characteristics

VDD = 5.0V, Frame rate = 60Hz, Clock = 78MHz, IBL = 7.5mA, Ta =25±2

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5. Block Diagram

5.1 Main Board

715G4488M02000004C

RTD2270CLW-CG SCHEMATIC

XGA/SXGA

LVDS OUTPUT

DSUB_R+

DSUB_R+

DSUB_R-

DSUB_R-

DSUB_G+

DSUB_G+

DSUB_G-

DSUB_G-

DSUB_SOG

DSUB_SOG

DSUB_B+

DSUB_B+

DSUB_B-

DSUB_B-

VCC3.3

DSUB_H

DSUB_H

DSUB_V

DSUB_V

DDC1_SDA

DDC1_SDA

DDC1_SCL

DDC1_SCL

CMVCC1

DET_CABLE

DET_CABLE

CMVCC1

EDID_CTRL

EDID_CTRL

CMVCC1

02.Input

VCC3.3

on_BACKLIGHT

on_BACKLIGHT

CMVCC

VCC3.3

PB[0..9]

Mute

Mute

Volume#

Volume#

PPWR_ON#

CMVCC1

PANEL_ID#

PANEL_ID#

L/T_SCL

Adj_BACKLIGHT

Adj_BACKLIGHT

CMVCC

L/T_SDA

CMVCC1

VCC3.3

CMVCC1

04.Output

CMVCC

CMVCC

PB[0..9]

PB[0..9]

PPWR_ON#

L/T_SCL

L/T_SDA

04.Output

05.Power			03.Scalar
	T P V	( Top Victory Electronics Co . , Ltd. )		OEM MODEL	AOC 66S ID(1A) - 18.5" only	Size	A
			715G4488-M0A-001-0040_120106	TPV MODEL	AOC 66S ID(1A) - 18.5" only	Rev	A
	Key Component		01.Top	PCB NAME	715G4488-M0A-001-0040		< >
	Date		Wednesday , January 11, 2012	Sheet	3 of 7

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5.2 Power Board

AC input
			Bridge						15V
					Transformer		Rectifier
	EMI filter		Rectifier
							diodes
			and Filter						5V

Start Resistor (R919,R920,R921,R922)

Feedback

PWM Control Circuit

(IC901)

Photo coupler		Regulator
(IC902)		(IC903)

15V	L801		D801

MOSFET
(Q801)	LED
	(CN804)

ON/OFF	PWM Control
	OZ9998BGN
DIM	(U801)

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6. Schematic
6.1 Main Board
715G4488M02000004C
	H_Sy nc	R101	0R05 1/10W			R102	100R 1/16W 5%
	V_Sy nc					R103	100R 1/16W 5%
			R105	R106	C102	C103
		2K2 1/16W 5%		2K2 1/16W 5%
					22PF 50V22PF 50V
	CN101
		16
DSUB_SCL	15		5	VGA_PLUG		DSUB_5V
			10
	14		4
ΑCONN	13		9	DSUB_5V	ZD103
			3	VGA_B+	2
			8	VGA_B-
DSUB_SDA	12		2	VGA_G+
			7	VGA_G-
	11		1	VGA_R+	RLZ5.6B
					1
			6	VGA_R-

	17				DB15

VGA_B+

DSUB_H 5 DSUB_V 5

VGA_B-

VGA_G+

VGA_G-

U103

DSUB_SDA

1

6

H_Sy nc

VGA_R+

I/O1 I/O4

DSUB_SCL

2

GND NC

5

V_Sy nc

GND POWER

DGND

3

I/O2 I/O3

4

AZC398-04S

VGA_R-

U102

VGA_G+

1

VGA_PLUG

I/O1 I/O4

6

2

GND NC

5

VGA_R+

VGA_B+

3

I/O2 I/O3

4

AZC398-04S

C435

1N50V

056G 662504 эΘ2nd source

1/16W5%

R472

4K7

DSUB_SCL R475

47R 1/16W 5%

DSUB_SDA R476

47R 1/16W 5%

5

DDC1_SDA

DDC1_SDA

5

DDC1_SCL

DDC1_SCL

CMVCC1

CMVCC1 5

R118

100K 1/16W 5%

VGA_PLUG

DET_CABLE 5

	FB102
		R104	C101
1	2		DSUB_B+	5
	19R 0.5A
		100R 1/16W 5%	47nF 16V
	R107	C104
	75 OHM +-5% 1/16W	5PF 50V
		R108	C105
			DSUB_B-	5
		100R 1/16W 5%	47nF 16V
		R109

							C106
							22NF25V
						1K 1/16W 5%
	FB103
						R111	C107
1		2
	19R 0.5A
						100R 1/16W 5%	47nF 16V
			R112			C108
			75 OHM +-5% 1/16W			5PF 50V
						R114	C109
						100R 1/16W 5%	47nF 16V
	FB101
						R115	C110
1		2
	19R 0.5A
						100R 1/16W 5%	47nF 16V
			R116			C111
			75 OHM +-5% 1/16W			5PF 50V
						R117	C113
						100R 1/16W 5%	47nF 16V
CMVCC1		DSUB_5V
			D403
			LBAV70LT1G
R473 1/16W4K75%	R474 1/16W22K 5%	8			1	C434
		U405				220N16V
		7	VCC	A0	2
			WP	A1
		6			3
			SCL	A2
		5			4
			SDAGND
		AT24C02C-SSHM-T
				EDID_CTRL

DSUB_SOG 5

DSUB_G+ 5

DSUB_G- 5

DSUB_R+ 5

DSUB_R- 5

T P V	( Top Victory Electronics Co . , Ltd. )		OEM MODEL	AOC 66S ID(1A) - 18.5" only	Size	B
715G4488-M0A-001-0040_120106			TPV MODEL	AOC 66S ID(1A) - 18.5" only	Rev	A
Key Component		02.Input	PCB NAME	715G4488-M0A-001-0040
						< >
Date		Wednesday , January 11, 2012	Sheet	4 of 7

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