AOC e966Sn Schematic

19" LCD Color Monitor AOC e966Sn

Service

Horizontal Frequency

30-83 KHz

Table of Contents

Description Page Description Page

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.

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

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………...........................................25

7.2.Power Board…...............................................21

7.3.Key Board…………….....................................23

8.Maintainability………........................................24

8.1.Equipments and Tools Requirement...............24

8.2.Trouble Shooting…………..............................25

9.White-Balance, Luminance Adjustment.............29

10.Monitor Exploded View………..…….…............31

11.BOM List…………………………………............32

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

Aug.-31-2012

Initial release

T9C5R92DDBA3NNE

T9C5R92YDBA3NNE

T9C4R92DDBA3NNE

T9C4R92YDBA3NNE

T9C2R92YDBA1NNE

T9C2R92DDBA1NNE

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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 Specifications

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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.

AC-IN

100V-240V

Monitor Block Diagram

Flat Panel and backlight

Main Board

RS232 Connector

For white balance

adjustment in factory

mode

Video signal, DDC

Key Board

Host Computer

Power Board

LED Drive.

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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

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4.3 Panel Specification

4.3.1 General Features

This specification applies to the 18.95 inch Color a-Si TFT-LCD Module TPM190A1-MWW4. The display supports

the1440(H) x 900(V) screen format and 16.7M colors (RGB 6-bits + Hi-FRC data). The light source of this TFT-LCD

module is W-LED. All input signals are 2-channel LVDS interface and this module doesn’t contain a driver for

backlight.

4.3.2 Display Characteristics

4.3.3 Electrical Characteristics

TFT LCD MODULE

Vcc = 5.0 V, Ta = 25 ± 2 ºC, fv = 60 Hz

LED Characteristics

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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

04.Output

PPWR_ON#

L/T_SCL

L/T_SDA

CMVCC

PB[0..9]

CMVCC1

RTD2270CLW-CG SCHEMATIC

CMVCC1

LVDS OUTPUTXGA/SXGA

OEM MODEL Size

Rev

Date

Sheet of

TPV MODEL

PCB NAME

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Key Component

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01.Top

715G4488-M0A-001-0040_120106

02.Input

DSUB_R+

DSUB_G+

DSUB_B+

DSUB_V

DSUB_R-

DSUB_G-

DSUB_B-

DET_CABLE

DSUB_H

DSUB_SOG

DDC1_SDA

DDC1_SCL

CMVCC1

EDID_CTRL

05.Power

on_BACKLIGHT

Adj_BACKLIGHT

CMVCC

VCC3.3

Mute

Volume#

PANEL_ID#

CMVCC1

03.Scalar

DSUB_R+

DSUB_G+

DSUB_SOG

DSUB_B+

DSUB_R-

DSUB_G-

DSUB_B-

DSUB_H

DSUB_V

Adj_BACKLIGHT

VCC3.3

PB[0..9]

DDC1_SDA

DDC1_SCL

DET_CABLE

on_BACKLIGHT

PPWR_ON#

PANEL_ID#

Volume#

Mute

CMVCC1

EDID_CTRL

L/T_SCL

L/T_SDA

VCC3.3

CMVCC

VCC3.3

PB[0..9]

CMVCC1

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5.2 Power Board

5V

EMI filter

Start Resistor

(R919,R920,R921,R922)

PWM Control

(IC901)

Transformer

AC input

15V

Bridge

Rectifier

and Filter

Feedback

Circuit

Rectifier

diodes

Photo coupler

(IC902)

D801

15V

MOSFET

(Q801)

ON/OFF

DIM

L801

LED

(CN804)

PWM Control

OZ9998BGN

(U801)

Regulator

(IC903)

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