Acer AT3720A Manuale utente

Acer AT3720A/3720B/3720 LCD TV

Service Guide

PRINTED IN TAIWAN

Service guide files and updates are available

on the ACER/CSD web; for more information,

please refer to http://csd.acer.com.tw

Revision History

Please refer to the table below for the updates made on Acer LCD TV AT3720A/3720B/3720 service guide.

Date Chapter Updates

III

transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in

any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without

the prior written permission of Acer Incorporated.

Disclaimer

The information in this guide is subject to change without notice.

Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the

contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular

purpose. Any Acer Incorporated software described in this manual is sold or licensed "as is". Should the

programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, or its

dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential

damages resulting from any defect in the software.

Acer is a registered trademark of Acer Corporation.

Other brand and product names are trademarks and/or registered trademarks of their respective holders.

Conventions

The following conventions are used in this manual:

SCREEN MESSAGES Denotes actual messages that appear

on screen.

NOTE Gives bits and pieces of additional

information related to the current

topic.

WARNING Alerts you to any damage that might

result from doing or not doing specific

actions.

CAUTION Gives precautionary measures to

avoid possible hardware or software

problems.

IMPORTANT Reminds you to do specific actions

relevant to the accomplishment of

procedures.

Preface

Before using this information and the product it supports, please read the following general information.

1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION

decided for Acer's "global" product offering. To better fit local market requirements and enhance product

competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g.

add-on card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered

in this generic service guide. In such cases, please contact your regional offices or the responsible

personnel/channel to provide you with further technical details.

2. Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information

available on your regional web or channel. If, for whatever reason, a part number change is made, it will

not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer

office may have a DIFFERENT part number code to those given in the FRU list of this printed Service

Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and

service of customer machines.

Chapter 1 1

Features

This LCD TV was designed with the user in mind. Here are just a few of its many features:

LCD Panel

TMax. resolution: 1366x768

TDisplay area: 37 inches diagonal

TDisplay color: 16.7 M colors (8 real bits per color)

TLife time: 60,000 hours

TInput Signal: 1-ch LVDS

TContrast ratio: 1200:1 ( Typ )

TBrightness: 500 cd/m2 ( Typ )

TResponse Time: AUO Typ. Gray to gray Tr=Tf=35ms

TViewing angle: 176 ( L ) / 176 ( R ), 176 ( U ) / 176 ( D)

I/O Functions

TRCA jack (YUV and CVBS) for YPbPr, YCbCr, video and audio

T15 pin D-Sub for VGA

T24 pin DVI / HDCP for DVI-D (optional)

T19 pin HDMI connector (optional)

TDIN45325 (IEC169-2) Terminal for TV / CATV input

T3.5 mm Earphone jack for audio line input

Video Functions

TSupport PAL/NTSC/SECAM video format (for AT3720A)

TSupport 480i/576i, 480p/576p, 1080i and 720p format

TBuild in Dynamic adaptive smoothing filter

TBuild in Dynamic temporal frame-filtering Noise Reduction

TBuild in Dynamic motion and edge adaptive De-interlacing

TFilm mode 3:2 and 2:2 pull down

TScreen display model 16:9 / 4:3 / panorama / zoon / PIP /POP

Mechanical

TDimensions (W x H x D mm): 944 x 692 x 261

TWeight (kg/lbs.): 23.9/53.1

TWall-mounting holes 400mm x 200mm

Power Source

TInput voltage: 100 ~ 240 V, 50 ~ 60 Hz

TMax. power consumption: 235W

°°°°

∮

System Specifications

Chapter 1

2Chapter 1

TInput current: 2.2A

TStandby consumption is under 5 Watts

Speaker

TInternal speaker: 10 W * 2 stereo, volume adjustable

TAmplimfier: 10W * 2 stereo, volume adjustable

Chapter 1 3

System Block Diagram

System Block and Wiring Diagram

LCD Main Board Block Diagram

AIN Board

SPEAKER IR Receiver Key Boar

Component2

Component1

V 2

V 1

I/O Board

A-Tuner

INVERTER

PANEL

odule

POWER

4Chapter 1

Board Layout

Cable Arrangement

No. Connector Cable Description

1 CN908 (Power Board) Inverter Cable

2 CN903 (Power Board) <-->CON15 (Main

Board)

Audio Cable-Main board (audio) to power

board

3 CN904<-->CON11 Power Cable

4 CON6 (Main Board) -CN1(Button Board)-CN1

(IR Board)

Button Board-IR Board (CN1)-Main Board

(CN1) Cable

5 CON17 (Main Board) LVDS Cable

6 CON13 (Main Board) Speaker Cable

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