Acer at2621 schematic

Acer AT2621/22 LCD TV

Service Guide

Service guide files and updates are available on the ACER/CSD web. For more information, please refer to http://csd.acer.com.tw

PRINTED IN CHINA

Revision History

Please refer to the table below for the updates of LCD TV AT2621/22 service guide.

Date Chapter Updates

2007/10/10 Chapter 1 ~ 3 1st edition

Copyright®2006 by Acer Incorporated. All rights reserv ed. No par t of this publication may be reproduced, transmitted, transc ribed, stored in a retrieval system, or tr anslated into any language or computer langua ge, in any form or by any means, electronic, mechanical, mag netic, optical, chemical, manual or otherwise, without the prior written permission of Acer I ncorporated.

III

Disclaimer

The information in this guide is subject to change without notice. Acer Incorporated makes no re presentations or warranties , either expressed or implied, with respect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular purpo se. Any Acer Incorporat ed software described in this manual is sold or licensed “as is ”. Should the programs prove defec tive following their purchase, the buyer (and not Acer Incorporate d, its distributor, or its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or cons equential damages resulting from any defect in the software.

Acer is a registered trademark of Acer Incorporated. Other brand and product names are tr adem arks and/or register ed trademarks of their respective holders.

Conventions

The following convent ions are u sed in this manual.

SCREEN MESSAGES Denotes actual messages that appear on screen.

NOTE

WARNING

CAUTION

IMPORTANT

Gives bits and pieces of additional information related to the current topic. Alerts you to any damage that might result from doing or not doing specific actions. Gives precautionary measures to avoid possible hardware or software problems. Reminds you to do specific actions relevant to the accomplishment of procedures.

Preface

Before using this information and the pro d uct it supports, please read the following general information.

1. This Service Gu ide provides you with all technical information relating to the BASIC CONFIGURATION decided for Acer's “global” product offering. To better fit local market requireme nts and enhance product competitiveness, your regional office MA Y 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 pr ovide you with further technical details.

2. Please note WHEN ORDERING FRU PARTS, you should check the most up-to-date information available on your regional web or channel. For whatev er reason, if a part number change is made, it will not be noted in the printed Service Guide. For ACER -AUTHORIZED SERVICE PROVIDERS, your Acer off ice may have a DIFFERENT part number code to those given in the FRU list o f this printed Service Guide. You MUST use the list provided by your regional Acer off ice to order FRU parts for repair and service of customer machines.

Chapter 1

System Specification

Specification

LCD Panel

Max. resolution: 1366 x 768 6 CCFTs Backlight system Display area: 575.769 (H) x 323.712 (V) Display color: 16.7 M colors Input Signal: 1-ch LVDS Contrast ratio: 800:1 ( Typical ) Brightness: 500 Cd/m² ( Typical ) Response Time: 8 ms ( Gray to Gray ) Viewing angle: 80° ( L ) / 80° ( R ), 80° ( U ) / 80° ( D )

I/O functions

21 pin Euro-SCART ( RGB ) for Video, S-Video, R.G.B. and Audio 21 pin Euro-SCART ( RGB ) for Video, S-Video, R G B and Audio RCA jack ( YUV and CVBS ) for YPbPr, YCbCr, Video and Audio RCA jack ( R and L) for Audio Line Out (the output will change according to user’s selec tion) 15 pin D-Sub for VGA 19 pin HDMI connector * 2 DIN45325 ( IEC169-2 ) Terminal for TV / CATV input

3.5 mm∮Earphone jack for PC Audio Line input

Video Functions

Support PAL / NTSC / SECAM video format Support 480i/576i, 480p/576p, 1080i and 720p format Build in Teletext functions Build in Dynamic adaptive smoothing filter Build in Dynamic temporal frame-filtering Noise Reduction Build in Dynamic motion and edge adaptive De-interlacing

1 Chapter1

Film mode 3:2 & 2:2 pull down Screen display model: Auto / 4:3 / 16:9 / panorama / Letterbox 1,2,3

Mechanical

VESA mounting holes

Compatibility

Multi-Sound system

NICAM FM Stereo ( A2 )

Power Source

Input voltage: AC: 90 ~ 264 V, 47 ~ 63 Hz Input current: 1A (AC 220V) Power consumption: 161 Watts Stand-by: 2 Watts Max.

Remote controllers

Multi-function remote controller

Speaker

Internal speaker: 5 W x 2 stereo

Others

On screen display adjustment function

ISP ( In System Programming ) function available fo r revising driver easily

Chapter1 2

System Block & Wiring Diagram

INVERTE

POWER Board

PANEL

AIN Board

I/O Board

Tuner Scart RGB Scart RGB

Line Out

IR & power button B

SPEAKER-L

SPEAKER-R

Key Board

3 Chapter1

LCD Main Board Block Diagram

Chapter1 4

Remote Control

Key Functions

Remote Function des cription

R/C for Europe Key Functions Remark (for cardreader) Power Power On/Off Display Display Channel and Input Source

5 Chapter1

+ 23 hidden pages