Acer AT4230C User manual

Acer AT4230C
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

II
Revision History
Please refer to the table below for the updates of LCD TV AT4220A service guide.
Date Chapter Updates
January 15, 2007 initial release

III
Copyright
Copyright© 2007 by Acer Incorporated. All rights reserved. No part of this publication may be
reproduced, 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.

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

V
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.

VI
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, you should check the most up-to-date information
available on your regional web or channel. For whatever 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 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
Overview
LCD Panel
•Max. resolution: 1366 x 768
•20 CCFTs backlight system
•Display area: 42 inches
•Display color: 16.7 million colors
•Input signal: one-channel LVDS
•Contrast ratio: 1200/1 (typical)
•Brightness: 500 Cd/m2(typical)
•Response time (Tr + Tf): 8 ms
•Viewing angle: 89o(L)/ 89o(R), 89o(U)/ 89o(D)
I/O Functions
•RCA jack for YPbPr, YCbCr, video and audio input
•RCA jack for YPbPr, YCbCr, CVBS input
•4-pin S-Din for S-Video input
•15-pin D-sub for VGA
•19-pin HDMI connector
•RCA jack for HDMI analog audio input
•RCA jack for all source audio output
•F type terminal for DVB-T digital TV input
•F type terminal for analog TV/CATV input
•3.5mm jack for PC audio line input
Video Functions
•NTSC video format support
•480i, 480p/576p, 1080i and 720p format support
•Built-in motion adaptive 3D digital comb filter, high performance 5-line comb filter, Y/C separator
•Built-in dynamic adaptive smoothing filter
•Built-in dynamic temporal frame-filter noise reduction
•Built-in dynamic motion and edge adaptive de-interlacing
•Film mode 3/2 pull down
•Video enhancement feature including: DCTI/ DLTI/ H&V peaking
•Full 10-bit data path to ensure grater quality and minimalization of round-off errors
Mechanical
•VESA mounting holes
•Swivel: 0o
System Specification
Chapter 1

2Chapter 1
Compatibility
Multi-Sound System
•MTS (NTSC), (Stereo/ SAP/ Mono sound system)
Power Source
•Input voltage: 90 ~ 264V, 47 ~ 63Hz
•Input current: 3.47A (Max.)
•Power consumption: 347W (Max.)
•Stand-by: 3W (Max.)
Remote Control
•Multi-function remote control
Speaker
•Internal speaker: 10W x 2 stereo, adjustable volume
Others
•On-screen display adjustment function
•ISP (In System Programming) function available for revising driver easily

Chapter 1 3
System Block and Wiring Diagram
MAIN Board
SPEAKER IR Receiver Key Board
Comconner2
Comconnet1
AV 2
AV 1
I/O Board
D-TunerA-Tuner
HDMI MODULE
DVBT-BOARD
INVERTER
P
ANEL
Module
POWER

4Chapter 1
LCD Main Board Block Diagram