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Acer AT2703 Service Manual

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AT2703
Service Guide
Service guide files and updates are available
on the AIPG/CSD web; for more information,
please refer to
http://csd.acer.com.tw
PRINTED IN TAIWAN

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  Summary of Contents for Acer AT2703

  • Page 1 AT2703 Service Guide Service guide files and updates are available on the AIPG/CSD web; for more information, please refer to http://csd.acer.com.tw PRINTED IN TAIWAN...
  • Page 2: Revision History

    Revision History Please refer to the table below for the updates made on AT2703 service guide. Date Chapter Updates...
  • Page 3 Copyright Copyright © 2006 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.
  • Page 4 Conventions The following conventions are used in this manual: Screen messages NOTE WARNING CAUTION IMPORTANT Denotes actual messages that appear on screen. 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.
  • Page 5 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.
  • Page 6: Table Of Contents

    Chapter1 System Specifications ...1 Features ......... 1 Product Specification .
  • Page 7: Chapter1 System Specifications

    System Specifications Features LCD Panel • Max. resolution: 1366 x 768 • 16 CCFTs backlight system • Display area: 27 inches diagonal • Display color: 16.7 M colors • Input signal: 1-ch LVDS • Contrast ratio: 1000:1 (typical) • Brightness: 500 Cd/m •...
  • Page 8: Remote Controller

    Remote Controller • Multi-function remote controller Speaker • Internal speaker: 10W x 2 stereo, adjustable volume Environmental Requirement • Operating temperature: 0 • Operating humidity: 10% to 90% (non-condensing) • Storage temperature: -20 • Shipping temperature: -20 • Storage humidity: 10% to 90% (non-condensing) •...
  • Page 9: Product Specification

    854 x 527 x 207 15.5/34.2 16.5/36.4 200 x 100 PAL, SECAM B/G/D/K/I/L (multi-European) NICAM/A2 PLL, 45.25MHz ~ 862.25MHz Teletext 1.5 CVBS (In/Out), RGB (In), AudioR/L CVBS (In/Out), RGB (In), AudioR/L YPbPr, YCbCr, CVBS, AudioR/L Yes(for AT2703/AT2704) Yes(for ATxx04) 5W + 5W...
  • Page 10: Block Diagram

    Block Diagram System Block & Wiring Diagram INVERTER POWER Board PANEL MAIN Board IR & power button Bd SPEAKER-L I/O Board Tuner Scart RGB Scart RGB Key & Earphone Board SPEAKER-R Chapter 1...
  • Page 11 Block Diagram Audio SW 744052 EEPROM Chapter 1...
  • Page 12: Lcd Tv Overview

    LCD TV Overview Front Panel View Description Volume up/down Input key Menu key Channel up/down Headphone jack Volume up Volume down Input key Menu key Channel up Channel down When the OSD is on, functions the same as the Right arrow. When the OSD is on, functions the same as the Left arrow.
  • Page 13: Bottom Panel View (For Emea)

    Bottom Panel View (for EMEA) Description Power switch AC-in *HDMI-in VGA-in **DVI-in Audio-in AV-in SCART x 2 Analog antenna-in Chapter 1 For AV3, Composite and component inputs share the same audio port. * HDMI only for AT2604/AT2704/AT3204/AT3704 ** DVI only for AT2604/AT2703/AT2704/AT3204/AT3704 Note...
  • Page 14: Bottom Panel View (For Non Emea)

    Bottom Panel View (for non EMEA) Description Power switch AC-in *HDMI-in VGA-in **DVI-in Audio-in Component 1,2-in AV 1,2-in Analog antenna-in For AV3, Composite and component inputs share the same audio port. * HDMI only for AT2604/AT2704/AT3204/AT3704 ** DVI only for AT2604/AT2703/AT2704/AT3204/AT3704 Note Chapter 1...
  • Page 15: Remote Control (For Emea)

    12.WIDE: Press to toggle scaling mode between 4:3, 16:9, Panorama and Letterbox 1, 2, 3. 13.MENU: Press to open or close the Menu. 14.e (Empowering technology): Activate Acer Empowering Technology. 15.Directional keys/OK 16.MPX: Press to select the sound input, displayed in the top right-hand corner (mono, stereo, bilingual).
  • Page 16 INDEX: Press to go to the index page. SUBSTITLE: Press to view subtitles on the screen. REVEAL: Press to reveal hidden teletext information. TELETEXT: Press to switch from TV/AV to Teletext mode. SIZE: Press once to zoom teletext page to 2X.
  • Page 17: Remote Control (For Non Emea)

    11.WIDE: Press to toggle scaling mode between 4:3, 16:9, Panorama and Letterbox 1, 2, 3 12.MENU: Press to open or close the Menu. 13.e (Empowering technology): Activate Acer Empowering Technology. 14.Directional keys/OK 15.MTS: Press to select the sound input, information is displayed in the top right- hand corner (main, stereo, SAP).
  • Page 18: Basic Connection

    Basic Connection Connecting the Power Cord Connect the AC cord into the AC input on the back of the set. Connect the plug to the wall outlet as shown. (The power cord supplied varies according to your region) Connecting an Antenna Cable Connect the antenna cable to the appropriate antenna terminal on the back of the TV set as shown below.
  • Page 19 Connect the DVD player, VCR or audio / video equipment using the SCART port located at the rear of the LCD TV as shown. For EMEA: NOTE: Acer recommends the priority for connection: 1. HDMI 2. DVI 3. Component 2. SCART 3. Composite **HDMI only for AT2604/AT2704/AT3204/AT3704 *** DVI only for AT2604/AT2703/AT2704/AT3204/AT3704...
  • Page 20: Selecting The Input Source

    To display PC output on the LCD TV, connect the desktop or notebook computer to the TV as shown below. NOTE: For VGA and DVI input, Acer recommends setting your PC’s external monitor resolution to 1360 x 768 pixels @ 60Hz refresh rate.
  • Page 21 NOTE: * HDMI only for AT2604/AT2704/AT3204/AT3704 ** DVI only for AT2604/AT2703/AT2704/AT3204/AT3704 Chapter 1 TV key: Toggle Analog TV (ATV) between input sources. AV key: Toggle AV3 and HDMI(*) between input sources. COMPONENT key: Toggle COMPONENT1-2 between input sources. PC key: Toggle VGA and DVI(**) between input...
  • Page 22: Osd Navigation

    OSD Navigation Many of the advanced settings and adjustments are available through using the OSD (On Screen Display) menus, as shown in the example screenshot below. Basic operations required to navigate these menus (Picture, Audio, Channel management, Settings, Empowering) are described in this section. The first time you access the OSD, you will be asked to choose your language settings.
  • Page 23: Adjusting The Osd Settings

    Adjusting the OSD Settings You can use the OSD to adjust the picture quality, audio settings, channel settings, general settings and the Empowering Technology settings. For advanced settings, please refer to the following table. Adjusting the picture quality Adjusting the audio settings Adjusting the channel management Adjusting other options Adjusting the settings...
  • Page 24 NOTE: The options available on the OSD may vary depending on the TV signal source. Some digital options may not be available with an analog signal and vice versa. Chapter 1...
  • Page 25: Empowering Technology

    Empowering Technology The Empowering Key opens up the Acer Empowering Technology functions. In TV mode, the choice is between Scenario mode and Favorite channel. The default setting for both modes is Scenario mode. Set-up Empowering mode To change the Empowering Key’s default setting: Press and hold the Empowering Key for more than two seconds to open the menu.
  • Page 26 Defaulting setting in different Empowering mode Scenario mode in TV (default setting) Scenario mode has five preset viewing modes designed to give you the best picture quality when watching a particular kind of program. There are five pre-defined audio and video settings for optional enjoyment of the following scenarios: Standard TV, Movie, Sport, Concert, Game, User.
  • Page 27 Favorite channel mode in TV Favorite channel allows you to store five of your favorite TV channels and flick between them at the touch of a single button. Storing favorite channels Viewing the favorite channels Chapter 1 Select your desired channel, then press the MENU key on the remote control.
  • Page 28: Advanced Features

    Advanced Features PIP / PBP / POP Press the PIP / PBP / POP button once to display activate picture-in-picture (PIP). Press twice to activate picture-by-picture (PBP). Press three times to activate picture-on-picture (POP). Then, the POP screens will display the TV channel programs one by one. NOTE: The OSD menu is not available in PIP / PBP / POP modes.
  • Page 29: Locking Tv Content

    Lock TV Locking TV content Lock TV is a handy feature that can block a single channel, multiple channels or all TV sources. Lock TV allows you to enter a password and effectively stop anyone without the password from watching TV. Follow the procedures below to enable this feature.
  • Page 30 Setting a personal PIN NOTE: The default PIN for this TV is “0000”. First enter “0000” when you want to change the PIN. If you forget your PIN, please enter 6163 to reset. Navigate to the channel you wish to manage. Press the MENU key on the remote control to bring up the OSD.
  • Page 31 Locking a single channel Chapter 1 Navigate to the channel you wish to manage. Press the MENU key on the remote control to bring up the OSD. Use the directional keys to navigate to the management menu. Then select Lock this channel. Enter you PIN.
  • Page 32 Locking your TV Navigate to the channel you wish to manage. Press the MENU key on the remote control to bring up the OSD. Use the directional keys to navigate to the select Lock TV. Enter a four-digit password. Type it again and press OK to reconfirm. Press MENU to exit.
  • Page 33 Re-scan for Channels The first time you completed the setup wizard, all available channels were listed. If you need to re- scan for new channels, please follow the steps below: Chapter 1 Scanning for channels Auto-scan Press the MENU key on the remote control to bring up the OSD.
  • Page 34: Widescreen Display Mode

    Widescreen Display Mode Your Acer LCD TV has a special widescreen mode that allows you to toggle between 4:3, 16:9, Panorama and Letterbox 1, 2 and 3 type view. Press the WIDE key on the remote control to toggle the display between the four wide modes.
  • Page 35: Dimensions

    Dimensions NOTE: Unit: mm Chapter 1...
  • Page 36: Source Options

    Source Options Chapter 1...
  • Page 37: Chapter3 Machine Disassembly And Replacement

    Machine Disassembly and Replacement This chapter contains step-by-step procedures on how to disassemble the LCD TV 2703 for maintenance and troubleshooting. To disassemble the LCD TV 2703, you need the following tools: Wrist grounding strap and conductive mat for preventing electrostatic discharge Small Philips screw driver Philips screw driver NOTE: The screws for the different components vary in size.
  • Page 38: General Information

    General Information Before You Begin Before processing with the disassembly procedure, make sure that you do the following: Turn off the power to the system and all peripheral. Unplug the AC adapter and all power and signal cables from the system. NOTE: There are several types of screws used to secure the product.
  • Page 39: Disassembly Procedure

    Disassembly Procedure Removing the TV Stand Release the four screws fastening the TV stand. Then pull out the TV stand. Removing the I/O Cover Release those screws marked in yellow for removing the I/O cover. Slide the I/O cover shown as arrows then detach it. Chapter 2...
  • Page 40: Removing The Rear Cover

    Removing the Rear Cover Release those screws as shown for removing the rear cover. Then lift the rear cover. Removing the ESD Shield Top Release the nine screws securing the ESD shield top. Then lift the ESD shield top as shown. Chapter 2...
  • Page 41 Removing the Main Board and I/O Board This is the upper view of the main board and the location of those connectors. Disconnect the keypad to main board cable. Disconnect the speakers to main board cable. Disconnect the LVDS to main board cable. Disconnect the inverter board to main board cable.
  • Page 42 Chapter 2...
  • Page 43 Removing the Power Supply Board Release the seven screws fastening the power supply board and the cable then detach the power supply board. Chapter 2...
  • Page 44 Removing the PCD Holder Release those screws marked in yellow. Then lift the PCD holder as shown. Chapter 2...
  • Page 45 Removing the Keypad Board and the Power Button Board Release the five screws fastening the keypad board then detach it. Release the four screws fastening the power button board then detach it. They are the keypad board and the power button board with their corresponding cables. Chapter 2...
  • Page 46: Removing The Speakers

    Removing the LCD Release the four screws on the LCD brackets. Then lift the LCD. Removing the Speakers Release the four screws securing the speaker. Repeat the anterior two steps to remove the other speaker. Chapter 2...
  • Page 47: Chapter4 Troubleshooting

    Troubleshooting Please use the following procedures as a guide for Acer LCD TV AT2703/AT2704 problems. NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or modified options may occur errors or invalid responses. Duplicate symptom and obtain the fail symptom as many as possible.
  • Page 48 Start Does the unit Power on No power on RF No Signal / Unit Hang Up AV1,AV2,AV3 LCD Fail DDC / POP PIP Fail HDTV Fail Suddenly Speaker No Sound Can’t Change to TV Channel Fail Remote Control Fail Button Function Fail Factory Mode Chapter 3...
  • Page 49 Power Cord Power Cable Power Board Main Bard Chapter 3 Replacement Replacement Replacement Replacement...
  • Page 50 LCD No Back Light CCFT Cable Inverter Board LCD Panel Main Board Replacement Replacement Replacement Replacement LCD No Display LCD Cable Main Board LCD Panel Chapter 3...
  • Page 51 Chapter 3 Button Board I/O Board Main Board Replacement Replacement Replacement...
  • Page 52 Main Board IR Cable Replacement IR board Replacement Main Board Replacement Replacement Chapter 3...
  • Page 53 Chapter 3 IO Board Main Board Button Cable Button Board Main Board Replacement Replacement Replacement Replacement Replacement...
  • Page 54 Power Board Replacement Main Board Replacement Chapter 3...
  • Page 55 Head phone Cable Chapter 3 Speck Cable Replacement Speaker Replacement Replacement Main Board Replacement IO Board Replacement...
  • Page 56 Button Board Button Cable Replacement Replacement IO Board Replacement Main Bard Replacement Chapter 3...
  • Page 57: Chapter6 Fru (Field Replaceable Unit) List

    NOT be noted on the printed service guide. For Acer authorized service providers, your Acer office may have a different part number code from those given in the FRU list of this printed service guide. You MUST use the local FRU list provided by your regional Acer office to order FRU parts for service.
  • Page 58: Exploded Diagram

    Exploded Diagram Chapter 4...
  • Page 59 Item LCD bezel assy Power IR LED assy Keypad&AV3 board Speaker Left Translation board Power board Stand assy Shield down Cable IB-GND Cable LVDS Cable MB-AV3 Cable MB-PWR Screw T3*B-P(black) Screw T3*12-B(NI)EP Screw M3.0*3 P (BK) Screw M3*6-B(BNI) Screw M4*12-P (MC) Gasket RS Label IO Nut M3x12.4...
  • Page 60: Parts

    Parts The latest parts information will be updated shortly. Chapter 4...