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Acer AT3220B Service Manual
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Acer AT3220B Service Manual

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Acer AT3220A/3220B/3220 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
Project Code: T58
PRINTED IN TAIWAN

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  • Page 1 Acer AT3220A/3220B/3220 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 Project Code: T58 PRINTED IN TAIWAN...

  • Page 2: Revision History

    Revision History Please refer to the table below for the updates made on Acer LCD TV AT3220/3220A/3220B service guide. Date Chapter Updates 2006/08/08 Chapter 1 Revise PIP/PBP/POP supporting configuration on page 37.
  • 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: Denotes actual messages that appear SCREEN MESSAGES 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.
  • 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 7: System Specifications

    Chapter 1 System Specifications Features This LCD TV was designed with the user in mind. Here are just a few of its many features: LCD Panel Max. resolution: 1366x768 Display area: 32 inches diagonal Display color: 16.7 M colors (8 real bits per color) Life time: 60,000 hours Input Signal: 1-ch LVDS Contrast ratio: 1200:1 ( Typ )
  • Page 8 Speaker Internal speaker: 10 W * 2 stereo, volume adjustable Amplimfier: 8W * 2 stereo, volume adjustable Chapter 1...

  • Page 9: System Block Diagram

    System Block Diagram System Block and Wiring Diagram PANEL INVERTER I/O Board POWER MAIN Board A-Tuner Module AV 1 AV 2 Component1 Component2 SPEAKER IR Receiver Key Board LCD Main Board Block Diagram Chapter 1...

  • Page 10: Board Layout

    Board Layout Cable Arrangement Connector Cable Description CN908 (Power Board) Inverter Cable CN903 (Power Board) <-->CON15 (Main Audio Cable-Main board (audio) to power Board) board CN904<-->CON11 Power Cable CON6 (Main Board) -CN1(Button Board)-CN1 Button Board-IR Board (CN1)-Main Board (IR Board) (CN1) Cable CON17 (Main Board) LVDS Cable...

  • Page 11: Lcd Tv Overview

    LCD TV Overview A general introduction to Acer LCD TV ports, functions and indicators. AT3220A/AT3220B/AT3220 Front panle view The panel view below is for AT3220A/AT3220B/AT3220. Item Description Power On/Off Power on or off the LCD TV. Menu key Turn s the OSD menu On and OFF.
  • Page 12 T3220A Rear panel view Item Item Power switch PC Audio-in AC-in AV-Audio L/R + COMPONENT 1/2 HDMI AV-Audio L/R + CVBS 1/2 VGA-in Analog antenna DVI-d Chapter 1...
  • Page 13 AT3220B Rear panel view Item Item Power switch Audio L/R + CVBS + COMPONENT AC-in Audio L/R + CVBS + COMPONENT 1/2 HDMI Audio L/R + CVBS 1/2 + S-Video VGA-in Analog antenna PC Audio-in Chapter 1...
  • Page 14 AT3220 Rear panel view Item Item Power switch PC Audio-in AC-in AV-Audio L/R + CVBS + COMPONENT HDMI SCART VGA-in Analog antenna Chapter 1...

  • Page 15: General Keys

    AT3220A Remote controller General Keys Item Description POWER Press to turn your TV on/off. DISPLAY Press to display input/channel information (dependent on input/source type). MUTE Press to toggle audio on and off. Input buttons (TV/AV/ Press to select correct input mode. COMPONENT/PC) SLEEP Press to set a time period after which the TV will switch itself to standby (15, 30,...
  • Page 16 3 modes. Press to switch the sound system between stereo, main and SAP. Information is displayed in the top right-hand corner. e (Empowering Technology) Press to activate Acer Empowering Technology. VOL (+/-) Press to increase or decrease the volume. CH (up/down) Press to sequentially select the TV channel.
  • Page 17 AT3220B Remote controller General Keys Item Description POWER Press to turn your TV on/off. DISPLAY Press to display input/channel information (dependent on input/source type). MUTE Press to toggle audio on and off. Input buttons (TV/AV/ Press to select correct input mode.
  • Page 18 3 modes. Press to select the sound input, displayed in the top right-hand corner (mono, stereo, bilingual). e (Empowering Technology) Press to activate Acer Empowering Technology. VOL (+/-) Press to increase or decrease the volume. CH (up/down) Press to sequentially select the TV channel.
  • Page 19 AT3220 Remote controller General Keys Item Description POWER Press to turn your TV on/off. DISPLAY Press to display input/channel information (dependent on input/source type). MUTE Press to toggle audio on and off. Input buttons (TV/AV/ Press to select correct input mode. SCART/PC) SLEEP Press to set a time period after which the TV will switch itself to standby (15, 30,...
  • Page 20 WIDE Press to toggle scaling mode between 4:3; 16:9, Panorama and Letterbox 1, 2, 3 modes. Press to select the sound input, displayed in the top right-hand corner (mono, stereo, bilingual). VOL (+/-) Press to increase or decrease the volume. CH (up/down) Press to sequentially select the TV channel.

  • Page 21: Basic Connection

    Basic connection Connecting the power cord Connect the AC cord into the AC input on the back of the set. Connect the male plug to the wall outlet as shown. For AT3220A: For AT3220B: For AT3220: Chapter 1...

  • Page 22: Connecting An Antenna/Cable

    Connecting an antenna/cable Connect the antenna cable to the appropriate antenna terminal on the back of the TV set as shown below. Getting started watching your TV Select the setup language you prefer. Please select country. Ensure that your co-axial cables connected correctly before proceeding. Chapter 1...
  • Page 23 Scan for analog channels. Setup is now complete. You are ready to begin watching TV. If you leave the setup process before it is complete, you will be given a choice of options: 1. Resume setup 2. Resume setup wizard at next startup 3.

  • Page 24: Connecting External Audio/Video Device

    Connect your DVD player, VCR or audio/video equipment using the SCART port located at the rear of your LCD TV as shown below. For AT3220A: Source-IN Yellow White Blue Green S-video NOTE: Acer recommends the following priority for connection types: HDMI -> DVI ->D-Sub ->COMPONENT - > S-Video -> Composite. Chapter 1...
  • Page 25 For AT3220B: Yellow White Blue Green Chapter 1...
  • Page 26 Source-IN Yellow White Blue Green * Acer recommends the following priority for connection types: HDMI -> COMPONENT -> SCART -> Composite. TV-OUT *SCART-out only works with analog broadcasts. Connecting a camera, camcorder, video am or headphones Connect your camera or camcorder to the video/audio ports on the rear of the TV set as shown below.

  • Page 27: Connecting A Pc Or Notebook Computer

    To display PC output on your TV, connect your PC or notebook computer to the TV as shown below. For AT3220A: NOTE: For VGA and DVI input, Acer recommends setting your PC’s external monitor resolution to 1360 x 768 pixel @ 60 Hz.

  • Page 28: Selecting The Input Source

    For AT3220: Selecting the input source Once you have connected your antenna or external equipment to the TV, you need to select the correct input source. Press the corresponding button on the remote control to select the correct input source. Chapter 1...
  • Page 29 For AT3220A/AT3220B: COMPONENT Item Input Button Guide TV key Toggle Analog TV (ATV) between input sources. AV key Toggle AV1, AV2, AV3-CVBS* and HDMI between input sources. COMPONENT key Toggle COMPONENT 1, COMPONENT2 and AV3-COMPONENT* between input sources. PC key Toggle VGA between input sources.

  • Page 30: Osd Navigation

    OSD navigation Many of the advanced settings and adjustments are available through using the OSD (onscreen display) menus, as shown in the example screenshot below. Basic operations required to navigate these menus (Picture, Audio, Channel management, Options, Settings and Empowering) are described in this section. Navigating the OSD with the remote control NOTE: You can also interact with these menus using the front panel controls.

  • Page 31: Adjusting The Osd Settings

    Adjusting the OSD settings The OSD can be used for adjusting the settings of your LCD TV. Press the MENU key to open the OSD. You can use the OSD to adjust the picture quality, audio settings, channel settings, options, general settings, and Empowering Technology. For advanced settings, please refer to following page: Adjusting the picture quality Press the MENU key to bring up the OSD.
  • Page 32 NOTE: The options available on the OSD may vary depending on the TV signal source. Chapter 1...

  • Page 33: Empowering Technology

    Set-up Empowering mode More than 2 seconds The Empowering Key opens up the Acer Empowering Technology functions. In TV mode, the choice is between Scenario mode and Favorite channel. Set-up Empowering mode To change your Empowering Key’s default setting: Press and hold the Empowering Key for more than two seconds to open the menu.

  • Page 34: Default Setting In Different Empowering Mode

    Default 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 optimal enjoyment of the following scenarios: Standard TV, Movie, Sport, Concert, Game, User.
  • Page 35 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 ot navigate these menus (Picture, Audio, Settings, Options, Empowering) are described in this section. The first time you access the OSD, you will be asked to choose your language settings.
  • Page 36 Teletext Most TV channels also broadcast information via the teletext feature. This Acer LCD TV has 252 pages of memory which will store pages and subpages, thereby reducing waiting time. The teletext buttons on the remote control are listed below.

  • Page 37: Advanced Features

    Advanced Features PIP/PBP/POP Press the PIP/PBP 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 on by one. POP (Picture-on-Picture) PIP (Picture-in-Picture) PBP (Picture-by-Picture) NOTE: The OSD menu is not available in PIP/POP/PBP modes.

  • Page 38: Locking Tv Content

    1a. Press the ACTIVE key to toggle between PBP screens. 1b. Press the TV, AV, COMPONENT or PC keys, number keys or COMPONENT CH up or down to change the content of the active screen. 2. Press the SWAP key to change the content between the primary and the PBP screen.
  • Page 39 to enable this feature: Setting a personal PIN Press the MENU key on the remote control to bring up the OSD. Use the directional keys to navigate to the Settings menu. Then select Set PIN. (see note) Enter a four-digit password. Type it again and press OK to reconfirm. Press MENU to exit.

  • Page 40: Hardware Specifications And Configurations

    Hardware Specifications and Configurations Electro / Optical Size of screen 32 inches for AT320A/AT3220B/AT3220 LCD panel supplier Screen aspect ratio Type of screen TFT with Super MVA technology or SIPS or QSV Screen resolution 1366 x 768 Display colors 16.7 M colors (8 real bits per color) Chromaticity 0.638...
  • Page 41 Mains Power supply electrical The power supply for this product is an internal converter, with a non-replaceable fuse internally. This converter is designed specification to meet CE mark requirement. • Input voltage and frequency range: The operating range of line voltage is AC 90 volts to 264 volts, 47Hz to 63 Hz.
  • Page 42 Hard / Soft Performance Languages Czech, Danish, Dutch, English, French, German, Italian, Polish, Portuguese, Russian, Spanish and Swedish supported Starting time A correct picture (color, aspect ratio, stability) can be displayed <6 second after power on Wake-up behaviour The system can be waken up if the button Standby is pressed (keypad “power”...
  • Page 43 PIP/PBP Main HDMI Component 1 Component 2 O: support • X: not supprot POP (1+5, 1+12) Main and Sub Screen Combination Main HDMI Component 1 Component 2 TTX level • FLOF level 1.5 source can be RF, DVBT or AV. •...
  • Page 44 Video management • User adjustments: contrast, brightness, color, tint (NTSC), sharpness • Color temperature: cold, middle-cold, standard, middle- warm, warm Aspect ratio • Aspect ratio available for all the video sources • 4/3, 16/9, panorama, letterbox1, letterbox2, letterbox3 NOTE: PC & DVI only support 4/3 & 16/9 Scenario functions Settings: Standard, movie, sport, concert, game,...

  • Page 45: Environmental Requirements

    Environmental Requirements The TV shall meet the following environmental requirements under normal operating conditions. Operating +/- 5 for purity, white point, mis-convergence, luminance measurements and white uniformity measurement Operating temperature: C to 35 Operating humidity: 10% to 90% (non-condensing) Storage and Storage temperature: C to 60 Shipping temperature:...
  • Page 46 Drop Test The packaged display shall be capable of passing drop test as specified in following specification without any measurable degradation in performance or detectable mechanical or cosmetic damage. Filter: 330 Hz Dropping way: 1 corner, 3 edges, 6 flats Dropping height: see the table below Weight(kg) Corner, edge,...

  • Page 47: Machine Disassembly And Replacement

    Chapter 2 Machine Disassembly and Replacement This chapter contains step-by-step procedures on how to disassemble the notebook computer for maintenance and troubleshooting. To disassemble the computer, you need the following tools: Wrist grounding strap and conductive mat for preventing electrostatic discharge small Philips screwdriver flat head screwdriver Philips screwdriver...

  • Page 48: General Information

    General Information Before You Begin Before proceeding with the disassembly procedure, make sure that you do the following: Turn off the power to the system and all peripherals. Unplug the AC adapter and all power and signal cables from the system. Remove the battery pack.

  • Page 49: Disassembly Procedure Flowchart

    Disassembly Procedure Flowchart The flowchart on the succeeding page gives you a graphic representation on the entire disassembly sequence and instructs you on the components that need to be removed during servicing. For example, if you want to remove the system board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
  • Page 50 IO board. Then carefully detach the main board and the IO board from the main unit. (Note: This step is for AT3220B) 10. Remove the screw holding the power board ground cable and remove two screws (indicating by the red arrows) fastening the switch bracket.
  • Page 51 14. Remove three screws fastening the power support bracket. 15. Then remove another three screws holding the power support bracket on the right side as shown and remove the power support bracket. 16. Remove the two screws holding the bracket on the right side as shown and remove the bracket. 17.
  • Page 52 25. Remove the two screws holding the IR board then disconnect the cables and remove the IR board. 26. Remove the four screws fastening the speaker on the right side. 27. Remove the four screws fastening the speaker on the left side then take out the speaker set. 28.

  • Page 53: Troubleshooting

    Chapter 3 Troubleshooting Use the following procedure as a guide for Acer LCD TV AT3220A/AT3220B and AT3220 problems. NOTE: The diagnostic tests are intended to test this model. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses.
  • Page 54 AT3220A Troubleshooting Guideline Can not power on Power code Check Power code Plug in? Replace Power board or Main board LED Bright? Or IO board or All cable LED Bright Check Remote control Replacement M/B Green color ? and keypad ? Replacement Remote control or IR board or Keypad board LCD Panel...
  • Page 55 LCD no backligh Inverter power Change Inverter Cable had Plug in Power Cable LCD Panel Backlight Replacement Power/B Bright ? LCD Panel Backlight Bright ? Replacement LCD Panel Inverter /B LCD Panel Backlight Replacement Main/B Bight Chapter 4...
  • Page 56 Remote controller does not have function Remote Control have Change Battery battery ? Check IR/B cable or IR Board Cable plug in Replacement IR/B Cable Press Remote Menu Key Replacement IR/B OSD can Display ? Press Remote Menu Key Replacement M /B OSD can Display ? Chapter 4...
  • Page 57 Button key does not have function Key Board Cable Check K/B cable or plug in Replacement K/B Cable Press Menu Key check Replacement K/B Cable have Function? Press Menu Key check Replacement K/B Cable have Function? Chapter 4...
  • Page 58 RF no display RF Cable Check RF cable or plug in Replacement RF Cable Replacement I/O board Replacement M/B RF Can Display Chapter 4...
  • Page 59 Component 1, 2 no display Check Component cable Component Cable or Replacement plug in? Component Cable Replacement I /O Board Component can display Replacement M/B Board Chapter 4...
  • Page 60 AV1, AV2 no display Check CVBS cable or CVBS Cable Replacement CVBS plug in? Cable Replacement I /O Board CVBS cat display Replacement M/B Board Chapter 4...
  • Page 61 Speaker does not have sound Audio R/L source Check Audio R/L had plug IN? source cable Check Video cable or Video can Display ? Replacement Video Cable Mute turn off Volume set 50 Speaker R/L cable Check Speaker cable or plug IN? Replacement Speaker cable Speaker have Sound...
  • Page 62 VGA no display DVI Cable Check DVI cable or plug in? Replacement DVI Cable Read EDID DATA EDID Data Normal ? Write EDID data DVI can display ? Replacement M /B Chapter 4...
  • Page 63 10. DVI no display DVI Cable Check DVI cable or plug in? Replacement DVI Cable Read EDID DATA EDID Data Normal ? Write EDID data DVI can display ? Replacement M /B Chapter 4...
  • Page 64 11. HDMI no display Check HDMI cable or HDMI Cable Replacement HDMI plug in? Cable Read EDID DATA EDID Data Normal ? Write EDID data HDMI can display ? Replacement M /B Chapter 4...
  • Page 65 12. HDMI no sound HDMI Cable Check HDMI cable or plug in ? Replacement HDMI CABLE Read EDID DATA EDID Data normal ? Write EDID data Sound output? Replacement Main/B Chapter 4...
  • Page 66 13. VGA/DVI no sound Check Video cable or PC or PC/DVI can Display ? Replacement VGA/DVI cable Turn off Mute function Volume set to 50 Audio Line in Check Line in cable or Cable Plug IN? Replacement Line in Cable Sound Normal ? Replacement Main/B Chapter 4...
  • Page 67 14. Component no sound Check Component cable Component Cable or Replacement plug in? Component Cable Mute turn-off Volume =30 Check Component cable Component Source Replacement can Display? Component Cable Component Sound Replacement IO /B Normal? Replace Component Sound Normal? Chapter 4...
  • Page 68 15. AV1/S-video no sound Check Video and R-L AV1/S-Video/R-L cable or Replacement Cable plug in? Video or R-L Cable Mute turn-off Volume =30 Check Video and R-L AV1/S-Video Source cable or Replacement can Display? Video or R-L Cable AV1/S-Video Sound Replacement IO /B Normal? Replace...

  • Page 69: Fru (Field Replaceable Unit) List

    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 repair and service of customer machines.
  • Page 71 AT3220A/AT3220B/AT3220 FRU List Picture Part Name (Description) Part Number ACCESSORY REMOTE CONTROLLER - USA 25.M25V7.001 REMOTE CONTROLLER - EU 25.M28V7.001 REMOTE CONTROLLER - AUS 25.M38V7.001 BOARD POWER BOARD 55.M25V7.001 FUNCTION BOARD 55.M25V7.002 IR BOARD 55.M25V7.003 IO/TURNER BOARD - PAL EU 55.M12V7.004...
  • Page 72 AT3220A/AT3220B/AT3220 FRU List Picture Part Name (Description) Part Number IO/TURNER BOARD - PAL AUS 55.M12V7.005 MAIN BOARD - PAL EU FOR AU 55.M25V7.005 MAIN BOARD - NTSC NA FOR AU 55.M28V7.002 MAIN BOARD - PAL AUS FOR AU 55.M38V7.001 CABEL LVDS CABLE - PANEL TO MB FOR AU 50.M25V7.001...
  • Page 73 AT3220A/AT3220B/AT3220 FRU List Picture Part Name (Description) Part Number CABLE - MB TO POWER BOARD 10P 50.M25V7.003 CABLE - ADUIO TO POWER BOARD 8P/7P 50.M25V7.004 CABLE - MB TO KEY TO IR TO LED 50.M25V7.005 SPEAKER CABLE 50.M12V7.005 GROUND CABLE 50.M12V7.007...
  • Page 74 AT3220A/AT3220B/AT3220 FRU List Picture Part Name (Description) Part Number FRONT BEZEL ASSY 60.M25V7.001 BACK COVER ASSY 60.M25V7.002 STAND ASSY 60.M25V7.003 LCD SUPPORT BRACKET - L 33.M25V7.001 Note: The picture shows left and right LCD support bracket. Left LCD support bracket is on the lower side.
  • Page 75 AT3220A/AT3220B/AT3220 FRU List Picture Part Name (Description) Part Number SWITCH BRACKET 33.M25V7.005 EMI SHIELDING 33.M25V7.006 STAND SUPPORT BRACKET 33.M25V7.007 FUNCTION KEY 42.M25V7.001 PCB HOLDER - PAL EU 33.M25V7.008 Note: The spare part- PCB Holder is without sponge. Please detach the spone and attach the new PCB holder if you ever change this part.
  • Page 76 AT3220A/AT3220B/AT3220 FRU List Picture Part Name (Description) Part Number SPEAKER ASSY - L 23.M25V7.001 Note: The picture shows left and right speaker. Left speaker is on the left side. SPEAKER ASSY - R 23.M25V7.002 Note: The picture shows left and right speaker. Right speaker is on the right side.
  • Page 77 AT3220A/AT3220B/AT3220 FRU List Picture Part Name (Description) Part Number CARTON CLASP VW7(JXVW7001,3A) 47.M08V7.020 Chapter 4...

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