Acer AT2001 Service Manual
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Acer AT2001 Service Manual

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AT2001
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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  • Page 1 AT2001 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 AT2001 service guide. Date Chapter Updates...
  • Page 3 Copyright Copyright © 2005 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

    Chapter 1 System Specifications...1 Features ......... 1 Block Diagram .

  • Page 7: Chapter 1 System Specifications

    System Specifications Features The chapter describes the function and performance targets for the AT2001 LCD TV which can support PAL systems. LCD Panel Max. resolution: 800X600 Lamp Quantity:Direct 6 U-lamp Display area: 20 inches diagonal Display color: 16.7M(8 bits) colors...
  • Page 8 Input current: 1.5A Max.Power output: 63 Watts Stand-by: 5 Watts Max. Remote COntrollers Multi-function remote controller Speaker Internal speaker. 3W*2 stereo, volume adjustable. Others On screen display adjustment function ISP(In System Programming) function available for revising driver easily. Chapter 1...
  • Page 10 CVBS2 AV(L,R) TV(L,R) OUT(L,R) SCART IN(L,R) SCART...
  • Page 11 Pin Definition Between Main Board and I/O Board...

  • Page 12: Lcd Panel Characteristics

    LCD Panel Characteristics General Description This LCD TV adopts AU display modules which are color active matrix thin film transistor(TFT) liquid crystal display(LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel, a driving circuit and a backlight system. This TFT LCD has a 20 inch diagonally measured active display area with SVGA resolution ( 600 vertical by 800 horizontal pixel array).

  • Page 13: Optical Characteristics

    Optical Characteristics Optical characteristics are determined after the unit has been ‘ON’ and stable for arround 2Hrs in a dark environment at 25 °C. The values specified are at an approximate distance 50cm from the LCD surface at a viewing angle of F and q equal to 0 °. FIG.
  • Page 14 Note 1: Ambient temperature = 25℃. Note 2: To be measured in dark room after backlight warm up 30 minutes. Note 3: To be measured with a viewing cone of 1°by Topcon luminance meter ELDIM EZContrast 160D. Note 4: To be measured with the detector PR880 Note 5: Definition of response time: The output signals of BM-7 are measured when the input signals are changed from “Black”...
  • Page 15 Note 8: Definition of viewing angle: Normal φ = 90 ° , Up φ = 180 ° , Left θ φ φ = 0 ° , Right φ = 270 ° , Down Note 9: Definition of white uniformity: White uniformity is calculated with the following formula. Luminance are measured at the following thirteen points (1~13).

  • Page 16: Display Electrical And Function Specifications

    Display Electrical and Functional Specifications Input and Output Signals This LCD TV shall have the ability to operate under following range with stable blue color of LED indicated. Any signal outside of the limits (any combination) shall not cause any damage to the unit or driving source.

  • Page 17: Video Input

    VGA input Horizontal input frequency range Vertical input frequency range Max. Resolution The LED shall indicate green color and OSD will show “ Out of Range “ message within 5 seconds after signal is out of range or down scaling support from selected inpu The LED shall indicate green color and OSD will show “...
  • Page 18 PC Stereo Input Level : 500mVrms Type : Stereo R/L Channels Impedance : More than 22kΩ Jack : 3.5mm Stereo jack , Black color Headphone output: Level: 0.5W rms/per Channel(typ.) for 16 ohm earphone Type: Stereo R/L Channels Jack: 3.5mm Stereo Built-in Speaker Max.

  • Page 19: Vga Input

    RF Input Indication of input level : 75Ω terminate value No. PARAMETER Video Output Level Video S/N Noise limiting Video amplitude at discrete frequencies Sound carriers rejection Audio S/N Frequency Range for PAL Audio sensitivity VGA Input Separate Sync: Level: Low = 0 to 0.8V Polarity: Positive or Negative...
  • Page 20 D-Sub Pin Out ( Pantone 661C, Blue color ) PIN Signal Red Video Green Video Blue Video Ground Ground Red Ground Green Ground Blue Ground Terminals Configuration 75Ω DIN45325 ( IEC169-2 ) Type AV 1, S1 RCA for CVBS, Audio R / L S Din for S-Video SCART SCART for R.G.B and Audio R / L PC Analog Port...

  • Page 21: Comb Filter

    TV System This LCD TV could support PAL / SECAM ( CCIR B/G, D/K, I and L/L’ ) system. The system allocation as following: TV System Configurations: Destination Color System Sound System Stereo System Channel System Subtitles Configuration Function define Closed Caption V-Chip TeleText...
  • Page 22 Firmware Specifications Preset Mode for VGA Input 8 factory pre-set modes for VGA input is saved during the manufacturing process. Preset Pixel mode Format 720*400 640*480 640*480 640*480 800*600 800*600 800*600 800*600 This LCD TV shall have 10 or more user modes for user to creat own timing. This LCD TV would detect the used mode automatically.

  • Page 23: Power Saving

    Power Saving While VGA is selected to be input, this LCD TV is equipped with a power-management according to VESA DPMS. There is a delay of 5 seconds before the transition from On-state to power saving state to avoid unintentionally entering of a power saving state during display resolution and timing mode changes. During the period of delay, the LED shall indicate green color and OSD will show “...
  • Page 24 VESA DDC The VGA input shall be capable of continuously transmitting its Extended Display Identification (EDID) information using Display Data Channel. It shall automatically switch to DDC2 mode if a DDC2 capable host is detected in accordance with the VESA DDC standard. In addition, the display can respond to a request for EDID, to be transmitted using DDC2, level B commands.

  • Page 25: Key Function

    Control Button POWER Software On/Off MENU Press this button to open the OSD or Enter function When OSD is on: ▲ or Press ▼ Press When OSD is off: Press these buttons to select the TV channel in sequence. When OSD is on: Press Press When OSD is off:...
  • Page 26 Remote Controller Key Definition...
  • Page 27 BUTTON POWER INPUT SLEEP UP/DOWN Navigates up and down in the on-screen display (OSD) menus. LEFT/RIGHT Navigates left and right in the on-screen display (OSD) MENU RED, activates Teletext command or the Sound menu when GREEN, activates Teletext command or the Picture menu when TEXT HOLD Temporarily holds the current Teletext page.
  • Page 28 Button Key Definition BUTTON VIEWING FUNCTION (OSD OFF) Lowers the sound level. Increases the sound level. Selects the input source. Turns the LCD TV ON/OFF. Activates the OSD main menu. Displays the previous stored channel. Displays the next stored channel. MENU FUNCTION (OSD ON) Reduces a menu option value.
  • Page 29 Sound Systems The System has a feature that allows reception of sound other than the main audio for the program. This feature is called Multi-channel Television Sound (MTS). The System with MTS can receive mono sound, stereo sound and Secondary Audio Programs (SAP). The SAP feature allows a TV station to broadcast other information, which could be audio ( mono ) in another language or something completely different like weather information.
  • Page 30 OSD Menu Abstract Structure OSD Menu for EURO...
  • Page 31 OSD Translations :...
  • Page 32 Performance Specifications The performance shall be check at 25 White Balance and Uniformity : Normal Warm : Cold : Display Area, Phase , Center and Tilt Display Area: 20 inches diagonal H-Phase: A-B Less than 1.5mm V-Center: Tilt: E-F Less than 1mm Max.
  • Page 33 The inverter which is used to light up back-light of LCD panel shall be well designed to meet requirement of panel’s specification.

  • Page 34: Accessories

    Accessories Following accessories would be contained to shipout with LCD TV. Cables Power Cord Length: 1.8meters +15mm/-0mm Cable Color: Black color Quantity: AV ( Video & Audio) Cable Length: 1.8meters +15mm/-0mm Cable Color: Black color Quantity: SCART Cable Length: 1.8meters +15mm/-0mm Cable Color: Black color Quantity: TV Antenna Cable...

  • Page 35: Mechanism Specification

    Mechanism Specifications Cosmetic and quality standards for injection molded plastic parts This specification defines the criteria to be used for inspection resulting in the acceptance or rejection of parts due to visual, cosmetic and functional requirements for customer visible surfaces. Surface quality Surface color, gloss, texture, blemishes, and all other irregularities in the plastic shall comply with Quanta’s approval sheet.

  • Page 36: Physical Specifications

    Torque Specifications Tilts Torque : Refer to engineering specification. Physical Specifications Overall Dimensions: Height : Width : Depth : Base Tilt: Mass Mass of display with cable approx.: VESA Mounting Holes 100 m/m * 100 m/m Packing Specifications Carton Label Refer to packing instruction Pallet Dimension Refer to packing instruction...

  • Page 37: Regulatory And Reliability Requirements

    Regulatory and Reliability Requirements Regulatory Requirements Product Safety Agency Approvals Emissions/Susceptibility Power Management ( Reserved )

  • Page 38: Environmental Requirements

    Environmental Requirements This display shall meet the following environmental requirements under normal operating conditions. Operating 25° ± 5° for Purity, White Point, Mis-convergence, Luminance measurements and White uniformity measurement Operating temperature 5°C to 35°C Operating humidity 10% to 90% (non-condensing) Storage and Shipping Storage temperature -20°C to 60°C...
  • Page 39 Transportation Please refer to Packing instruction Reliability Performance Electrostatic Discharge Requirements This display shall withstand 4kV for contact discharge and 8kV for air discharge of Electrostatic Discharge to meet the acceptance criteria as specified in EN55024. Hinge Life Mean time between failure (MTBF) For the purposes of demonstrating the MTBF of this product, a failure is defined as the inability of the product to function in accordance with this specification.
  • Page 40 檔名: 2-2-C2A_EU product spec_0601-2005 目錄: D:\00-ACER PROJECT-0529-2005\00-ACER-C2A-- AUO-20-inch\00--C2A-MDRR-MRR document 範本: C:\MSOffice\Template\商用文書\SPEC1.dot 標題: VT1N product spec 主旨: 作者: Golden 關鍵字: 註解: 建立日期: 2005/5/23 2:23:00 PM 修訂版編號: 前次更新日期: 2005/6/2 11:09:00 AM 前次存檔人員: 89080103 編輯總時間: 281 分鐘 最後列印在: 2005/6/14 10:49:00 AM 最後列印的字數 頁數: 字數:...

  • Page 41: Chapter 2 Machine Disassembly And Reassembly

    Machine Disassembly and Replacement To disassemble the AT2001, you need the following tools: Wrist grounding strap and conductive mat for preventing electrostatic discharge. Wire cutter. Phillips screwdriver (may require different size). NOTE: The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components to avoid mismatches when putting back the components.

  • Page 42: General Information

    General Information Before You Begin Before proceeding with the disassenbly 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. Chapter 3...

  • Page 43: Disassembly Procedure

    Disassembly Procedure This section tells you how to disassemble the system when you need to perform system service. Please also refer to the disassembly video, if available. CAUTION: Before you proceed, make sure you have turned off the system and all peripherals connected to it. Chapter 3...

  • Page 44: Removing The Stand Assy

    Removing the Stand Assy Remove the four screws securing the stand assy and remove it. Remove the screw securing the stand neck and stand base, and seperate them. Chapter 3...

  • Page 45: Removing The Io Box

    Removing the IO Box Remove the two screws securing the IO box and remove it. Remove the three screws securing the IO box shielding. Remove the screw securing the IO board and remove it from the IO bracket. Chapter 3...

  • Page 46: Disassembly The Main Unit

    Disassembly the Main Unit Removing the Rear cover Remove the ten screws securing the rear cover and remove it. Disconnecting the Cables Open the cable clamp on the bracket. Disconnect the speaker cable from the Mainboard. Disconnect the button board cable and IV board cable from the mainboard.(from left to right) Disconnect the cables from the IV board.

  • Page 47: Removing The Speaker

    Removing the Speaker Remove the four screws securing the left and right speakers. Remove the speakers from the front bezel. Removing the button board Remove the three screws securing the button board and remove the botton board from the front bezel. Disconnect the button cable from the button board.
  • Page 48 Remove the two screws securing the mainboard as shown. Turn the bracket over. Remove another seven screws securing the mainboard and remove the mainboard. Disconnect the FPC cable from the mainbaord. NOTE: The mainboard color might be diffenent. Removing the IV Board Remove the four screws securing the IV board bracket and remove it.
  • Page 49 Removing the Panel Remove the nine screws securing the top panel bracket and remove it. Remove the nine screws securing the bottom panel bracket and remove it. Remove the panel from the front cover. Chapter 3...

  • Page 50: Chapter 3 Troubleshooting

    Troubleshooting This chapter provides troubleshooting information for the AT2001. No Power Check Check Check IO BOX Plug in Connection Check IO BOX Plug in Connection Change button Change button or cable or cable Chapter 4 Check Power button Check Power button...
  • Page 51 No Characters, Missing Color Check VGA cable Check VGA cable Change CON10 Change CON10 No Characters No Characters Missing Color Missing Color Check CON5 VGA Check CON5 VGA cable cable Check U12 Output Check U12 Output Check CON10 Check CON10 LCD connectors LCD connectors Check FFC...
  • Page 52 NO Signal Change VGA Cable Change VGA Cable Change CON5 Change CON5 Change NG component Change NG component Chapter 4 No signal No signal Check VGA Check VGA cable cable Check CON5 Check CON5 Check H,V sync Check H,V sync Input circuit Input circuit Change U12...
  • Page 53 Chapter 4...

  • Page 54: Chapter 4 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 55: Exploded Diagram

    Exploded Diagram Chapter 6...
  • Page 56 Number Chapter 6 Item Front Cover Assy Speaker Assy Screw 3 X 20.4-B(NI) AL-FOIL-LCD Panel Bracket AU LCD(TFT) 20.1” (SVGA) Screw M3.0X12-B(MC) VS3 Button Assy Screw T3X8(NI) Cable Assy (MB-Button) Cable VS8 M/B(FFC, 50P, 300MM, REV3A) VS3 M/B Assy EU Cable Assy Inverter(15P, REVIA)GL Inverter-Bracket INV Module(LCE)

  • Page 57: Fru List

    FRU List AT2001 FRU List Picture Accessory Adapter Boards Case/Cover/Bracket Assembly Partname And Description REMOTE CONTROLLER - EU ADAPTER 15V 4.2A ADP-63BB B 100~240V TUNER MODULE - PAL MAIN BOARD - PAL INVERTER BOARD BUTTON BOARD STAND NECK ASSY STAND BASE ASSY Part Number 25.M04V7.001...
  • Page 58 AT2001 FRU List Picture Cables Chapter 6 Partname And Description STAND BRACKET FIX FRONT COVER BACK COVER I/O COVER WALL MOUNT BRACKET ASSY INVERTER SHIELDNG LCD BRACKET AU POWER CODE EU 3P 1.8M POWER CODE UK 3P 1.8M INVERTER CABLE Part Number 60.M04V7.003...
  • Page 59 AT2001 FRU List Picture Miscellaneous Speaker Screws Partname And Description CABLE - MB TO LCD CABLE - MB TO BUTTON BOARD CABLE - IB TO GROUND CABLE - VB1D PAL CABLE - SCART TO SCART LCD(TFT) AU 20.1'' A201SN02 V4(SVGA)
  • Page 60 AT2001 FRU List Picture Partname And Description Part Number SCREW M3.0*6.0-I-NI SCREW M3*4-I (NI) SCREW M3.0*12.0-B(MC) SCREW 3 X 20.4-B (NI) SCREW T3*8 P (NI) IO NUT VT1(MBVT1002,REV3A) Chapter 6...

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