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Acer PD721
Service Guide
Service guide files and updates are available
on the CSD web; for more information,
please refer to
http://csd.acer.com.tw
Service CD P/N: N/A

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Table of Contents

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   Summary of Contents for Acer PD721

  • Page 1 Acer PD721 Service Guide Service guide files and updates are available on the CSD web; for more information, please refer to http://csd.acer.com.tw Service CD P/N: N/A...
  • Page 2: Revision History

    Revision History Please refer to the table below for the updates made on Acer Altos PD721 service guide. Date Chapter Updates...
  • Page 3 Copyright Copyright © 2001 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, i 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: Table Of Contents

    Table of Contents Chapter 1 System Introduction................1 Technical Specification....................1 Product Overview......................3 System Block Diagram....................6 Chapter 2 Firmware Upgrade................10 Setup Procedure....................11 Upgrading Procedure.................... 11 Chapter 3 Machine Disassembly and Replacement..........17 Tool Needed......................17 General Information....................17 Removing Top Cover Module, Keypad Board and Speaker........
  • Page 8: System Introduction

    Chapter 1 System Introduction Technical Specification i t a t u l i t a l i b y t i / I / i t a l i b y t i , ) i , ) i v i t o i l "...
  • Page 9 ) t r i n i i n i t i n t i n t n i - i t l s ' r - i t l ) t r Chapter 1...
  • Page 10: Product Overview

    Product Overview Main Unit c t i Chapter 1...
  • Page 11: Panel Control

    Panel Control ) f f Chapter 1...
  • Page 12: Connection Ports

    Connection Ports t i n c t i Chapter 1...
  • Page 13: System Block Diagram

    System Block Diagram Inter Lock Speaker Switch Lamp LAMP Ballast LVPS Module Module Module D-Sub Photo Output Sensor Formatter Front-End Board Board Module S-Video Video Audio Color Wheel D-Sub Thermal Mouse Board RS232 Input IR Receiver Thermal Thermal Keypad Switch Sensor Chapter 1...
  • Page 14 Memory D-Sub output Thermal Board KDS (0-3) R.G.B.H.Vsync KDR (0-2) Standby-1 Digital R.G.B data Analog Input H.Vsync GCLK ECOMODE Image Process LVPS Module Digital Input LAMP Lit (0-7) Digital R.G.B Data UV (0-7) Standby out DCLK0 GM-VHS 7 Sec DENR GM-VVS RESET GM-VPEN...
  • Page 15 THERMAL BOARD Interface ECON KEY 7PIN 20P Connector to ERR_OUT 3P Connector *4 MAIN Formatter Board LAMPMISS BOARD FAN 1-4 POWER 15V, 5VA STANDBY ERR_OUT 2P Connector IR_ON THERMAL SWITCH 16P Connector 4P Connector *2 KEY PAD THERMAL SENSOR LM75...
  • Page 16 +12V VCC2 (DMD) VCC2,VOFFSET,VBIAS VCC2 (ASIC) VOFFSET VERSET GENERATION VBIAS VRESET RESET ASIC MBIASRST (16) CONFIG/ SEQUENCE CLOCK PROM FPGA CLK DATAPATH DPF2A CONTROL DMD CLK INPUTCLK FORMATTER 0.7” XGA DPF2A SDRAM CLK VOLTAGE ENABLES BIAS BIN FPGA CLK BIAS/RESET CONTROL DMD DATA(0..63) DATA(0..63) DMD CONTROL...
  • Page 17: Firmware Upgrade

    Chapter 2 Firmware Upgrade This chapter provides the equipment needed, setup and upgrading procedure for Firmware upgrade. Equipment Needed f n i t x t c i l i n i Chapter 2...
  • Page 18: Setup Procedure

    Setup Procedure Connect RS232 to mini din 3P Cable to COM1 of PC and PD721. COM1 DFP Port Upgrading Procedure Execute “FlashUpgrader MFC Application”. Chapter 2...
  • Page 19 2. Click “Choose” button. PD721-V05-2002.08.13\ 3. Search <pwSDK.inf> file from PD721 F/W folder, then click “Open” button. PD721-V05-2002.08.13 Chapter 2...
  • Page 20 4. Select “Serial” Port. PD721-V05-2002.08.13 5. Select “COM1” port. PD721-V05-2002.08.13 Chapter 2...
  • Page 21 6. Select Baud Rate to be “115200”, then click “Flash” button. PD721-V05-2002.08.13 7. Plug in the Power Cord to PD721, then press and hold on “Standby” key on PD721 keypad (Note : The Firmware upgrade program will be stop if you havn’t hold the standby button.)
  • Page 22 8. Downloading <Flasher.hex> and <Gui.hex> files. PD721-V05-2002.08.13 9. Keep on downloading <RomCode.hex> file. PD721-V05-2002.08.13 Chapter 2...
  • Page 23 10. After <Configdata.hex> file is downloaded, await starting up PD721 (about 2-3 seconds), then finish the upgrading procedure. PD721-V05-2002.08.13 Chapter 2...
  • Page 24: Machine Disassembly And Replacement

    Chapter 3 Machine Disassembly and Replacement This section provides disassembly procedures for PD721 Micro Portable XGA DLP Projector. Before you begin any of these procedures, be sure to turn off the power, computer system, and other attached devices; then disconnect the power cable from the electronically outlet.
  • Page 25: Removing Top Cover Module, Keypad Board And Speaker

    Removing Top Cover Module, Keypad Board and Speaker Remove three screws and one long screw from Bottom Housing. Remove four screws beside Top Housing. Lift up Top Housing and unplug three wires to Thermal Board, IR Cover Module and Speaker Board. Top Housing Bottom Housing IR Cover Module...
  • Page 26 Tear off Keypad Light Insulator, then remove four screws of Keypad Board and tear off 3M Tape then unscrew two screws of Speaker Holders to remove speaker. Speaker Rubber Left Speaker Keypad Board Speaker Holder Tape 3M J350 17*60mm Speaker Rubber Right Keypad Light Insulator Chapter 3...
  • Page 27: Removing Av Module And Connector Board

    Removing AV Module and Connector Board Turn over Bottom Housing and remove four screws from Bottom Housing. Unscrew two screws of Label Connector Module to remove Label Connector Module and remove two screws from Connector Cover Clamp. Take off Side Vent. Connector Cover Clamp Bottom Housing Side Vent...
  • Page 28: Removing Lamp Ballast And Power Supply

    Removing Lamp Ballast and Power Supply 3M Tape Remove two screws from Lamp Lamp Housing Housing. Unplug one wire to Lamp. Tear of 3M Tape, unplug three wires and unscrew four screws of Ballast Bracket to remove Ballast Module. Lamp Ballast Insulator Ballast Bracket Remove two screws from...
  • Page 29: Removing Lamp Module And Thermal Board

    Removing Lamp Module and Thermal Board Turn over Bottom Housing and loosen two screws of Lamp Cover from Bottom Housing and take off Lamp Cover. Loosen three screws of Lamp to remove Lamp. Lamp Bottom Housing Lamp Cover Unplug seven cables from Thermal Board. Remove one screw from Thermal Sensor Board.
  • Page 30: Removing Fan Module And Front End Board

    Removing Fan Module and Front End Board Remove two screws from Fan Module and take off it. Unscrew four screws and one long screw of Engine Module. Unscrew two screws to remove Fan Module. Unscrew two screws to remove Front End Board from Engine. Front End Board Chapter 3...
  • Page 31: Removing Formatter Board

    Removing Formatter Board Unscrew one hex screw from Engine Module. Unscrew three screws to remove Fan from Engine Module. Unscrew one screw to remove Fan. Engine Module Unscrew two screws to remove Heat Sink. Engine Module Unscrew four screws to remove Formatter Board.
  • Page 32: Removing Engine Module

    Removing Engine Module Engine Module Chapter 3...
  • Page 33: Chapter 4 Troubleshooting

    Chapter 4 Troubleshooting This chapter provides technicians and people who have an electronic background a primary description about maintaining the product. Moreover, you can get the appropriate operation to solve some complicated problems of component repairing and professional problems. The Troubleshooing section focus on below items: Power Troubleshooing Performance Troubleshooting Function Troubleshooting...
  • Page 34: Main Procedure

    Main Procedure Start Connect Power cord, analog or digital signal and audio signal, then turn power on A. Power Is Lamp light on ? Troubleshooting B. Image Performance Is Image OK ? Troubleshooting Is function OK? C. Function Troubleshooting D. Audio Is Audio OK? Troubleshooting Is Remote...
  • Page 35 Start Is LED Reassembly lamp Check power cord Lamp Replacement indicator OK? Replacement Cover & input power Cover assembly voltage Supply AC Change Change Change Power Main BD Ballast DC-DC Change Change Change Is Fan working? Thermal BD Fan Module DC-DC Change Can hear the...
  • Page 36: Performance Troubleshooting

    Performance Troubleshooting Start Change Change Change Have image? DMD Board DMD CHIP Change Have garbage Change DMD Board pattern? Change Uniformity OK? Engine Module Color Adjust Change Change Change Is color OK? Procedure Photo * Note 1 Sensor Board Dot defect isn’t Change compliant with DMD CHIP...
  • Page 37: Function Troubleshooting

    Color Adjust Procedure : * Notice : PC shall run R.G.B. gray scale pattern. Power on. Press “Up”, “Up”, “Left” button when the “No Signal” show on the screen. Choose “Display Source” Choose Color Wheel Index. Press “Left” or “Right” button to adjust. Note 1 : It may need to be used when you replace Main Board or Optical Engine alone.
  • Page 38: Audio Troubleshooting

    Audio Troubleshooting Start Change Can hear Change Spearker sound? Main Board Change Change Sound is clear without noise? Speaker Remote Control Troubleshooting Start Replace the battery Change Remote Controller Change IR Board Change Main Board Chapter 4...
  • Page 39: Function Test And Alignment Procedure

    Function Test and Alignment Procedure Equipment Needed t u l & i t l a t l Test Condition g i l , t n o l l t i h & g i l Chapter 4...
  • Page 40: Test Display Modes And Patterns

    Test Display Modes and Patterns Compatible Modes Analog : i l i " 3 " 3 " 6 " 9 Chapter 4...
  • Page 41 Digital : i l i Chapter 4...
  • Page 42: Function Test Display Pattern

    Function Test Display Pattern & / t s t s i . e l . l a f i n y t i l l u a i l & i l F t i h a i l . z r .
  • Page 43 B. Color Pattern (Figure 5) Full White Pattern (Figure 6) Dark Pattern (Figure 7) Gary 30 Pattern (Figure 8) Blue 180 Pattern (Figure 9) Boundary Frame (Figure 10) Chapter 4...
  • Page 44: Inspection Procedure

    Inspection Procedure " " u F " " t Y " " S E " " r o l l s ' r c i f c i f i f i o l l " r i g i l a t "...
  • Page 45 y l l t n i c i f l i b y t i t n i c i f l i t t n i c i f . s t F " " t . e l o l l s ' r Chapter 4...
  • Page 46: Chapter 5 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 47: Fru List

    REMOTE ACCESSORY REMOTE 25.320VH.001 CONTROLLER CONNTROLLER EZPRO 735(NEUTRAL) BAG W/CUSHION SOFT CARRY BAG FOR 47.720VH.014 INSIDE SOFT CASE ACER PD720 BOARD PCBA THERMAL PCBA THERMAL 55.310VH.009 SENSOR BOARD SENSOR BD EZPRO 730/735 ID=91 PCBA MAIN BOARD ASSY PCBA MAIN 55.721VH.001...
  • Page 48 Photo Part Name Description CABLES Y CABLE MINI DIN 8P Y CABLE MINI DIN 8P 50.720VH.001 TO USB “A” TYPE/D- TO USB “A” TYPE/D- SUB 1.8M SUB 1.8M CARUSO CABLE W.A 24PIN 2.0P W.A 24PIN 2.0P 324 50.720VH.002 EZPRO 755 IR FRONT CABLE W.A W.A 3P#26 IR FRONT 50.720VH.003...
  • Page 49 CABLE PWOER CORD 27.720VH.003 EUR.(UK) 1830MM SP-023+IS14 EUR.(UK) POWER CORD 1800MM CABLE PWOER CORD 27.720VH.005 BLACK (SWISS) AC 6FT BLACK (SWITZERLAND)FOR ACER POWER CORD 1830MM CABLE POWER CORD 27.720VH.002 (US,TWN) 1830MM SP30+IS14 (US,TWN) POWER CORD 1800MM CABLE POWER CORD 27.721VH.001 (AUSTRALIA)
  • Page 50 FOCUS RING PC+ABS 42.720VH.004 CS-CT52A CS-CT52A, 53A EP755 FOR ACER FRONT COVER FRONT COVER 42.720VH.005 PC+ABS CS-CT52A PC+ABS CS-CT52A EP755 FOR ACER CONNECTOR COVER CONNECTOR COVER 42.720VH.006 CLAMP CLAMP PC+ABS EZPRO 755 SIDE VENT PC+ABS SDIE VENT PC+ABS 42.720VH.007 EzPro 755...
  • Page 51 THERMAL BOARD 42.720VH.012 STAND STAND PC+ABS EZPRO FAN GUIDE FRONT FAN GUIDER FRONT 42.721VH.001 NORYL CS-CT52A NORYL CS-CT52A EP755 FOR ACER SPEAKER HOLDER SPEAKER HOLDER 42.720VH.013 SECC 1.0t SECC 1.0t EzPro 610 AXIAL FAN BRACKET AXIAL FAN BRACKET 33.720VH.001 AL0.8T AL0.8T EZPRO 755...
  • Page 52 LAMP COVER MODULE ASSY LAMP COVER 42.721VH.007 FOR ACER PD721(RMA) BOTTOM HOUSING ASSY BTM HSG FOR 60.721VH.001 MODULE ACER PD721(RMA) TOP HOUSING ASSY TOP HOUSING 60.720VH.002 MODULE MODULE PD720 FOR ACER (RMA) DIGITAL LIGHT DEVICE DMD 0.7 INCH XGA 12 DMD 0.7 INCH XGA 12...
  • Page 53 SPEAKER RUBBER 47.720VH.011 INSULATOR RIGHT INSULATOR RIGHT EZPRO 755 WASHER-ZN CARUSO WASHER-ZN CARUSO 47.720VH.013 LABEL NAMEPLATE AL LABEL NAMEPLATE AL 47.721.VH.001 ACER ACER KEYPAD LIGHT KEYPAD LIGHT 47.721VH.002 INSULATOR INSULATOR EZPRO LAMP COVER LIGHT LAMP COVER LIGHT 47.721VH.003 INSULATOR SILICONE INSULATOR SILICONE 1.0T...
  • Page 54 Photo Part Name Description SCREW PAN MECH SCREW PAN MECH 86.320VH.003 M3*4 NI M3*4 NI SCREW PAN MECH SCREW PAN MECH 86.721VH.006 M2*4 BLACK M2*4 BLACK SCREW PAN MECH SCRWE PAN MECH 86.721VH.007 M2*5 BLACK M2*5 BLACK SCREW PAN MECH SCRWE PAN MECH 86.721VH.008 M3*12 BLACK...

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