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Acer PD721

Service Guide

Service CD P/N: N/A

Service guide files and updates are available

on the CSD web; for more information,

please refer to http://csd.acer.com.tw

Summary of content (54 pages)

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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.
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Revision History Please refer to the table below for the updates made on Acer Altos PD721 service guide.
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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. Disclaimer The information in this guide is subject to change without notice.
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Conventions The following conventions are used in this manual : IV 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.
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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).
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VI
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Table of Contents Chapter 1 System Introduction........................................................................... 1 Technical Specification................................................................................................. 1 Product Overview......................................................................................................... 3 System Block Diagram...............................................................................................
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Chapter 1 System Introduction Technical Specification Item 1 Description Display DLPTM Resolution Native XGA (1024x768), SXGA (1280x1024) compressed Computer Compatibility IBM PC and Compatibles, Apple Macintoash, iMac, and VESA Standards SXGA, XGA, SVGA, VGA(resizing) Video Compatibility NTSC M(3.58/4.
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Item Description Computer Input - 1 HDB 15-Pin D-Sub (VGA/Component/HDTV input port) - 1 DVI Connector - 2 Audio Mini Jack (1 for 15-pin D-SUB, 1 for DVI) I/O Connectors AV Input - 1 Mini DIN for S-Video Input Connector - 1 RCA Jack for Composite Video Input Connector - 1 Audio Mini Jack for S-Video/Composite Video Output - 1 Mini D-SUB 15-Pin for Monitor Loop Through - 1 Audio Mini Jack for monitor loop through - 1 Remote Mouse Port AC Power Cord 15-Pin VGA Signal Cable (1.
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Product Overview Main Unit Item 3 Description 1 Panel Control 2 Power Connector Power Switch 3 Connection Ports 4 Focus Ring 5 Zoom Lens 6 Zoom Ring 7 S p e a ke r 8 Remote Control Receiver 9 Elevator Button 10 Elevator Foot Chapter 1
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Panel Control Item Chapter 1 Description 1 Lamp Warning LED 2 Temperature Warning LED 3 Volume 4 Mute 5 Menu (On/Off) 6 Four Directional Select Keys 7 Enter 8 Zoom 9 Re-sync 10 Source 11 Power / Standby 4
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Connection Ports Item 5 Description 1 RS232 Input Connector 2 Audio Input for Video 3 Composite Video Input Connector 4 S-Video Input Connector 5 Audio Input for DVI 6 DVI Input Connector 7 Audio Input for Computer 8 PC Analog Signal / HDTV / Component Video Connector 9 Audio Output Connector 10 Monitor Loop-through Connector 11 Remote Mouse Input Connector 12 Power Switch 13 Power Connector Chapter 1
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System Block Diagram Speaker Inter Lock Switch Lamp Ballast Module LVPS Module D-Sub Output LAMP Module Photo Sensor Formatter Board Module Front-End Board S-Video Video Audio DVI D-Sub Mouse RS232 Input Color Wheel Thermal Board IR Receiver Fan Chapter 1 Thermal Sensor Keypad Thermal Switch 6
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Chapter 1 Memory D-Sub output Thermal Board KDS (0-3) KDR (0-2) ERR Standby-1 R.G.B.H.Vsync Digital R.G.B data H.Vsync SDA SCL GCLK Image Process Main Board Block Diagram Digital Input Video Decoder y (0-7) UV (0-7) GM-VHS GM-VVS GM-VPEN GM-VCLK Standby out 7 Sec RESET MCLK DCLK MIS ECOMODE LVPS Module LAMP Lit Digital R.G.
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8 THERMAL BOARD Interface STB ECON KEY 7PIN 3P Connector *4 20P Connector to Formatter Board MAIN BOARD LAMPMISS POWER 15V, 5VA STANDBY ERR_OUT IR_ON 2P Connector THERMAL SWITCH 4P Connector *2 16P Connector KEY PAD THERMAL SENSOR LM75 Chapter 1 Thermal Board Block Diagram FAN 1-4 ERR_OUT
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Chapter 1 +5V +12V VCC2 (DMD) VCC2 (ASIC) VOFFSET VCC2,VOFFSET,VBIAS VERSET GENERATION VBIAS VRESET RESET ASIC MBIASRST (16) DATA (8) FPGA CLK DATAPATH FORMATTER DPF2A DPF2A CONTROL INPUTCLK VOLTAGE ENABLES BIAS BIN BIAS/RESET CONTROL DMD CONTROL PBUS2 FPGA CLK VSYNCZ DMD CLK SDRAM CLK DMD DATA(0..63) DMD 0.7” XGA DATA(0..
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Chapter 2 Firmware Upgrade This chapter provides the equipment needed, setup and upgrading procedure for Firmware upgrade. Equipment Needed Item Description Bootcode.axe Bootcode.hex Configdata.hex Gui.hex RomCode.axe Software Flasher.hex pwSDK.inf ChkSum.txt Flasher.hex DISPSUM.exe FlashUpgrader MFC Application Fixture : - Cable RS-232 (Blue To Mini Din 3PIN 1800mm) (P/N : 42.86301.001, Rev.
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Setup Procedure 1. Connect RS232 to mini din 3P Cable to COM1 of PC and PD721. COM1 DFP Port Upgrading Procedure 1. 11 Execute “FlashUpgrader MFC Application”.
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2. Click “Choose” button. PD721-V05-2002.08.13\ 3. Search file from PD721 F/W folder, then click “Open” button. PD721-V05-2002.08.
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4. Select “Serial” Port. PD721-V05-2002.08.13 5. Select “COM1” port. PD721-V05-2002.08.
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6. Select Baud Rate to be “115200”, then click “Flash” button. PD721-V05-2002.08.13 1 2 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.) PD721-V05-2002.08.
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8. Downloading and files. PD721-V05-2002.08.13 9. Keep on downloading file. PD721-V05-2002.08.
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10. After file is downloaded, await starting up PD721 (about 2-3 seconds), then finish the upgrading procedure. PD721-V05-2002.08.
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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. Moreover, when you disassemble the projector, be sure to put the screws in a safe place and separate them according to grouping.
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Removing Top Cover Module, Keypad Board and Speaker 1. 2. 3. 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 Speaker Board Keypad Board 4. Unscrew one screw to remove Speaker Board Unscrew four screws to remove IR Cover Module, Vent.
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5. 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.
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Removing AV Module and Connector Board 1. 2. 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 3. 4. Remove two screws and four long screws from Label Connector Module. Unscrew four screws of Connector Board to remove it.
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Removing Lamp Ballast and Power Supply 1. 2. 3M Tape Remove two screws from Lamp 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 Housing Lamp Ballast Insulator Ballast Bracket 3. 4. Power 5. Remove two screws from Power Socket Bracket and take off it. Loosen one screw of Power supply from grounding. Unscrew four hex screws of Power Supply to remove it.
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Removing Lamp Module and Thermal Board 1. 2. 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 3. 4. 5. Unplug seven cables from Thermal Board. Remove one screw from Thermal Sensor Board. Unscrew one screw and one hex screw to remove Thermal Board. (The one hex screw is under one screw of Thermal Sensor Board) Unscrew three screws of Fan to remove Fan.
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Removing Fan Module and Front End Board 1. 2. 3. 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. Fan 4. Unscrew two screws to remove Front End Board from Engine.
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Removing Formatter Board 1. 2. 3. Unscrew one hex screw from Engine Module. Unscrew three screws to remove Fan from Engine Module. Unscrew one screw to remove Fan. Engine Module Fan 4. 5. 6. Unscrew two screws to remove Heat Sink. Unscrew four screws to remove Formatter Board. Unscrew two screws to remove Safe Switch.
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Removing Engine Module Engine Module 25 Chapter 3
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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: 1. Power Troubleshooing 2. Performance Troubleshooting 3. Function Troubleshooting 4. Audio Troubleshooting 5.
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Main Procedure Start Connect Power cord, analog or digital signal and audio signal, then turn power on Is Lamp light on ? No A. Power Troubleshooting Yes Is Image OK ? No B. Image Performance Troubleshooting Yes Is function OK? No C. Function Troubleshooting Yes Is Audio OK? No D. Audio Troubleshooting Yes Is Remote Control OK? No E.
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28 Start Is LED indicator OK? No Check power cord & input power voltage Yes No Yes Is Fan working? Yes Supply AC Power No Change DC-DC Reassembly lamp Replacement Cover No Lamp Replacement Cover assembly OK? No Change Ballast Change Thermal BD No No Change DC-DC No Change Main BD Change Fan Module Is Lamp lit? Yes No Can hear the sound of lamp ignition Change Ballast No Change Main BD No Change Thermal BD No Change DC-DC Yes Reassembly Lamp Module End No No Replace Lamp
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Performance Troubleshooting Start Have image? No Change M/B No Change DMD Board Yes Change M/B No Change DMD Board Change DMD CHIP No Yes Have garbage pattern? No Uniformity OK? Change Engine Module No Yes Is color OK? Color Adjust No Procedure * Note 1 No Change Photo Sensor No No Change M/B Change DMD Board Yes Dot defect isnt compliant with the spec.
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Color Adjust Procedure : * Notice : PC shall run R.G.B. gray scale pattern. 1. Power on. Press Up, Up, Left button when the No Signal show on the screen. 2. Choose Display Source 3. Choose Color Wheel Index. 4. Press Left or Right button to adjust. 4Note 1 : It may need to be used when you replace Main Board or Optical Engine alone.
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Audio Troubleshooting Start Can hear sound? No Change Main Board No Change Spearker No Change Speaker No Change M/B Yes Sound is clear without noise? Yes End Remote Control Troubleshooting Start Yes Replace the battery No Yes Change Remote Controller No Yes Change IR Board No Change Main Board 31 Yes End Chapter 4
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Function Test and Alignment Procedure Equipment Needed Item Description 1 IBM PC with XGA resolution (Color Video Signal & Pattern Generator) 2 VCR with Multi-system (NTSC/PAL/SECAM) 3 Chroma meter Minolta CL-100 4 Hi-Pot Test Condition Item Chapter 4 Description 1 Circumstance Brightness : Dark room less than 60 lux 2 Inspection Distance : 2.
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Test Display Modes and Patterns Compatible Modes Analog : 33 Resolution V-Sync(Hz ) H-Sync(KHz ) Compatibility 640 x 350 70 31.5 VGA 640 x 350 85 37.9 VGA 640 x 400 70 31.5 VGA 640 x 400 85 37.9 VGA 640 x 480 60 31.5 VGA 640 x 480 72 37.9 VGA 640 x 480 75 37.5 VGA 640 x 480 85 43.3 VGA 720 x 400 70 31.5 VGA 720 x 400 85 37.9 VGA 800 x 600 56 35.2 SVGA 800 x 600 60 37.9 SVGA 800 x 600 72 48.1 SVGA 800 x 600 75 46.9 SVGA 800 x 600 85 53.
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Digital : Chapter 4 Resolution V-Sync(Hz ) H-Sync(KHz ) Compatibility 640 x 350 70 31.5 VGA 640 x 350 85 37.9 VGA 640 x 400 70 31.5 VGA 640 x 400 85 37.9 VGA 640 x 480 60 31.5 VGA 640 x 480 72 37.9 VGA 640 x 480 75 37.5 VGA 640 x 480 85 43.3 VGA 720 x 400 70 31.5 VGA 720 x 400 85 37.9 VGA 800 x 600 56 35.2 SVGA 800 x 600 60 37.9 SVGA 800 x 600 72 48.1 SVGA 800 x 600 75 46.9 SVGA 800 x 600 85 53.7 SVGA 1024 x 768 43 35.
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Function Test Display Pattern Item Test Content 1 Frequency & Tracking 2 Pattern Fine Line Moire Remark Eliminate visual wavy noise. Figure 1 Contrast/BrightneGray Scale ss Gray levels should be distinguishable. Figure 2 3 R, G, B and White R, G, B and Color White Color Performance Each R, G, B color should be normal. Figure 3~6 4 Screen Uniformity & Flicker Full White Should be compliant with the spec.
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B.
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Inspection Procedure N o. Description 1 RESET Please press "Menu" button on the projector panel to enter "Factory Reset" Function then choose "YES" and press "Enter" to see if it works. This action will allow you to erase all end-user's settings and restore the original factory setting. 2 Hi-Pot and Grounding Test - Hi-Pot Specification : 1.5kVAC, 10mA, 2 seconds. - Grounding Specification : 12VDC, 25A, 0.1 ohm.
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N o. 7 Item Check for Secondary Display Modes Description Test signal : - 640*350 @ 70/85Hz - 640*400 @ 70/85Hz - 640*480 @ 72/75/85Hz - 720*400 @ 70/85Hz - 800*600 @ 56/60/72/75/85Hz - 1024*768 @ 43.4/60/70/75/85Hz - 1280*1024 @ 60/75Hz Normally when the primary mode 1024*768 @ 85Hz is well adjusted and complaint with the specification, then the secondary display modes will be great possibility to be complaint with the specification.
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Chapter 5 FRU (Field Replaceable Unit) List This chapter gives you FRU ( Field Replaceable Unit ) listing in global configuration of PD721. Refer to this chapter whenever ordering for parts to repair or for RMA ( Return Merchandise Authorization ). Please note that WHEN ORDERING FRU PARTS, you should check the most up-to-date information available on your regional web or channel. For whatever reasons a part number change is made, it will not be noted on the printed Service Guide.
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FRU List Photo Part Name Description P/N ACCESSORY N/A REMOTE CONTROLLER ACCESSORY REMOTE CONNTROLLER EZPRO 735(NEUTRAL) 25.320VH.001 N/A BAG W/CUSHION INSIDE SOFT CASE SOFT CARRY BAG FOR 47.720VH.014 ACER PD720 N/A PCBA THERMAL SENSOR BOARD PCBA THERMAL SENSOR BD EZPRO 730/735 ID=91 55.310VH.009 N/A PCBA MAIN BOARD ASSY PCBA MAIN BOARD EP755 FOR ACER (PD720) 55.721VH.001 N/A PCBA THERMAL BOARD EZPRO 755/ H55 FOR SUNON PCBA THERMAL BOARD EZPRO 755/ H55 FOR SUNON 55.721VH.
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Photo Part Name Description P/N CABLES N/A Y CABLE MINI DIN 8P TO USB “A” TYPE/DSUB 1.8M Y CABLE MINI DIN 8P TO USB “A” TYPE/DSUB 1.8M CARUSO 50.720VH.001 N/A CABLE W.A 24PIN 2.0P W.A 24PIN 2.0P 324 EZPRO 755 50.720VH.002 IR FRONT CABLE W.A 3P W.A 3P#26 IR FRONT EzPro 755 50.720VH.003 N/A CABLE W.A 4PIN 2.0P W.A 4PIN 2.0P 326 EZPRO 755 50.720VH.004 N/A LVPS-BALLAST POWER W.A 2PIN #20 LVPSCABLE W.A 2PIN BALLAST POWER EZPRO 755 50.720VH.005 IR BACK W.A 3P W.
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Photo Part Name Description P/N N/A ENGINE TO HEAT SINK WIRE 22AWG W.A ENGINE TO HEAT SINK EMI WIRE 22AWG EP757 50.721VH.001 N/A LPP TO VIDEO CABLE 1500MM CABLE RCA 1500MM LPP-VIDEO 50.310VH.006 N/A S-VHS CABLE 2M CABLE S-VHS 2M EZPRO 600 50.310VH.007 N/A VGA CABLE 15P 1.8M 3C+5 BLACK CABLE VGA 15P 1.8M 3C+5 BLACK 50.321VH.005 N/A MINI JACK TO RCA CABLE 1800MM CABLE MINI JACK TO RCA 1800MM 50.721VH.002 N/A DVI TO VGA CABLE 1.8M CABLE DVI(WHITE)TO VGA (BLUE) 1.8M EZPRO 735 50.
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Photo Part Name Description P/N ZOOM RING BASE PC+ABS ZOOM RING BASE PC+ABS EzPro 755 42.720VH.003 FOCUS RING PC+ABS CS-CT52A FOCUS RING PC+ABS CS-CT52A, 53A EP755 FOR ACER 42.720VH.004 FRONT COVER PC+ABS CS-CT52A FRONT COVER PC+ABS CS-CT52A EP755 FOR ACER 42.720VH.005 CONNECTOR COVER CLAMP CONNECTOR COVER CLAMP PC+ABS EZPRO 755 42.720VH.006 SIDE VENT PC+ABS SDIE VENT PC+ABS EzPro 755 42.720VH.007 KEYPAD PC+ABS HIGHT GLOSSY KEYPAD PC+ABS HIGHT GLOSSY EP755 FOR ACER 42.720VH.
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Photo 44 Part Name Description P/N N/A CONNECTOR AV COVER PC+ABS CONNECTOR AV COVER PC+ABS CSCT53A EP755 FOR ACER 42.720VH.011 N/A THERMAL BOARD STAND THERMAL BOARD 42.720VH.012 STAND PC+ABS EZPRO 755 N/A FAN GUIDE FRONT NORYL CS-CT52A FAN GUIDER FRONT NORYL CS-CT52A EP755 FOR ACER 42.721VH.001 SPEAKER HOLDER SECC 1.0t SPEAKER HOLDER SECC 1.0t EzPro 610 42.720VH.013 N/A AXIAL FAN BRACKET AL0.8T AXIAL FAN BRACKET AL0.8T EZPRO 755 33.720VH.001 N/A BALLAST BRACKET SECC 0.
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Photo Part Name Description P/N N/A BACK IR COVER MODULE ASSY BACK IR COVER MODULE EZPRO 755 42.721VH.005 N/A FRINT IR COVER MODULE ASSY FRONT COVER MODULE EZPRO 755 42.721VH.006 N/A LAMP COVER MODULE ASSY LAMP COVER FOR ACER PD721(RMA) 42.721VH.007 N/A BOTTOM HOUSING MODULE ASSY BTM HSG FOR ACER PD721(RMA) 60.721VH.001 TOP HOUSING MODULE ASSY TOP HOUSING MODULE PD720 FOR ACER (RMA) 60.720VH.002 N/A DMD 0.7 INCH XGA 12 DEGREE SDR TYPE A DMD 0.7 INCH XGA 12 DEGREE SDR TYPE A 57.
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Photo N/A Part Name Description P/N LVPS MODULE SUPPORT RUBBER 15*15*5.0T LVPS MODULE SUPPORT RUBBER 15*15*5.0T 47.720VH.005 ZOOM RING SILICONE RUBBER ZOOM RING SILICONE RUBBER EzPro 755 47.720VH.009 N/A SPEAKER RUBBER INSULATOR LEFT SPEAKER RUBBER INSULATOR LEFT EZPRO 755 47.720VH.010 N/A SPEAKER RUBBER INSULATOR RIGHT SPEAKER RUBBER INSULATOR RIGHT EZPRO 755 47.720VH.011 N/A WASHER-ZN CARUSO WASHER-ZN CARUSO 47.720VH.013 N/A LABEL NAMEPLATE AL ACER LABEL NAMEPLATE AL ACER 47.721.
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Photo Part Name Description P/N N/A SCREW PAN MECH M3*4 NI SCREW PAN MECH M3*4 NI 86.320VH.003 N/A SCREW PAN MECH M2*4 BLACK SCREW PAN MECH M2*4 BLACK 86.721VH.006 N/A SCREW PAN MECH M2*5 BLACK SCRWE PAN MECH M2*5 BLACK 86.721VH.007 N/A SCREW PAN MECH M3*12 BLACK SCRWE PAN MECH M3*12 BLACK 86.721VH.008 N/A SCREW CAP MECH M3*6 BLACK SCREW CAP MECH M3*6 BLACK 86.721VH.009 N/A SCREW FLAT MECH M2*3 BLACK NYLOK CARUSO SCREW FLAT MECH M2*3 BLACK NYLOK CARUSO 86.721VH.