Ch6_PL111 SM - Michael Jay Lissner
Contents
1. ViewSonic Corporation i Confidential Do Not Copy PJ402D 1 1 Teserrrsrsseereceesseerececesececereeseereereesorececcesseeoeesecoreseeseeseesececeseone 4 Machine Disassembly and Replacement This section provides disassembly procedures for PD S600 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 accord ing to grouping Tool Needed Long Nose Nipper Hex Sleeves 5mm Screw Bit 107 Screw Bit 101 Screw Bit 102 ViewSonic Corporation Confidential Do Not Copy PJ402D General Information Before You Begin Before proceeding with the disassembly procedure make sure that you do the following 1 Turn off the power to the system and all peripherals 2 Unplug the AC adapter and all power and signal cables from the system 3 Wear Anti static wrist strap ViewSonic Corporation Confidential Do Not Copy PJ402D Disassemble Lamp Module Note Unplug all the cord before disaddembling the Projector Loosen two screws of Lamp Cover Remove Lamp Cover Loosen two screws of Lamp Module Grasp the lamp handle and pull out Lamp Module dl p s Related notice of replace lamp pls refer to the Lamp Specification sec2. Treaz ii n z AL c P163B 157 FJ643 0016 AAA di 02555 1028 01 ri r G PI6SE 156 dels 094 Il PI 634 d d 92960 Pi 24 051 ViewSonic Corporation Confidential Do Not Copy PJ402D 24 5 5 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 Video Signal Troubleshooting 2 Operation Function Troubleshooing 3 Power Source Troubleshooting ViewSonic Corporation Confidential Do Not Copy PJ402D 25 my S S SS SD Video Signal Computer Video No Signal No Signal NG Check Turnon Check gt Turn on Source Source Source Source OK OK Check NG Check NG Replace _ gt Cable Cable Cable Cable OK OK Computer NG NG Change to Mode W Video Mode Input OR OK Change Main Change Main Board Board ViewSonic Corporation Confidential Do Not Copy PJ402D 26 bessaatrtsmnnsssssnsesensetannnsnnnnnnnnenneereanannnnnnnnnnnnnnreennennnnannn n OK Look up user manual and Check LED indication Check Optical Engine follow indica tive action NG e Replace Optical Engine Replace Lamp R
3. 00 Wire 3P IR B 02595 0027 00 Wire 5P BST 02595 0015 00 ja Wire 2P 4P Lamp 02595 0025 00 Wire 2P 380V 02595 0019 00 Wire 12P 10 2P PWR BD 02595 0014 00 Wire 2P AC Socket 02595 0028 00 ViewSonic Corporation x Confidential Do Not Copy PJ402D 48 8 Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST PJ402D 1 ViewSonic Model Number VS10400 1 W Rev la Serial No Prefix PD4 tem Description viewsoncPn Ref PN oe MOQ Accessories AC POWER CORD A 00003061 According to POI PC Board Assembly 5 6 8 CE Cabinets TOP COVER include keystroke back Cables According to POI S VIDEO CABLE CB00000 02547 1007 1 VGA D SUB to HDTV RCA CABLE CB 00003081 According to POI VGA CABLE CB00002 According to POL 1 Hardware S M3 6 D2 BL TC HW 00003099 82035 251 8 1 Miscellaneous ViewSonic Corporation Confidential Do Not Copy PJ402D 49 ViewSonic Corporation CABLE BAG P OUTER CARTON AD E BAG OUCH OOT ASSEMBLY UNCTION KEYSTROKE KEYSTROKE 50 PL 00003115 Es LE LE l aa P J402D Reader s Response Dear Readers Thank you in advance for your feedback on our Service Manual which allows continuous improvement of our products We would appreciate your completion of the Assessment Matrix below for return to ViewSonic Corporation Assessment A What do you think ab
4. 25 35 156 1024 60 317 37 879 1056 H V 800x600 HI VC 1024x768 1152 x 864 67 5 1680 63 981 1688 ViewSonic Corporation Confidential Do Not Copy P J402D ad BEE Function Test Display Pattern 1 Select the 12 squares BMP file to check if there is any 12 squares noises during the stage of Figure 1 turning on and warming up the projector 2 The noises appear on the NOISE ENEEK UD 12 squares square should be less than Figure 1 three squares 3 Select the 800 flicker BMP 800 flicker file Make sure teach word on Figure 2 the projected image doesn not flicker 1 Select the Full Black BMP file to project the image on the Dust check up Full Black el loco oo Figure 3 and ensure there are no stains 1 Select the Full White BMP file to project the image on the HE PING screen Stand 1 8 meters from it H NE and ensure there are no stains 1 Select the black and white word BMP file Use the projector to adjust the projected Resolution check up Black and image to the maximum size Figure 5 White Word and minimum size and make sure each word is distinguishable under both conditions 1 Select the 256RGB BMP file RGB color check up 256RGB to ENEEK EE Edu the image matches the color ladder of the file 1 Select the Full Gray BMP file to project the image on the Figure 7 screen Stand 1 8 meters from it and ensure there are no stains 1 Click on the folder
5. select the Boundary Frame BMP file Bundar press the AUTO button on the y projector check if the lines and Figure 8 up Frame i colors of the projected image are clear as presented on the BMP file ViewSonic Corporation u Confidential Do Not Copy PJ402D 33 LE Full Black Pattern Figure 3 Full White Pattern Figure 4 Black and White Word Pattern Figure 5 256RGB Pattern Figure 6 Gray Pattern Figure 7 Boundary Frame Figure 8 ViewSonic Corporation u Confidential Do Not Copy PJ402D 34 5 6 Connector Information Introduction This section provides each connector location on boards signal and function of each board They will be useful for your detecting the defective boards Main Board Summarize CC O 2 remi gt ViewSonic Corporation Confidential Do Not Copy P J402D Qo CCG BEE The Locations of Connectors CNT CN7 IR 129 51 FAN FB3 GND PWM3 ViewSonic Corporation Confidential Do Not Copy PJ402D 36 5 CN2 Keypad Control GNO GNO SP R SP RT SP R SP R Se EE SF L SP Le SP L keypad PWR keypad Menu Keypad Up keypad Down keypad Lett keypad Right GNO sh D I E I z5 1 I SS Pse ViewSonic Corporation u Confidential Do Not Copy PJ402D 37 5 J2 Thermal AGNO VID LUM COMP v ID CON3 S Video ViewSonic Corporation Conf
6. 02D 44 5 7 FRU Field Replaceable Unit List This chapter gives you FRU Field Replaceable Unit listing in global configuration of S600 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 For Premier AUTHO RIZED SERVICE PROVIDERS Premier 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 Premier office to order FRU parts for repair and service of customer machines NOTE To scrap or to return the defective parts you should follow the local government ordinance or regulations on how to dispose it properly or follow the rules set by your regional Premier office on how to return it ViewSonic Corporation Confidential Do Not Copy PJ402D 45 EE FRU List Back IR Board P1647 5001 Thermal Board P1647 3000 ViewSonic Corporation Confidential Do Not Copy PJ402D 46 5 Foot screw assembly Optical Engine P1643 0020 P1643 0021 FFC cable 02595 0014 00 Wire 4P C W 02595 0017 00 ViewSonic Corporation Confidential Do Not Copy PJ402D 47 5 Wire 3P IR F 02595 0016
7. COLOR 120 MOTOR JB DMD LE POWER AIDA DE 13 57 CONTROL a ayca LENS Oh seal VAL 1 PFC BALLAST Lamp THE ap DTN ViewSonic Corporation Optics Conceptual Drawing P1636 762 Pl 34 201 Light Tunnel Lamp Housing F1646 6100 201 36 400 Lens Assembly Aspherical P1636 771 P1 47 3000 Lens C1 Color Wheel Thermal DCH F1630 762 Mirror ad156 402 Aspherical Lens 2 Fl636 u1 Pi travi n T IL IL T _ NEC E17 5 Lam DMD PCB ri e 2 Riain b P1635 603 i Heatsink DTN ViewSonic Corporation 3 Firmware Upgrade This chapter provides the equipment needed setup and upgrading procedure for Firmware upgrade Setup Tool Equipment 1 Computer 2 USB Cable see right picture 3 Power Coard Upgrading Procedure 1 Connect Download Cable to projector 2 Open burning programma DLP Composer Lite E i EU DLE Compose VO TM Lite L Skip Boot Losder Ama nad ef bui the fra 16 KE Eur mange of loge Data ko ke updated Gm Hex End siti USD vendori El ua rel T me ViewSonic Corporation Confidential Do Not Copy PJ402D 3 Press Power and Menu button together and connect the power cord into the projector han release these 2 bottoms 4 Click the Start Download button and then start to burning of program d L it
8. Service Manual ViewSonic PJ402D Model No VS10400 Portable DLP Projector PJ402D SM Rev 1a June 2005 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Copyright Copyright 2005 by ViewSonic Corporation 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 ViewSonic Corporation Disclaimer ViewSonic makes no representations or warranties either expressed or implied with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes Trademarks Optiquest is a registered trademark of ViewSonic Corporation ViewSonic is a registered trademark of ViewSonic Corporation All other trademarks used within this document are the property of their respective owners Revision History SM Editing Date ECR Number Description of Changes Editor 06 14 05 ci Initial Release N Huang ViewSonic Corporation Confidential Do Not Copy PJ402D TABLE OF CONTENTS 1 Precau
9. eplace Fan OK OK OK C W wire loose or Connect C W gt cable completely OK OK Check Ballast Replace Ballast NG gt NG NG NG NG Check Main Board Replace Main Board ViewSonic Corporation u Confidential Do Not Copy PJ402D 27 a AE Color Missing On Screen Check source and mute function Input the correct Check NG Replace source to Pro gt Cable Cable jector OK Replace cable Check C W Sensor or connect the Cable Connector cable back become loose or not NG Change Main gt Board Top covers cable va Check Speaker Connector Speaker Connector Check Main Board Become loose OK N Change Optical Check Replace Engine Speaker Speaker SRI Check NG keypad Replace keypad S NG Replace Main ViewSonic Corporation u Confidential Do Not Copy PJ402D 28 s a Operation Function Remote Control Failure Check Battery Level OR Check Remote Control OK IR Board or IR cable OK Main Board Fall ViewSonic Corporation Button Failure NG Replace cable or connect the cable back NG gt Replace Battery Top covers cable oK lt gt NG Check Button NG Replace Remote Control Replace Button oK NG Replace IR Check NG gt Board or IR K
10. eypad gt Replace Keypad cable OR Replace Main Board PJ402D I een Power Source No Power Source Fan failure After After Turning On Turning On NG Check gien i NA Fan Connector Power Cord Power Cord Connector Become loose Check Lamp Cover Switch NG WE Replace Inner Wires Replace Fan NG Replace Power Board NG Replace Main Board OK NG ViewSonic Corporation Confidential Do Not Copy PJ402D 30 5 Function Test and Alignment Equipment Needed PC with SVGA resolution Color Video Signal amp Pattern Generator Remote Controller Test Condition Circumstance Brightness Dark room less than 60 lux Inspection Distance 1 8m Screen Size 60 inches diagonal wide Before function test and alignment each PD S600 should be run in and warmed up for at least 5 minutes with following conditions 1 In room temperature 2 With cycled display colors R G B White 3 With cycled display modes 640 x 350 H 31 5 KHz V 70 Hz 640 x 400 H 31 5 KHz V 70 Hz 640 x 480 H 37 5 KHz V 75 Hz 720 x 400 H 31 5 KHz V 70 Hz 800 x 600 H 53 7 KHz V 85 Hz 800 x 600 H 37 9 KHz V 60 Hz 1024 x 768 H 48 4 KHz V 60 Hz 1024 x 768 H 68 7 KHz V 85 Hz 5 Test Display Mode and Pattern ViewSonic Corporation penere PJ402D Test Display Modes and Patterns Compatible Modes H VO 640x800 56
11. idential Do Not Copy PJ402D 38 5 CON1 D_SUB ViewSonic Corporation Confidential Do Not Copy PJ402D 39 5 J9 Power Supply ViewSonic Corporation USB EDAT N USB DATP GND GND GND 40 PJ402D JP4 FirmWare Debug GND GND TM I TOOT OUT STSRSTZ TRSTZ TOI Th S 2 TER FR T U E TOO ICE RST TRACEPETIS TRACEPETIA TRAGEPETTS TRACGEPETT 2 TRACEFET11 TRACEFETIO TRACEPETA TRACEPEKTS TRAGEPET TRAGEPETE TRAGEPETS TRACEPKT4 TRA CEPKT3 TRA CEPKT 2 TRACEFETI TRAGEPETO TRACECLE TRACESYNC PIPESTATO PIPESTATI PIFESTAT 24 3 3v 3 3v 3 3V Fa Pe po Ps wb 2 Pa Sal en an S Sail S UR G OI ViewSonic Corporation Confidential Do Not Copy u P J402D 41 Power Board Summarize CN ZU 350 Output CASO 1 DC Output The Locations of Connectors CN101 AC Inout ViewSonic Corporation u Confidential Do Not Copy PJ402D 42 5 CN201 380V Output CN301 DC Output ViewSonic Corporation Confidential Do Not Copy P J402D Ballast Board Summarize 300 Lamp Signal D IM RX DCC athode LED a CIS yne fl athode LED Common LEO f nodes FLAGITAD Emitter PLA GITA D iColleciori CN2 380V CN3 380V 4 Lamp Output Lamp Output ViewSonic Corporation Confidential Do Not Copy PJ4
12. ion Confidential Do Not Copy PJ402D 2 4 Temperature Lamp burner Mo foil back lt 350 degree C Lamp burner Mo wire lt 350 degree C Lamp burner Mo foil front lt 350 degree C Burner bulb top temperature 860 degree C 960 degree C measured with pyrometer Validation of max permissible temperatures by reference thermocouple measurement based on a referece lamp housing 2 5 Rise time Rise time to 80 of the stabilized luminous output is lt 90 sec Extensive cooling of the bulb during lamp run up phase has to be avoided 2 6 Hot restrike If the unit has been off for more than 60 sec the lamp must restrike Ignition voltage 5kV 3kV 2 7 Light output Ballast type Test conditions on electronic power supply OSRAM PT VIP 3 AC 380 03 stable at 200W Stabilization time 5 min Luminous flux initial values typ 6300 Im A 5 0 x 3 8 mm rect aperture min 5800 Im 5 0 x 3 8 mm rect aperture Color coordinates typ x 0 290 0 020 typ y 0 290 0 020 ViewSonic Corporation Confidential Do Not Copy PJ402D 2 8 Lamp drawing a a ULT 1 P 2 9 Instructions for use 1 The lamp becomes high temperature after turning off the projector with the power button If you touch the lamp you may scald your finger When you replace the lamp wait for at least 45 minutes for the lamp to cool down 2 Do not touch the lamp glass at any time The lamp may explode due to improper handling inc
13. luding the touching of the lamp glass 3 Lamp lifetime may differ from lamp to lamp and according to the environment of use There is no guarantee of the same lifetime for each lamp Some lamps may fail or terminate their lifetime in a shorter period of time than other similar lamps 4 Alamp may explode as a result of vibration shock or degradation as a result of hours of use as its lifetime draws to an end Risk of explosion may differ according to the environment or conditions in which the projector and lamp are being used 5 Wear protective gloves and eyeglasses when fixing or detaching the lamp 6 Faster on off cycles will damage the lamp and reduce lamp life Wait at least for 5 minutes to turn off the projector after powering on 7 Do not operate the lamp in proximity to paper cloth or other combustible material nor cover it with such materials Otherwise it could cause a fire ViewSonic Corporation Confidential Do Not Copy PJ402D 8 Do not operate the lamp in an atmosphere containing an inflammable substance such as thinner Otherwise it could cause a fire or explosion 9 Thoroughly ventilate the area or the room when operating the lamp in an oxygen atmosphere in the air If ozone is inhaled it could cause headaches nausea dizziness etc 10 The inorganic mercury is involved in the lamp If the lamp bursts the mercury inside the lamp will go out of the projector Leave the area immediately if the lamp shatter
14. ngine go down due to the heavy machine 01635 401 4 P1643 0002 P1635 600 mere GI Kr N NE P1638 102 oes RA RSS 22 Unscrew three screws than remove the fan P1643 0020 ViewSonic Corporation o Confidential Do Not Copy PJ402D 20 bessaatiresnnnnsnsnssesensetannnsnnnnnnnenneereanantnnnnnnnnnnnnreennernnnannn nn Disassemble Power Outlet Set 1 Remove the screw from the bottom of power wires and unplug the connector 2 Then lift up the power outlet set 12595 0028 00 A x ns U ViewSonic Corporation u Confidential Do Not Copy PJ402D 21 s a Disassemble Power Board 1 Unplug all the wires on the board Power Board PIN location of connectors pls refer to Chapter 5 2 Unscrew five screws on Power Board 3 Then remove Power Board 01655 3561 5 ViewSonic Corporation u Confidential Do Not Copy PJ402D 22 5 Disassemble Foot Screw Assembly 1 Push buttom let foot screw assembly fall off 2 Use nipper or tweezers carfully to press the head of foot screw 3 Then foot screw assembly drop out by itself P1643 0017 YA P1634 464 09 7 82134 465 _ Qi 82135 351 82134 464 99 P1634 466 ViewSonic Corporation Confidential Do Not Copy PJ402D e Exploded overview Ballast exploded overview Fl643 000 a O1630 0 35 H ae A NE39 BTT FE A BE EES Zi Video Boor U HEISE pje34 465 S9 ara BU PIGSS 451 99 MT i ol
15. out the content of this Service Manual Unit 1 Precautions and Safety Notices 2 System Introduction 3 Firmware Update 5 Troubleshooting 6 Connector Information 7 FRU Field Replaceable Unit List 8 Recommended Spare Parts List B Are you satisfied with this Service Manual 2 Service Manual Layout 3 The form and listing JL C Do you have any other opinions or suggestions regarding this service manual Reader s basic data Company Add E mail After completing this form please return it to ViewSonic Quality Assurance in the USA at facsimile 1 909 839 7943 You may also e mail any suggestions to the Director Quality Systems 8 Processes marc maupin viewsonic com ViewSonic Corporation u Confidential Do Not Copy PJ402D 51 5
16. s while being operated and ventilate the area for at least 30 minutes in order to avoid the inhalation of mercury fumes Otherwise it could be harmful to user s health 11 Dispose of the used lamp according to local regulations 12 Ensure that screws are tightened properly Screws not tightened fully may result in injury or accidents 13 Since the lamp is made of glass do not drop the unit and do not scratch the glass 14 Do not reuse the old lamp This could cause the lamp to explode 15 Be sure to turn off the projector and unplug the AC power cord before replacing the lamp 16 Do not use the projector with the lamp cover removed Disposal For disposal of spent lamps always consult federal state local and provincial hazardous waste disposal rules and regulations to ensure proper disposal Caution This lamp emits ultra violet UV radiation and operates at high pressure This lamp may only be used in enclosed fixtures that comply with UL1572 Due to the high luminous efficacy the UV radiation which the lamp emits and the high pressure within the lamp P VIP lamps may only be operated within enclosed purpose built housings ViewSonic Corporation Confidential Do Not Copy PJ402D System Block Diagram COMPOSITE z VIDEO DECORDER L dL s _ a ADO A DIEZOUO RESET IC TAO 17 CONTROL E AUDIO d AMPLIFIER LCN DISPLAY SPEAEER DRIVER TMA GE d TAU STET d 5V AG SUS
17. tio 1500 1 Full on off Resolution Pixels 800 x 600 480 000 dot x 1 Uniformity 80 typical Optical Compensation Light Tunnel Focal Length 20 2 24 2 mm Screen Size 30 200 inches Throw Distance 1 2 10 Meter Projection Type Front Rear Ceiling Compatibility Horizontal frequency 31 79KHz Vertical frequency 50 85HZ Pixel Rate 108 MHz Keystone Correction Vertical 15 Audio System OW x 1 ViewSonic Corporation Confidential Do Not Copy u P J402D TA ViewSonic Corporation Confidential Do Not Copy PJ402D Lamp Specification 1 Product Scope The product is a lamp system consisting of a short arc burner within a reflector and an electric lamp driver Lamp type P VIP 200 1 0 E 17 5 identcode A390 425 0004 Driver type PT VIP 3AC 380 03 identcode A392 891 0027 2 Product Specifications P VIP 200 1 0 E 17 5 lamp 2 1 Dimensions and weight Lamp see lamp drawing Reflector type elliptical Cable and connector on request Lamp weight lt 0g 2 2 Marking on the lamp Position of marking On ceramic cap on the backside of reflector Manufacturer OSRAM Type no P VIP 200 1 0 E 17 5 Country of origin Germany 2 3 Operating and measurement conditions Ballast type Test conditions stable at 200W with OSRAM PT VIP 3 AC 380 O3 ballast Rated lamp wattage 200W Burner position 0 degree to 20 degree 0 degree optical axis horizontal Burning position horizontal ViewSonic Corporat
18. tion 01635 366 2 P 1643 0015 Lamp Cover Assembly P16453 0014 Lamp Assembly ViewSonic Corporation Confidential Do Not Copy PJ402D Disassemble FroS Top Cover 1 Turn over the Projector 2 Remove four 4 screws of bottom cover 3 Remove the front cover set O1635 C98 N 24 s 2 P1634 452 99 P1634 461 09 1 Remove the 4 screws of back cover 2 Life up top cover directly Be careful there is a internal wire connect with the main board F 1643 0003 01635 E77 U1625 LoeN 2 ViewSonic Corporation Confidential Do Not Copy PJ402D Disassemble Key Pad Speaker amp Front IR Board 1 Remove the all screws of top cover 2 Life up all components include key pad speaker front IR board 02595 0014 00 a 01635 361 7 EG A D 0 I lt KY og za e D e PA Se e E E 4 S 000 0 0 9 AUS AO 6000 9 0 I NOR ns D 09 0 99 0 e E EE a o H 9 Disassemble Front Fan 1 Then life up the fan set directly P1643 0021 ViewSonic Corporation Confidential Do Not Copy PJ402D 16 5 Disassemble Main Board 1 Remove the fi
19. tions and Safety Notices 1 2 System Introduction 2 3 Firmware Update 10 4 Machine Disassembly and Replacement 12 5 Troubleshooting 25 6 Connector Information 35 7 FRU Field Replaceable Unit List 45 8 Recommended Spare Parts List 49 ViewSonic Corporation Confidential Do Not Copy PJ402D 1 Precautions and Safety Notices When replacing the lamp use care to avoid burns to your fingers The lamp becomes very hot during operation 2 Never touch the lamp with your fingers as body oll transferred to the lamp can damage the lamp s useful life 3 Never drop the lamp or jar it in any manner This may cause the lamp to burst 4 This projector is provided with a high voltage circuit for the lamp Do not touch any electric part or component after the projector has been turned on and is operating Doing so could induce a severe shock causing injury or death 5 Do not touch the exhaust fan nor block its air flow during operation as the fan 15 hot 6 The LCD module assembly can be easily damaged during service If replacing the LCD Lens Prism assembly do not hold the FPC of the LCD module assembly 7 Use only the cables which are included with the projector or are specified in this manual ViewSonic Corporation Confidential Do Not Copy PJ402D 2 System Introduction Technical Specification Display Type Single Panel 0 55 DLP Projector Lamp Type NUP 200W Brightness 1500 Lumen typical Contrast Ra
20. ve screws of main board 2 Unplug all wires on the board Main Board PIN location of connectors pls refer to Chapter 5 3 Remove the Main Board 01655 3566 4 Plo 740001 ViewSonic Corporation u Confidential Do Not Copy PJ402D 17 Disassemble IO Cover and Video Baord 1 Unscrew two screws of the IO cover 2 Separate all parts individually P1647 0001 20135 251 P P1635 451 99 ViewSonic Corporation Confidential Do Not Copy PJ402D Disassemble Ballast Module Unplug all wires on Ballast Module Ballast Board PIN location of connectors pls refer to Chapter 5 1 Unscrew four screws on Ballast Module Remove the Ballast Module 2 3 01635 361 2 01635 366 2 Unscrew than life up the IR board 01635 A44 N 4 G P1647 9000 P1638 152 P1635 055 19 ViewSonic Corporation Disassemble Optical Engine 1 Unplug the wire inside 2 Unscrew four screws on Optical Engine 3 Then remove the Engine Module 4 Be careful dont let the E
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