Ricoh PJ LW3000ST Field Service Manual Download Page 84 | Manualshive

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Factory Reset

Factory Reset allows you to erase all OSD menu settings and restore the default setting (except the
service mode).
There are two ways to do Factory Reset. Either way, the settings to be reset are the same.
After replacing the main board, Factory Reset must be done.
Also, after testing or checking the projector, OSD menu settings must be reset to factory default.

Factory Reset Procedure (OSD menu)

1.

Press the [Menu] key to enter the OSD menu.

2.

Select [Setting] -> [Reset].

3.

Select "Yes", and then press the [Enter] key.

Factory Reset Procedure (Service Mode)

1.

Enter the service mode. (

4. Adjustment

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Summary of Contents for PJ LW3000ST

Page 1: ...Furud PJ1 RICOH PJ XL4540 Y0A4 RICOH PJ WXL4540 Y0A5 RICOH PJ LX3000ST Y0A6 RICOH PJ LW3000ST Y0A7 Field Service Manual December 2015...

Page 2: ......

Page 3: ...rified or mechanically driven components To prevent a fire or explosion keep the machine away from flammable liquids gases and aerosols Health safety conditions This machine which uses a high voltage...

Page 4: ...re to laser radiation Safety Labels of This Machine 1 Do not block the air intake or exhaust Doing so could cause a fire due to internal overheating Do not place your hands face or other objects near...

Page 5: ...21 CFR 1040 10 and 1040 11 except for deviations pursuant to Laser Notice No 50 dated June 24 2007 For USA IEC 60825 1 2014 CLASS 1 LASER PRODUCT RISK GROUP 1 For EU countries and Japan and China Lig...

Page 6: ...This projector has built in laser module Possibly hazardous optical radiation emitted from this product Do not stare into the beam May be harmful to the eyes 4...

Page 7: ...and PowerBook are trademarks of Apple Inc registered in the U S and other countries Microsoft Windows Windows Vista Internet Explorer and PowerPoint are either a registered trademark or trademark of...

Page 8: ...e specification 3 Symbols Abbreviations and Trademarks 5 Trademarks 5 1 Product Information Overview 11 Main Unit 11 Control Panel 13 Connection Ports 14 Remote Control 15 Specifications 17 Product Hi...

Page 9: ...ver 46 Right Cover 46 Keypad Board Keypad Buttons 47 Main Board 48 Connection List 51 IO Board Audio Board 52 Fan 1 Fan 2 and Fan 3 53 Notes on Installation 55 LD Driver Board 56 Speaker 57 Interlock...

Page 10: ...ng LED Indicators 85 Troubleshooting 87 Test and Inspection 91 Test Equipment Needed 91 Recommended Test Condition 91 VGA Port Test 92 Audio Performance Test 93 Video Performance Test 94 HDMI Performa...

Page 11: ...Update 112 EDID Introduction 112 Procedure 113 Setup Procedure VGA HDMI 113 EDID Key In Procedure 114 7 Detailed Description Laser 121 Characteristics of Laser Light Source Projector 121 Classificatio...

Page 12: ...10...

Page 13: ...1 Product Information Overview Main Unit 1 Control Panel 2 Focusing Ring 3 Ventilation inlet 4 IR Receiver 5 Ventilation outlet 11...

Page 14: ...6 Speaker 7 Power Socket 8 Input Output Connections 9 Lens 1 Product Information 12...

Page 15: ...dicator of the projector temperature status See page 85 LED Indicators 4 Light LED Refer to the LED indicator of the projector light source status See page 85 LED Indicators 5 Menu Press MENU to launc...

Page 16: ...Video Input HDTV YPbPr 2 HDMI2 Input Connector 3 HDMI1 Input Connector 4 Service 5 Power Socket 6 KensingtonTM Lock Port 7 Microphone Input Connector 8 Audio Input 1 Connector 3 5mm mini jack 9 Audio...

Page 17: ...preset picture mode 3 Input Select the input source 4 AV Mute Momentarily turn off on the audio and video 5 Four Directional Select Keys Select items or make adjustments to your selection 6 Auto Set A...

Page 18: ...en image 11 Menu Press Menu to launch the on screen display OSD or go back to the previous menu 12 Enter Select or confirms settings 13 Keystone Adjust the image to compensate for distortion caused by...

Page 19: ...Power 210W ECO mode 330W Full mode Weight 5 5kg 12 2lb Dimensions WxHxD 383 x 85 x 308 mm Environmental Considerations Operational Temperatures 41 to 104 F 5 to 40 C 20 to 80 humidity non condensing S...

Page 20: ...Video In terminal RCA Jack for Composite Video Input Audio In terminal Two RCA audio jacks for audio input 3 5 mm diameter mini jack for COMPUTER Audio In Microphone 3 5 mm diameter mini jack for Micr...

Page 21: ...h 3 5W 50 survival rate Pulse duration 1 08ms Lens PJ XL4540 PJ LX3000ST PJ WXL4540 PJ LW3000ST F Stop F 2 8 F 2 7 Focus Length 7 15 7 51 Zoom Range Fixed Fixed Projection Image Size 60 to 100 70 to 1...

Page 22: ...00 56 35 1 800 x 600 60 37 9 800 x 600 72 48 1 800 x 600 75 46 9 800 x 600 85 53 7 800 x 600 120 77 4 Apple MAC II 832 x 624 75 49 1 XGA 1024 x 768 60 48 4 1024 x 768 70 56 5 1024 x 768 75 60 0 1024 x...

Page 23: ...68 60 47 7 1440x900 60 59 9 WSXGA 1680x1050 60 65 3 c Component signal Mode Resolution V Frequency Hz H Frequency Hz 480i 720x480 1440x480 59 94 29 97 15 7 576i 720x576 1440x576 50 25 15 6 480p 720x48...

Page 24: ...9 IBM 720 x 400 70 31 5 SVGA 800 x 600 56 35 1 800 x 600 60 37 9 800 x 600 72 48 1 800 x 600 75 46 9 800 x 600 85 53 7 800 x 600 120 77 4 Apple MAC II 832 x 624 75 49 1 XGA 1024 x 768 60 48 4 1024 x 7...

Page 25: ...WXGA 1280x720 60 44 8 1280x800 60 49 6 1366x768 60 47 7 1440x900 60 59 9 WSXGA 1680x1050 60 65 3 c Video signal Mode Resolution V Frequency Hz H Frequency Hz 480p 640x480 59 94 60 31 5 480i 720x480 14...

Page 26: ...56 3 d HDMI 1 4a mandatory 3D timing Video Signal Mode Resolution V Frequency Hz H Frequency Hz Frame Packing 720p 50 31 5 720p 59 94 60 15 7 1080p 23 98 24 15 6 Side by Side Half 1080i 50 31 5 1080i...

Page 27: ...2 500 ft for 5 C to 40 C 2 500 to 5 000 ft for 5 C to 35 C 5 000 to 10 000 ft for 5 C to 30 C Humidity Storage 20 to 80 Operating 20 to 80 Power supply 100 to 240VAC 10 50 to 60Hz Auto ranging and pow...

Page 28: ...Machine Dimensions 1 Product Information 26...

Page 29: ...this projector up About the handling of this machine follow the contents with reference to Safety Information in the user manual Accessory Check No Description Q ty 1 Projector Lens is included 1 2 Re...

Page 30: ...0 seconds for the projector to cool down Do not use the lens cap when the projector is in operation Do not look into or point the laser pointer on your remote control into your or someone s eyes Laser...

Page 31: ...temperature is within 5 C to 40 C 41 F to 104 F Relative humidity is 20 to 80 In areas susceptible to excessive dust and dirt Near any appliance generating a strong magnetic field In direct sunlight...

Page 32: ...2 Installation 30...

Page 33: ...l engine and other service parts For details about what engineers should do see page 72 Required Action after Replacing Parts 1 PC or Laptop with terminal emulator software which is required for colle...

Page 34: ...Equipment Needed 1 Screw bit 105 2 Screw bit 107 3 Screw bit 107 4 Hex sleeves 5 mm 5 Needle nose pliers 6 Tweezers 7 Projector 3 Replacement 32...

Page 35: ...List Service Parts List No Items Image Reference 1 Optical Engine with Focus Lever page 63 2 Engine Unit page 65 3 Filter Wheel page 65 4 Combiner Unit page 65 5 Sheet for Heat Sink page 53 Parts Lis...

Page 36: ...ge 57 7 Bottom Cover page 70 8 Top Cover with Sponge page 41 9 IO Cover page 44 10 Left Cover page 46 11 Right Cover page 46 12 Large Dust Filter Holder page 39 13 Large Dust Filter page 39 14 Small D...

Page 37: ...rence 15 Small Dust Filter page 39 16 Adjustable Foot page 69 17 Fan 1 2 and 3 page 53 18 DMD Fan page 63 19 Rubber Vibration Isolator page 53 20 Interlock Switch page 57 21 Interlock Switch Holder pa...

Page 38: ...Sensor page 62 23 Speaker with Rubber page 57 24 Front Cover page 45 25 PSU page 57 26 Harness PSU to Main Board page 57 27 Harness Laser Bank to LD Driver Board page 63 28 Power Socket page 67 29 LD...

Page 39: ...rence 30 Harness LD Driver Board to Main Board page 56 31 Keypad Board page 47 32 Keypad page 47 33 Keypad Enter page 47 34 IO Board page 52 35 Audio Board page 52 36 Harness PSU to LD Driver Board pa...

Page 40: ...No Items Image Reference 37 Harness Main Board To IO Board page 52 38 FFC Main Board to Key Pad Board page 47 39 Main Board page 48 3 Replacement 38...

Page 41: ...ile any of the exterior covers are open Even if the purpose of the adjustment or confirming electrification do not turn the main power ON holding down the safety interlock switch Dust Filters When the...

Page 42: ...1 Remove the Small Dust Filter Holder A and Large Dust Filter Holder B 2 Pull out the filter A and B from the holders Exterior Covers Location of screws 3 Replacement 40...

Page 43: ...Top Cover 1 Remove 8 screws on left and right side x8 Part Replacement 41...

Page 44: ...2 Remove 3 screws on the IO cover x3 3 Turn the projector upside down then remove screw x1 3 Replacement 42...

Page 45: ...4 Open the top cover A and then disconnect the FFC x1 5 Top Cover A There are five hooks on upper of front cover Be careful not to break the books when removing the front cover Part Replacement 43...

Page 46: ...IO Cover 1 Top Cover page 41 2 Remove screw on the upper side x1 3 Remove 5 screws yellow circles and 6 hex screws red circles on the back side x11 and then remove the IO cover A 3 Replacement 44...

Page 47: ...Front Cover 1 Top Cover page 41 2 Remove 3 screws on Front Cover A x3 3 Interlock Switch holder A x2 and IR Sensor B 2 hooks Part Replacement 45...

Page 48: ...Left Cover 1 Top Cover page 41 2 Left Cover A x4 Right Cover 1 Top Cover page 41 3 Replacement 46...

Page 49: ...2 Right Cover A flat screws x 3 Keypad Board Keypad Buttons 1 Top Cover page 41 2 Keypad Board A x4 3 Separate keypad module into Keypad Board A and Keypad buttons B Part Replacement 47...

Page 50: ...C A from Main Board to Keypad Board x1 Main Board 1 Top Cover page 41 2 IO Cover page 44 3 Top Shielding A x8 Make sure not to forget to peel off the black sheet A before removing the top shielding 3...

Page 51: ...4 IO Shielding A x3 5 Main Board A with bracket x4 all connectors Part Replacement 49...

Page 52: ...6 There is a connector A at the back side of the main board Pull the main board upward and then disconnect it x1 7 Separate the bracket A and Main Board B x2 3 Replacement 50...

Page 53: ...X to Photo Sensor for Filter Wheel Compose of Red Black White Wire 3 pin C F W to Filter Wheel FFC cable D P W INDEX to Photo Sensor for Phosphor Wheel Compose of Red Black White Wire 3 pin E P W to P...

Page 54: ...Wire 2 pin H LD IF To LD Driver Board FFC cable I DMD FAN Compose of Red Blue Black Wire 3 pin J Sys FAN Compose of Red Yellow Black Wire 3 pin IO Board Audio Board The IO Board and Audio Board are at...

Page 55: ...1 Separate IO Board and Audio Board from Main Board x2 x2 2 Audio Board A x2 3 IO Board B x2 Fan 1 Fan 2 and Fan 3 1 Top Cover page 41 Part Replacement 53...

Page 56: ...2 Disconnect the SYS FAN1 2 and 3 Connector on Main Board x3 3 Peel off the black sheet for heat sink A 4 Remove the Fan 1 Fan 2 and Fan 3 3 Replacement 54...

Page 57: ...Notes on Installation Attach the fans so that the marking comes to the position shown in the following figure Attach the Rubber Vibration Isolator A to the bottom cover guide as shown in the followin...

Page 58: ...LD Driver Board 1 Top Cover page 41 2 Bracket A x5 3 LD Driver Board A x3 3 Replacement 56...

Page 59: ...ver page 41 2 Remove the ground wire screw and disconnect SPK connector on Main Board A Speaker 3 Speaker A Interlock Switch PSU 1 Top Cover page 41 2 Front Cover page 45 3 LD Driver Board page 56 Par...

Page 60: ...4 Bracket for PSU A x4 5 Disconnect the Interlock Switch connector A on the PSU x1 6 Remove the Interlock Switch A 3 Replacement 58...

Page 61: ...7 Remove the black tape A of Interlock Switch 8 Separate the Interlock Switch A and Holder B 2 hooks 9 PSU A x4 x1 3 hex screws 1 round screw Part Replacement 59...

Page 62: ...When removing the PSU put the sheet A out of the way so that the parts on the PSU board are not caught by the sheet Be careful not to scratch the lens A surface 3 Replacement 60...

Page 63: ...10 2 harnesses x2 11 Sheet for PSU A Part Replacement 61...

Page 64: ...oo large to pass through between PSU B and harness guide So first you have to remove PSU 1 Top Cover page 41 2 Disconnect the F IR connector on Main Board x1 3 Front Cover page 45 4 LD Driver Board pa...

Page 65: ...uide three red circles as shown on bottom cover Optical Engine DMD Fan Optical Engine A is comprised of the following parts 1 Engine Unit Lens Module DMD Module DMD Chip DMD Board 2 Combiner Unit Heat...

Page 66: ...1 IO Cover page 44 IO Cover 2 Main Board IO Board Audio Board page 48 page 52 3 Optical Engine A x6 x2 3 Replacement 64...

Page 67: ...4 Sponge seal A 5 DMD Fan with bracket A x2 6 Separate the DMD Fan A and Bracket B Engine Unit Filter Wheel Combiner Unit 1 Optical Engine A page 63 Part Replacement 65...

Page 68: ...2 Filter Wheel Cover B x2 3 Filter Wheel A x2 3 Replacement 66...

Page 69: ...black line appears If the FFC is loose inside the cover it might come into contact with the filter wheel causing an error Power Socket 1 Exterior Covers page 40 2 Main Board page 48 3 IO Board Audio B...

Page 70: ...9 Bottom Shielding A x8 10 Socket with bracket A x2 3 Replacement 68...

Page 71: ...Power Socket B Adjustable Foot There are three adjustable feet there are 1 on the front and 2 on the rear 1 Rotate the adjustable foot A counterclockwise and remove it No nut attached on the bolt so t...

Page 72: ...s on Bottom Cover Refer to the procedures of the relevant service parts page 31 Replacement 2 Adjustable Foot page 69 3 Cover for an Opening Area of Bottom Surface A x2 4 Rubber for an Opening Area of...

Page 73: ...5 Theft Protection Hook A x2 6 Remove the Suspension Bracket A x2 Part Replacement 71...

Page 74: ...tion after repair Changed parts Reference Main Board Combiner Unit Filter Wheel Engine Unit Firmware Update 1 page 97 Wheel Index Adjustment page 76 Factory Reset page 82 EDID page 112 Re write LD Hou...

Page 75: ...ervice Mode 1 Turn on the projector 2 Press the Power 1 key and then press the Left 2 Right 3 and Menu 4 keys sequentially to enter the service mode You can enter the service mode by using the remote...

Page 76: ...is to execute the ADC calibration of VGA IN1 Source from VGA IN1 Port VGA 2 ADC Calibration Use this to execute the ADC calibration of VGA IN2 Source from VGA IN2 Port SNID Read Display the Serial Num...

Page 77: ...o display the detailed value of LD calibration Wheel Index DISPLAY MODE Use this to select the display mode for wheel index adjustment BRIGHT PRESENTATION MOVIE sRGB DEBUG P Wheel Index Phosphor Wheel...

Page 78: ...r unit filter wheel or engine unit the Wheel Index Adjustment should be done Environment Test pattern Full Color Pattern A 64 gray RGBW B 1 Connect the projector to PC with HDMI or VGA cable and then...

Page 79: ...ct and satisfactory Both P Wheel Index and F Index are well adjusted Inspection item Check if each color level is correct Color saturation Criteria Screen appears satisfactory There should be no unusu...

Page 80: ...4 Adjustment 78...

Page 81: ...ge 73 2 Select LD Fail and then press Enter key 3 Select the setting item that you want to change hours Full Usage time when Laser Power Mode is set to Normal ECO Usage time when Laser Power Mode is s...

Page 82: ...ire ADC calibration Environment Test equipment PC support HDTV resolution Test signal 1024x768 60Hz For RICOH PJXL4540 LX3000ST 1280x800 60Hz For RICOH PJ WXL4540 LW3000ST Test pattern 94 White up 6 B...

Page 83: ...VGA2 in port A 5 Select VGA 2 ADC Calibration When calibration is completed OK appears on the screen Criteria If there is noise on the screen the product is considered as failure product There should...

Page 84: ...set are the same After replacing the main board Factory Reset must be done Also after testing or checking the projector OSD menu settings must be reset to factory default Factory Reset Procedure OSD m...

Page 85: ...2 Select Factory Reset and then press the Enter key 3 Select Yes and then press the Enter key Factory Reset 83...

Page 86: ...4 Adjustment 84...

Page 87: ...LIGHT LED Message Power LED TEMP LED LIGHT LED Red or Blue Red Red Standby Input power cord Red Normal Power on Blue Powering up Warming up Flashing Red 1 0sec Power off Cooling Down Flashing Red 0 5s...

Page 88: ...ght source failed On Standby Error Fan failed On Event Flashing 3sec Error Fan failed On Standby Flashing 3sec Error Filter Wheel fail Striking Light source Fail On Event Flashing 0 5sec Error Filter...

Page 89: ...Solution procedure 1 No Power 1 Ensure the Power Cord and AC Power Outlet are securely connected 2 Make sure that Keypad Board is not defective 3 Ensure all connectors are securely connected and are n...

Page 90: ...Board 4 No Image 1 Ensure the Signal Cable and Source device is work properly 2 Ensure all connectors are securely connected and are not broken 3 Check the Main Board 4 Check the Combiner Module 5 Ch...

Page 91: ...to Sensor and Filter Wheel 10 Dead Pixel Dust Out of spec 1 Ensure the projection screen without dirt 2 Ensure the projection lens is clean 3 Check the Optical Engine 11 Garbage Image 1 Ensure that th...

Page 92: ...ll 2 Ensure the projector is not in Mute mode 3 Check the Main Board 4 Check the Speaker 15 3D Image Unusual 1 Ensure the using 3D glasses is good 2 Ensure the signal source is 3D format 3 Ensure the...

Page 93: ...Condition Ambient brightness Dark room less than 2 lux Product must be warmed up for 3 minutes Screen size 77 diagonal for PJ LPJ XL4540 and PJ LX3000ST 87 2 diagonal for PJ WXL4540 and PJ LW3000ST Zo...

Page 94: ...1 4 visible light blemishes are allowed in the active area Zone A Zone B 2 No blemish will be 1 5 3 81cm long diameter 3 Eyecatchers Border Artifacts Black The eyecatcher and lines are allowed 4 Proje...

Page 95: ...facts Black The eyecatcher and lines are allowed 4 Projected Images 1 Any screen 2 Gray 10 3 Any screen 4 Gray 10 5 White 6 Any screen 7 Black or White 1 No adjacent pixels 2 No bright pixels in Activ...

Page 96: ...creen Check the sound from speaker HDMI Performance Test Test equipment DVD Player with HDMI output Test signal 720p 1080p 1080i Criteria Ensure the image is well performed Check whether mute is worki...

Page 97: ...ria Check whether sound and video is satisfactory Check points Check item Check point Firmware version All firmware version must be the latest version Exterior covers The exterior covers are not broke...

Page 98: ...5 Troubleshooting 96...

Page 99: ...Parameters Download DLP Composer Lite and HD26FlashDeviceParameters from website that provides the relevant tools for maintenance Hardware 1 Projector 2 Power cord 3 USB Cable mini USB to USB A 4 PC L...

Page 100: ...2 Click Next 3 Read License Agreement and then choose I accept and agree to be bound by all the terms and conditions of this License Agreement and click Next 6 Firmware Update 98...

Page 101: ...4 Click Next 5 Click Next 6 Click Next System Firmware Update 99...

Page 102: ...program is executing installing status 7 Click Finish Get into firmware download mode Set up the following procedure 1 While holding down the Enter key then plug in the power cord 6 Firmware Update 1...

Page 103: ...LED lights pink and the Lamp and Temp LEDs light red then release the Enter key as shown in the photo below USB driver update procedure 1 Execute Install DLP Device Drivers in the start menu System Fi...

Page 104: ...2 Select Jungo WinDriver WinVista Win7 then click install If OS is 64bit select Microsoft WinUSB 3 Click Next 6 Firmware Update 102...

Page 105: ...e projector to the PC 1 Enter the firmware download mode page 100 2 Connect the Projector and PC with a mini USB cable The Found New Hardware Wizard appears 3 Select No not this time then click Next S...

Page 106: ...Install the software automatically Recommended then click Next 5 Click Finish Firmware update procedure 1 Execute the DLP ComposerTM Lite file 2 Select the file V1FlashDeviceParameters 6 Firmware Upd...

Page 107: ...3 Put V1FlashDeviceParameters file into the folder where you setup DLP Composer Lite 4 Click Edit and Preferences System Firmware Update 105...

Page 108: ...5 Click Communications and select USB then click OK 6 Choose Flash Loader and click Browse to search the firmware file img and click Open 6 Firmware Update 106...

Page 109: ...rase the flash memory 8 If the firmware is ready click Start Download to execute the firmware update 9 Click Yes to erase the flash memory It takes about several minutes the firmware update process is...

Page 110: ...e USB cable and power cord Check system firmware version 1 Re plug in the power cord and then restart the projector 2 Get into the Service Mode page 73 3 Check the system firmware version A 6 Firmware...

Page 111: ...or Power cord Female to female RS232 Cable PC or Laptop 1 Plug in the power cord connect the projector to PC with RS232 cable 2 Execute the NuvoISP exe firmware upgrade tool from NuMicro ISP Programmi...

Page 112: ...4 Click the File and then select Load Project 5 Select the firmware file and then click open 6 Click Start 6 Firmware Update 110...

Page 113: ...7 After the PASS appeared close the window 8 Check if the MCU firmware A is updated on Service Mode MCU Firmware Update 111...

Page 114: ...the system through a Display Data Channel DDC which sites between the display device and the PC graphics adapter The system uses this information for configuration purposes so the monitor and system c...

Page 115: ...xture Board A to COM Port of PC Laptop with RS232 cable 2 Connect P3 P4 of Fixture Board to VGA in port of projector with VGA cable 3 Connect P5 of Fixture Board to HDMI1 port of projector with HDMI t...

Page 116: ...ey In Procedure 1 Execute EDID Program 1 Click EDID to execute EDID program 2 Process 1 Select the COM Port which you are using 2 Click Model 3 Select the source file ini 4 Click Open 6 Firmware Updat...

Page 117: ...5 Enter the Serial Number next to Unit No 6 In Write Source Select select VGA1 and HDMI1 7 Click Program 8 Click OK EDID Update 115...

Page 118: ...9 Click OK 10 Click OK 6 Firmware Update 116...

Page 119: ...11 Connect P5 of Fixture Board to HDMI port 2 of projector with HDMI to DVI cable and then click OK EDID Update 117...

Page 120: ...een 4 Read EDID VGA information In the Read select Analog and Trans and then click Read EDID information will show the result 5 Read EDID HDMI information In the Read select Digital and Trans and then...

Page 121: ...EDID Update 119...

Page 122: ...6 Firmware Update 120...

Page 123: ...aws and regulations in different countries Class definition of laser equipment Compliance with Ricoh regulations 3 Ensuring safety and education of service representatives Classification According to...

Page 124: ...e Smallest Etendue Smaller optics High laser costs This is the amount of light collected into the display device such as a DMD or LCD The smaller the value is the smaller size you can achieve Optical...

Page 125: ...w light Red yellow green and blue lights reach the DMD F Afocal lens without convergence transmits light signal to a distant point as a parallel light A Afocal lens B Dichroic mirror C Blue wraparound...

Page 126: ...er wheel D and phosphor wheel E Phosphor wheel The phosphor wheel A is divided into 3 segments comprised of the blue transparency yellow phosphor and green phosphor B Dichroic mirror C Collimator Filt...

Page 127: ...coherence is lowered as it passes through the filter wheel and other parts so the projection light is not dangerous What s coherence Coherence refers to the characteristic of waves indicating the degr...

Page 128: ...ight energy E can be calculated by the formula E a constant wavelength and the shorter the wavelength the higher the energy The red laser light is used for the CD DVD laser light source and optical re...

Page 129: ...MEMO 127...

Page 130: ...MEMO 128 EN...

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