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InFocus 900 Series Service Manual

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900 Series Service Guide
010-0319-00

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Summary of Contents for InFocus 900 Series

  • Page 1 900 Series Service Guide 010-0319-00...

  • Page 2: Safety Precaution

    SAFETY PRECAUTION WARNING: Service should not be attempted by anyone unfamiliar with the necessary precautions on this projector. The following are the necessary precautions to be observed before servicing this chassis. 1 . An isolation Transformer should be connected in the power line between the projector and the AC Iine before any service is performed on the projector.

  • Page 3: Table Of Contents

    Table of Contents Table of Contents ......................3 Safety Precautions ......................4 Important Precautions ....................4 Important Safety Instructions ..................5 Parts Replacement ......................7 Adjusting the optional ultra wide angle lens..............7 Bottom case....................... 10 ECA stack........................13 Elevator assembly ..................... 16 Exhaust fan assembly....................

  • Page 4: Safety Precautions

    SAFETY PRECAUTIONS WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. DANGEROUS HIGH VOLTAGES ARE PRESENT INSIDETHE ENCLOSURE. DO NOT OPEN THE CABINET. REFER SERVICING TO QUALIRED PERSONNEL ONLY. CAUTION: Laser beam is emitted when the laser button of the remote control is pressed.

  • Page 5: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS CAUTION: PLEASE READ AND OBSERVE 1. Read Owner's Manual 3. Source of Light ALLWARNINGS AND After unpacking this product, read the Do not look into the lens while the lamp INSTRUCTIONS GIVEN IN THIS owner's manual carefully, and follow all is on.
  • Page 6 IMPORTANT SAFETY INSTRUCTIONS Object and Liquid Entry 13. Stack Inhibited Accessories Never push objects of any kind into this Do not stack other equipment on this Do not place this product on an unstable product through openings as they may product or do not place this product on the cart, stand, tripod, bracket, or table.

  • Page 7: Parts Replacement

    Parts Replacement Adjusting the optional ultra wide angle lens You adjust the image cast through the ultra-wide angle lens to match a specific rear projection screen size. The ultra-wide angle lens is not compatible with the LP925. To make this adjustment, the projector must be mounted in the rear projection mechanism. The projector should be plugged into a power source.
  • Page 8 Use the 3mm ball head hex wrench (included with the lens) to loosen the two focus ring mounting screws. Do not remove the screws. They only need to be loose enough to adjust the focus ring. Use the 3mm ball head hex wrench to loosen the two plane correction ring mounting screws. Do not remove the screws.
  • Page 9 Rotate the focus ring and the resolving plane correction ring to adjust the image. The image should be sharp across the entire screen. Tighten the four screws. LP900 Series Service Manual...

  • Page 10: Bottom Case

    Removing and replacing the bottom case The bottom case (LP920: 505-0675-xx; LP925, LP930: 505-0854-xx) encloses the bottom half of the projector. When you replace the bottom case, you must first remove all the FRUs in the old case, then install them in the new bottom case. You also need to install a certification label (IOpen 920: 020-1011-xx; LP920: 020-1000-xx;...
  • Page 11 Remove the front bezel bracket from the bottom case. To do this, use a T-10 Torx driver to remove the M3x8 screws that fasten the bracket to the bottom case. Save the bracket. You'll need to install it in the new bottom case. Use a hair drier or heat gun to loosen the serial number label (shown below).
  • Page 12 Assembly Notes ♦ Install the front bezel bracket (removed in step 3 above) in the new bottom case. ♦ Attach a new certification label to the recessed area on the outside of the bottom case. Then attach the serial number label to the new certification label. ♦...

  • Page 13: Eca Stack

    Removing and replacing the ECA stack The ECA stack (LP920, IOpen 920: 526-0068-xx; LP925, LP930: 526-0068-xx) consists of the I/O ECA, controller ECA, I/O shield and I/O bezel. The I/O shield and I/O bezel fasten to the ECA stack with two screws.
  • Page 14 Use a T-10 Torx driver to remove the nine M3x8 Torx screws that attach the ECA stack to the power supply and optical engine. Carefully lift the ECA stack upward to disengage connectors on the bottom side of the controller ECA from the optical engine and power supply.
  • Page 15 Assembly Notes ♦ Make certain that the two connectors on the bottom side of the controller ECA align properly with the connectors on the optical engine and power supply. Then press the controller down to engage the connectors. ♦ Fasten the ECA stack to the optical engine and power supply with the M3x8 screws. Tighten the screws to 4 in.-lbs.

  • Page 16: Elevator Assembly

    Removing and replacing the elevator assembly The elevator assembly (505-0647-xx) is comprised of four pieces: a housing, the elevator shaft and two springs, the elevator actuator, and the elevator button. The rubber foot (505-0649-xx) at the bottom of the elevator shaft supports the front of the projector in desktop applications. The elevator button presses onto the end of the spring-loaded actuator and extends through the front bezel.
  • Page 17 Assembly Notes ♦ Position the elevator so that the actuator faces the front of the projector before you insert the end of the elevator shaft through the hole in the bottom case. ♦ Fasten the elevator to the bottom case with the M3x8 screws. Tighten the screws to 4 in.-lbs. (.452 Nm).

  • Page 18: Exhaust Fan Assembly

    Removing and replacing the exhaust fan assembly The exhaust fan assembly (LP920, IOpen 920: 505-0679-00; LP925, LP930: 505-0679-01) consists of the exhaust fan and exhaust fan bracket in which the faNmounts. The assembly is located at the rear of the projector inside of the rear bezel.
  • Page 19 Lift the tab that holds the interlock switch in position on the exhaust fan bracket and slide the interlock switch out of the recess on the bracket. LP900 Series Service Manual...
  • Page 20 Lift the exhaust fan assembly from the bottom case. Assembly Notes ♦ Position the exhaust fan assembly so that it rests in the guide slots in the bottom case. ♦ Slide the interlock switch into the recess in the exhaust fan bracket. The tab on the bracket snaps over the switch to hold it in position.

  • Page 21: Filter Tray

    Removing and replacing the filter tray The filter tray (505-0819-xx) is located on the underside of the bottom case. The tray contains a fine mesh filter that cleans the air as it is drawn into the projector by the fan on the bottom of the optical engine. The tray fits into a cavity on the left side of the bottom case and fastens with two screws.

  • Page 22: Focus And Zoom Rings

    Removing and replacing the focus and zoom rings The focus ring (LP920, IOpen 920: 505-0751-xx; LP925, LP930: 505-0752-xx) fits around the front of the projection lens. The zoom ring (LP920, IOpen 920: 505-0752-xx; LP925, LP930: 505-0786-xx) fits inside the focus ring. The lens cap (340-0445-xx) fits over the focus ring. Each ring secures to the lens with three M2x5 plastite Phillips screws.
  • Page 23 Remove the three Phillips screws that fasten the focus ring to the lens barrel, then pull it off the front of the lens. NOTE You can access only two of screws from the top side of lens. Remove the other screw from bottom side of the lens.

  • Page 24: Front Bezel

    Removing and replacing the front bezel The front bezel (LP920, IOpen 920: 505-0750-xx; LP925, LP930: 505-0852-xx) covers the front of the projector. It fastens to the metal chassis inside the projector with three screws. The front bezel vent (505-0680-xx) fastens to the outside of the front bezel with three snap fasteners. You remove the front bezel vent to access the front bezel screws.
  • Page 25 Pull the front bezel forward to separate it from the projector. Assembly Note ♦ Make sure that the front bezel fits over the lip on the front of the top and bottom cases. The elevator button extends through the hole at the bottom center of the front bezel. Tighten the three M3x8 screws to 4 in.-lbs.

  • Page 26: Ir Assembly And Ir Window

    Removing and replacing the IR assembly and IR window The IR assembly (540-1478-xx) fastens to the inside of the top case in the projector, beneath the IR window (340-0657-xx). The IR cable, part of the IR assembly, connects the IR receiver with the controller ECA.
  • Page 27 Remove the IR window by squeezing the two black snap tabs on the inside of the window, then pressing the window through its hole in the top case. Assembly Notes ♦ Align the guide tabs on the IR window with the slots in the top case, then press the window into place. ♦...

  • Page 28: Keypad Assembly

    Removing and replacing the keypad assembly The keypad assembly (526-0045-xx) fastens to the inside of the top case. The keypad cable, part of the keypad assembly, connects the keypad with the controller ECA. Remove the following items: Front bezel (see page 24) Rear bezel (see page 43) Top case (see page 47) With the top case upside-down on the bench, remove the two M3x8 Torx screws that secure the...

  • Page 29: Lamp Module

    Removing and replacing the lamp module The lamp module (LP920, IOpen 920: SP-LAMP-IO9; LP925, LP930: SP-LAMP-LP9) provides a spectrum-balanced, concentrated, and carefully focused light beam for the optical engine. It is located at the rear of the projector inside the lamp housing which is a part of the optical engine. The lamp module fastens to the lamp house with three captive screws.
  • Page 30 Assembly Note ♦ When installing the lamp module, align the lamp connector on the module with its mate inside the projector. Then press the module into place until the lamp connector seats. Be sure to tighten the three captive screws before replacing the rear bezel. LP900 Series Service Manual...

  • Page 31: Projection Lens

    The ultra-wide angle lens is not compatible with the LP925. In all 900 Series projectors except the LP925, the projection lens fastens to an adjustable cradle forward of the optical engine. The cradle adjusts the lens up or down when the lens shift knob is turned. The LP925 does not include the lens shift adjustment.
  • Page 32 Assembly Notes ♦ Before installing the projection lens, check the label on the mounting flange to identify the upper side of the flange. Position the flange so that the arrow on the label points toward the top of the projector. ♦...
  • Page 33 ♦ The registration pin on the cradle (circled below) must align with the hole on the lens flange. ♦ Start the two screws on the top of the lens flange first. This makes it easier to start the screws on the bottom of the lens.

  • Page 34: Optical Engine

    Removing and replacing the optical engine The optical engine (LP920, IOpen 920: 530-0108-xx; LP925: 530-0115-xx; LP930: 530-0114-xx) is located adjacent to the power supply at the side of the projector opposite the I/O ports. It fastens to the bottom case and produces the projected image by directing focused light from the lamp module through three polysilicon LCDs.
  • Page 35 Use a T-10 Torx driver to remove the two M3x8 screws that fasten the thermal switch to the lamp housing on the optical engine. Then lift the switch from its recess in the lamp housing. Use a T-10 Torx driver to remove the two M3x8 screws that fasten the lamp connector retainer to the lamp housing on the optical engine.
  • Page 36 Lift the rear of the lamp connector to remove it from the recess in the lamp housing. Use a #2 Phillips driver to remove the five M4x6 screws that fasten the optical engine to the bottom case. Remove the optical engine from the bottom case. LP900 Series Service Manual...
  • Page 37 Assembly Notes ♦ Fasten the optical engine to the bottom case with the M4x6 screws. Tighten the screws to 6 in.-lbs. (.678 Nm). ♦ When you replace the lamp connector in the lamp housing, make sure that the connector terminals are positioned properly to accept the lamp module.

  • Page 38: Power Supply

    Removing and replacing the power supply The power supply (LP920, IOpen 920: 505-0077-xx; LP925, LP930: 505-0077-3x) is located adjacent to the optical engine at the side of the projector beneath the I/O ports. It fastens to the bottom case and converts the 100-240 VAC supply voltage to various low voltage DC levels required internally by the projector.
  • Page 39 Use a T-10 Torx driver to remove the two M3x8 screws that fasten the thermal switch to the lamp housing on the optical engine. Then lift the switch from its recess in the lamp housing. Use a T-10 Torx driver to remove the two M3x8 screws that fasten the lamp connector retainer (340-0769-xx) to the lamp housing on the optical engine.
  • Page 40 Lift the rear of the lamp connector to remove it from the recess in the lamp housing. Use a T-10 Torx driver to remove the two M3x8 screws that fasten the power supply to the bottom case. LP900 Series Service Manual...
  • Page 41 Slide the power supply toward the front of the projector to disengage the tabs on the rear bottom of power supply from the slots in the bottom case. Lift the front of the power supply to remove it from the bottom case. You may need to flex the side of the bottom case outward slightly to allow the tab on the mounting bracket to clear the case retainer slide.
  • Page 42 ♦ When you replace the lamp connector retainer, make sure that deeper screw recess is nearest the side of the projector with the I/O ports and that the retainer fits properly over the lamp connector. Fasten the retainer to the lamp housing with the M3x8 screws. Tighten the screws to 4 in.-lbs. (.452 Nm).

  • Page 43: Rear Bezel

    Removing and replacing the rear bezel The rear bezel (LP920, IOpen920: 505-0680-xx; LP925, LP930: 505-0857-xx) covers the rear of the projector. It helps secure the top and bottom cases together. It fastens to the projector with seven screws. NOTE The rear bezel contains a plunger that engages the interlock switch on the exhaust fan assembly. The projector will not operate after you remove the rear bezel unless you defeat the interlock switch.
  • Page 44 Assembly Notes ♦ The rear bezel fits flush against the rear of the top and bottom case. The interlock switch plunger on the rear bezel engages the interlock switch when the rear bezel is in position on the projector. ♦ Fasten the bezel to the projector with the black M3x8 screws.

  • Page 45: Speakers

    Removing and replacing the speakers Left (505-0677-xx) and right (505-0678-xx) speakers provide stereo sound from the projector. The left speaker is located at the rear side of the projector behind the optical engine. The right speaker is located on the opposite side of the projector behind the power supply. The speakers face the sides of the projector.
  • Page 46 To remove the left speaker Remove the following items: Front bezel (see page 24 ) Rear bezel (see page 43 ) Top case (see page 47 ) Exhaust fan assembly (see page 18 ) ECA stack (see page 13 ) From the outside of the bottom case, fully extend the leveling foot.

  • Page 47: Top Case

    Removing and replacing the top case The top case (LP920, IOpen920: 505-0676-xx; LP925, LP930: 505-0853-xx) encloses the top half of the projector. When you replace the top case, you must first remove all the FRUs in the old case, then install them in the new top case.
  • Page 48 Pull the two case retainer slides forward to release the top case from the bottom case. Gently lift the top case up and away from the bottom case. Assembly Notes ♦ The exhaust fan bracket fits flush into a recess between guides in the top case. Make sure that the exhaust fan bracket aligns properly between the guides as you lower the top case onto the projector.

  • Page 49: Software

    Software Download the software When you click the Download Now button, the File Download dialog box appears. In the File Download box, select Save This Program To Disk option, then click OK. In the Save As dialog box, navigate to the folder in which you want to store the file, then click NOTE Once you install the software files, you won’t need the .EXE file you download.

  • Page 50: Install The Software On The Computer

    To transfer the file to another computer, place the .EXE file on a floppy disk. NOTE These instructions work for all software upgrades from InFocus. The only difference will be the projector name and software version number. Open Windows Explorer on your computer.

  • Page 51: Upgrade The Software Through The Cablewizard 2

    NOTE If you can't find the file, use the Windows Find feature to locate the file. On the Tools menu, point to Find, then click Files or Folders. In the Find dialog box, enter the name of the file (for example, 920v1.0.exe).
  • Page 52 Connect the projector to the computer with the 210-0107-00 cable Turn the selector on the CableWizard until PC appears in the CableWizard window. Plug the PS/2 end of the serial cable into the serial connector on the CableWizard. Plug the other end of the serial cable into the Communication Port 1 (COM1) on the computer. Connect the CableWizard connector to the CableWizard port on the projector I/O panel.
  • Page 53 When the prompt Press any key to continue appears, press any key on the computer keyboard. A second screen appears—again with the prompt, Press any key to continue. Press a key, then watch for the circular timer to appear. The circular timer resembles a slash ( / ) that rotates. It is located next to the text, Synchronizing Comm link Press the power button on a remote control within five seconds of the appearance of the timer.
  • Page 54 If you see the message No response, it means the projector wasn’t turned on within five seconds. WARNING Turning the projector off while the upgrade files transfer can damage the controller ECA. When the installation is complete, the lamp ignites and the startup screen appears on the screen. Confirm the software upgrade On the projector keypad, press Menu to display the menus Use the remote control or the keypad buttons to open the Status window.
  • Page 55 Upgrade the software remotely through the RS-232 port When you upgrade a projector mounted on the ceiling or in a rear projection booth, you can use the control computer to perform the upgrade. You must load the upgrade software into the computer before proceeding (see page 69).
  • Page 56 Press a key, then watch for the circular timer to appear. The circular timer resembles a slash ( / ) that rotates. It is located next to the text, Synchronizing comm link… Press the power button on a remote control within five seconds of the appearance of the timer. The upgrade files download to the projector.
  • Page 57 Confirm the software upgrade On the projector keypad, press Menu to display the menus Use the remote control or the keypad buttons to open the Status window. The new software version number appears in the Status window. LP900 Series Service Manual...

  • Page 58: Functional Tests

    Make sure the video player has an S-video Out port and cables. The player should also have a Composite video output port (RCA). InFocus strongly suggests you use a DVD player to test the video quality. DVD players reproduce colors better and project sharper images.

  • Page 59: Before Beginning

    Before beginning Make sure the work surface where you perform the functional tests is level and clean. Place the projector on a soft surface (such as an anti-static mat) when running the tests. Connect the following to the I/O panel on the projector: ♦...
  • Page 60 The next step is to observe 3 Verify that the images project synchronize properly through the computer images. These will following inputs: confirm that the computer input RGBHV works properly, and will test VESA image quality. M1 Analog Press the Computer button on M1 Digital the keypad.
  • Page 61 Image #4: SMPTE133 Project the SMPTE133 image. Verify that there are no noise, tint, duplicating columns, or other general image abnormalities present On the keypad, press Menu. On Verify that the image synchronizes. the Display menu, select Reset All. Power Down Verify unit is powered off before disconnecting cables.

  • Page 62: Troubleshooting

    Troubleshooting Troubleshooting Power Problems Page 64 Page 63 Page 66 LP900 Series Service Manual...
  • Page 63 Page 38 Page 74 Page 38 Page 13 Page 34 LP900 Series Service Manual...
  • Page 64 Page 29 Page 75 Page 65 LP900 Series Service Manual...
  • Page 65 Page 38 Page 74 Page 13 Page 74 Page 38 LP900 Series Service Manual...
  • Page 66 Page 21 Page 38 Page 13 Page 34 LP900 Series Service Manual...
  • Page 67 Troubleshooting Image Page 69 Page 69 Page 70 Page 68 LP900 Series Service Manual...
  • Page 68 Page 13 Page 34 LP900 Series Service Manual...
  • Page 69 Page34 Page 29 Page 13 Page 34 LP900 Series Service Manual...
  • Page 70 Page 74 Page 13 Page 38 LP900 Series Service Manual...
  • Page 71 Troubleshooting Keypad Page 28 Page 28 Page 13 LP900 Series Service Manual...
  • Page 72 Troubleshooting Remote Page 13 LP900 Series Service Manual...
  • Page 73 Troubleshooting Audio Page 74 Page 44 Page 44 Page 13 LP900 Series Service Manual...
  • Page 74 Controller ECA diagram To open the projector and power it up, see Powering up the projector with the top case removed on page 75 before proceeding. LP900 Series Service Manual...
  • Page 75 Powering up the projector with the top case removed To check voltages, resistances and fans inside the projector, you need to power up the projector with the top case removed. You also need to remove the top case to check speaker resistance. Remove the following items: Front bezel (see page 24) Rear bezel (see page 43)

  • Page 76: Parts Lists

    Parts Lists FRUs by alphabetic listing Below is an alphabetically arranged list of FRUs used in the LP900 Series projectors. You can also view FRUs by numeric listing on page 80. Part Name Projector Part Number Notes Bezel, front LP920 505-0750-xx Does not include front bezel vent.
  • Page 77 Exhaust fan LP920 505-0679-00 Use the -00 version to replace the assembly in the assembly IOpen 920 LP920 and IOpen 920 only. Consists of exhaust fan and plastic housing. Exhaust fan LP925 505-0679-01 Use the -01 version and above to replace the assembly assembly LP930 in the LP925 and LP930.
  • Page 78 Label, LP925 020-1071-xx Sheet of five labels. Required for new top case. model Lamp IOpen 920 SP-LAMP-IO9 Note that lamps no longer carry a 9-digit part number. module LP920 They now carry the 9-character Marketing Item Code (MIC). Lamp LP925 SP-LAMP- Note that lamps no longer carry a 9-digit part number.
  • Page 79 Ring, zoom IOpen 920 505-0752-xx LP920 Ring, zoom LP925 505-0786-xx LP930 Slide, case 340-0660-xx Two required for new bottom case. retainer Speaker, left 505-0677-xx Speaker, 505-0678-xx right Vent, front 505-0688-xx Snaps onto the front bezel. bezel LP900 Series Service Manual...

  • Page 80: Frus By Numeric Listing

    FRUs by numeric listing Below is an numerically arranged list of FRUs used in the LP920 Series projectors. You can also view FRUs by alphabetic listing on page 76. Part Name Projector Part Number Notes Label, model LP920 020-1012-xx Sheet of five labels. One required for new top case.
  • Page 81 Knob, lens LP920 340-0651-xx There is no lens shift feature on the LP925. shift IOpen 920 LP930 IR window 340-0657-xx Slide, case 340-0660-xx Two required for new bottom case. retainer Retainer, lamp LP920 340-0769-xx Secures lamp connector to top of lamp housing. connector IOpen 920 Retainer, lamp...
  • Page 82 Exhaust fan LP925 505-0679-xx The last two numbers of the part number begin assembly LP930 with -01. However, they may change if the assembly is revved. Consists of exhaust fan and plastic housing. Bezel, rear LP920 505-0680-xx IOpen 920 Bezel, rear LP925 505-0857-xx LP930...
  • Page 83 ECA stack LP925 526-0077-xx Includes I/O ECA, controller ECA, I/O shield and LP930 I/O bezel. Optical engine LP920 530-0108-xx Includes upper and lower cooling fans and LCD IOpen 920 driver ECAs. Optical engine LP930 530-0114-xx Includes upper and lower cooling fans and LCD driver ECAs.

  • Page 84: Parts List - Fasteners

    Parts list - Fasteners Below is a list of the fasteners included in the fastener kit (802-0024-xx) for the 900 Series projectors. You'll also find the suggested torque settings for each fastener. Fastener Application Torque M3x8 Torx Front bezel (3), option card baffle (2), ECA stack 4 in.-lbs.

  • Page 85: Standard Accessories

    Standard Accessories Below is a list of accessories packaged with the 900 Series. See the InFocus Accessory Store on the InFocus web site for a complete list of optional accessories. Description Projector Part Number Notes User's Guide LP920 010-0244-xx User's Guide...

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