User manual INFOCUS LP725 - Document

MAINTENANCE This section describes how to: · clean the lens · clean the fan intake filter · replace the projection lamp · replace the batteries in the remote control · use the Kensington lock feature Cleaning the Lens Follow these steps to clean the projection lens: 1 Apply a non-abrasive camera lens cleaner to a soft, dry cloth. · Avoid using an excessive amount of cleaner. · Abrasive cleaners, solvents or other harsh chemicals might scratch the lens. 2 Lightly wipe the cleaning cloth over the lens. 3 If you don't intend to use the projector immediately, replace the lens cap. Cleaning the Fan Intake Filter The fan intake filter on the bottom of the projector catches dust and particles in the air. If the filter becomes clogged, the projector does not cool properly and may malfunction. To prevent this, clean the filter after every 100 hours of use. 1 Turn off the power and unplug the power cord. 2 Remove the filter door. · Carefully place a screwdriver against the indented part of the filter door and lift out. 39 M a i n t e n a n c e FIGURE 32 Removing the filter door 3 Clean the filter. · Use a vacuum cleaner set on low power to remove the dust and dirt. FIGURE 33 Cleaning the air filter 4 Replace the filter. · First, insert the side with the tabs, then press the other end in place. 40 Replacing the Projection Lamp The lamp hour counter on the status bar at the top of the menus counts the number of hours the lamp has been in use. After 2000 hours of use, the lamp monitor LED, marked on the top of the projector near the keypad, lights. After 2050 hours, the lamp switches off completely and must be replaced. You can order new lamp modules from your In Focus dealer. See "Accessories" on page 53 for information. Follow these steps to replace the projection lamp: 1 Turn off the projector and unplug the power cord. 2 Wait 2 minutes to allow it to cool thoroughly. 3 Using a small, flat-blade screwdriver, remove the screw on the outside of the lamp door (Figure 34). 4 Pull the lamp cover up and remove it. WARNING: To avoid burns, allow the projector to cool for at least 2 minutes before you open the lamp module door. Never extract the lamp module while the lamp is operating. FIGURE 34 Removing the lamp module door 5 Loosen the two non-removable screws on the outside of the module. 6 Remove the module (Figure 35). CAUTION: Never operate the projector with the lamp cover open or removed. This disrupts the air flow and causes the projector to overheat. 41 M a i n t e n a n c e FIGURE 35 Removing the lamp module 7 Align the new lamp module in the correct direction. WARNING: Do not drop the lamp module or touch the glass bulb! The glass may shatter and cause injury. 8 Gently push the module in as far as it goes (Figure 36). 9 Tighten the screws on the outside of the module. FIGURE 36 Installing a new lamp module 10 Reposition the lamp cover. 42 11 Replace the screw and tighten it. 12 Plug in the power cord and turn the projector back on. The lamp monitor light and lamp hour counter in the Status bar on the menus are automatically reset. Replacing the Batteries in the Remote Control The life of the batteries depends on how often and how long you use the remote. Symptoms of low battery charge include erratic responses when using the remote and a reduced range of operation. Follow these steps to replace the batteries: 1 Turn the remote face down in your hand. 2 Slide the battery cover off the end of the remote by pressing on it with the heel of your hand. 3 Remove the old batteries. 4 Install two new AAA alkaline batteries. Make sure you install each in the correct direction. 5 Slide the battery cover back on the remote. Using the Kensington Lock The projector has a Kensington Security Standard connector for use with a Kensington MicroSaver Security System (Figure 37). Refer to the information that came with the Kensington System for instructions on how to use it to secure the projector. FIGURE 37 Installing the Kensington lock 43 TROUBLESHOOTING If you're experiencing trouble with the projector, follow these steps to make sure everything is properly connected before you call Technical Support for assistance. 1 Check cable connections. Verify that all computer, CableWizard and power cables are properly connected. 2 Verify that all power is switched on. 3 Verify that the projector has not been switched off with the standby button on the keypad. 4 If the projector still doesn't display an image, restart the computer. 5 If the problem still exists, unplug the projector from the computer and check the computer monitor's display. The maximum resolution that the 720 can display is 1024x768 pixels, preferably 800x600; the maximum resolution that the 730 can display is 1280x1024 pixels, preferably 1024x768. The problem might be with the graphics controller in your computer rather than with the projector. When you reconnect the projector, remember to turn the computer and monitor off before you power up the projector. Power the equipment back up in this order: projector, monitor, computer. 6 If you're using a laptop computer and its monitor is not displaying your presentation, make sure you have re-activated the computer's monitor. Most laptop computers de-activate their own monitor when a second display device, such as the projector, is connected. Refer to page 55 for more information. 7 If the problem still exists, read through the problems and solutions in this chapter. If you call Technical Support for assistance: · Find out what kind of graphics controller card is installed in NOTE: Macintosh computers require a specific power-up sequence: the projector must be turned on before you turn on the computer. your computer. This is the circuit board in the computer to which the projector is connected. 45 T r o u b l e s h o o t i n g Solutions to Common Problems Problem: Nothing on projection screen · Make sure that the power cord is properly connected to a func- tional AC electrical outlet. Make sure that the power cord is also properly connected to the projector. · If the projector is plugged into a power strip, make sure the power strip is turned on. · Make sure you have removed the lens cap on the projection lens at the front of the projector. · Make sure the projector is switched on. · Check the projector's lamp to ensure that it is securely con- nected in the lamp module. See "Replacing the Projection Lamp" on page 41. · Make sure that the CableWizard and the cables do not have any bent pins. Check the power cord for bent pins also. Problem: Color or text not being projected · You might need to adjust the brightness up or down until the text is visible. Refer to "Brightness" on page 27 for more information. · Verify that the appropriate input source is selected. See "Com- puter" on page 27 or "Video" on page 29. Problem: The screen resolution is not right · Make sure the computer's graphics card is set for a resolution of no greater than 1024x768 for the 720, 1280x1024 for the 730. Problem: Image isn't centered on the screen · Reposition the image. Refer to "Horiz. Position" on page 36 and "Vert. Position" on page 36. · If you're using an extension cable between the CableWizard and the projector, make sure it's In Focus-approved. Problem: Only the start-up screen displays · Verify that the cables are connected correctly. Check to see that the CableWizard computer cable is correctly connected to the 46 monitor connector on the computer (this is the connector where your monitor cable usually goes.) See page 8 through page 17 for connection procedures. · Verify that the proper input source is connected. See "Com- puter" on page 27 or "Video" on page 29. · You might need to turn everything off and power up the equip- ment again. Make sure you power up in this order: projector, computer monitor, computer. It is especially important that you follow this sequence for Macintosh computers. · Make sure your computer's graphics board is installed and configured correctly. If you're using Windows 3.x: 1 In the Windows Program Manager, double-click the Windows Setup icon in the Main program group. 2 Verify that the Display setting is 1024x768 or less for the 720, 1280x1024 or less for the 730. If you're using Windows 95: 1 Open "My Computer" icon, the Control Panel folder and then the Display icon. 2 Click the Settings tab. 3 Verify that the Desktop area is set to 1024x768 or less for the 720, 1280x1024 or less for the 730. Also check the following: · Does your computer have a compatible graphics board? The projector isn't CGA or EGA compatible. · Is your computer's graphics board turned on? This is espe- cially true for laptop computers. See "Portable and Laptop Activation Chart" on page 55. Problem: Image is too wide or narrow for screen · You might need to manually adjust the tracking to reduce or enlarge the projected image. Refer to "Manual Tracking" on page 36. 47 T r o u b l e s h o o t i n g · Adjust the resolution of your monitor if it's greater than 1024x768 pixels for the 720 or 1280x1024 for the 730. Only these resolutions at 75 Hz or less will display on the projector. Problem: Image is out of focus · Turn the projection lens to focus the image. · Make sure the projection screen is at least 4 feet (1.2m) from the projector. · Check the projection lens to see if it needs cleaning. Problem: Image and menus are reversed left to right · Rear projection mode is probably turned on. Switch back to for- ward projection from the Controls menu. The image should immediately return to forward projection. See "Rear Projection" on page 38. Problem: Image and menus are upside down · Ceiling mode is probably turned on. Turn off the mode from the Controls menu. The image should immediately return to forward projection. See "Ceiling" on page 38. Problem: the projector displays vertical lines, "bleeding" or spots · Adjust the brightness. See "Brightness" on page 27. · Check the projection lens to see if it needs cleaning. Problem: no sound · Press the mute button. · Adjust volume. · Verify audio/input connections. · Adjust audio source. 48 Problem: Image is "noisy" or streaked Try these steps in this order. 1 Deactivate the screen saver on your computer. 2 Turn Auto Image off and then back on again. See "Auto Image" on page 35. 3 Adjust the synchronization and tracking manually to find an optimal setting. See "Manual Sync" on page 36 and "Manual Tracking" on page 36. · If you're using an extension cable between the CableWizard and the projector, make sure it's In Focus-approved. · The problem could be with your computer's graphics board. If possible, connect a different computer. Problem: Projected colors don't match the computer or video player's colors · Adjust the brightness, tint and/or contrast from the Display menu. Just as there are differences in the displays of different monitors, there are often differences between the computer image and the projected image. See "Brightness" on page 27, "Tint" on page 31 and "Contrast" on page 31. Problem: Lamp seems to be getting dimmer · The lamp begins to lose brightness when it has been in use for a long time. Replace the lamp as described in "Replacing the Projection Lamp" on page 41. Problem: Lamp shuts off · A minor power surge may cause the lamp to shut off. Turn the projector off, wait at least 30 seconds, then turn it back on. Problem: Remote not operating correctly · You might need to replace the batteries. See "Replacing the Bat- teries in the Remote Control" on page 43. · Make sure you're pointing the remote either at the back or front of the projector, or at the projection screen. · Make sure the remote is within its operating range of 40 feet. 49