ViewSonic PJ650 Service Manual - Page 20

PJ650 6-6 Caring for the air filter The air filter should be cleaned about every 100 hours. If the LAMP indicator and TEMP indicator blink red simultaneously, or a message prompts you to clean the air filter when you turn on the unit, the filter needs to be cleaned. (See "Related Messages" and "Regarding the Indicator Lamps" for details.) 1. Turn off the projector, and unplug the power cord. 2. Apply a vacuum cleaner to the top of the air filter cover to clean the air filter. 3. Turn on the projector, and use the menu to reset the filter timer. To reset the air filter timer, from the OPTION menu, select FILTER TIME. (Depress the RESET button for at least 3 seconds while filter time is being displayed, The reset menu then appear. Select RESET on the menu with the button.) Air Filter Cover 6-7 Lamp (Option Lamp: RLU-150-001(DT00402)) WARNING The projector uses a high-pressure mercury glass lamp made of glass. The lamp can break with a loud bang, or burn out, if jolted or scratched, handled while hot, or worn over time.Note that each HIGH VOLTAGE HIGH TEMPERATURE HIGH PRESSURE lamp has a different lifetime, and some may burst or burn out soon after you start using them. In addition, when the bulb bursts, it is possible for shards of glass to fly into the lamp housing, and for gas containing mercury to escape from the projector's vent holes. • If the lamp should break (it will make a loud bang when it does), unplug the power cord from the outlet, and make sure the type of the replacement lamp. Note that shards of glass could damage the projector's internals, or cause injury during handling. • If the lamp should break (it will make a loud bang when it does), ventilate the room well, and make sure not to breathe the gas that comes out of the projector vents, or get it in your eyes or mouth. • Opening the lamp cover while the projector is suspended from above is dangerous, since if the lamp's bulb has broken, the shards will fall out when the cover is opened. In addition, working in high places is dangerous, even if the bulb is not broken. Please be careful. • If the indicators or a message prompts you to replace the lamp (see the section "Related Messages" and "Regarding the indicator Lamps"), replace the lamp as soon as possible. Using the lamp for long periods of time, or past the replacement date, could cause it to burst. Do not use old (used) lamps; this is a cause of breakage. • If the lamp breaks soon after the first time it is used, it is possible that there are electrical problems elsewhere besides the lamp. • Use the lamp of the specified type only. • Handle with care: jolting or scratching could cause the lamp bulb to burst during use. • Before replacing the lamp, make sure the power switch is off and the power cable is not plugged in, then wait at least 45 minutes for the lamp to cool sufficiently. Handling the lamp while hot can cause burns, as well as damaging the lamp. • Do not use the projector with the lamp cover removed. At the lamp replacing, make sure that the screws are screwed in firmly. Loose screws could result in damage or injury. • Obey local ordinances when disposing of used lamps. In most cases, it is possible to dispose of used bulbs in the same manner as used glass bottles, but in some cases, bulbs are sorted separately. ViewSonic Corporation 19 PJ650