HOW TO REPLACE LAMP BENQ MX 722 - PROJECTOR - Projector Repair and service - Manual Service


                                               

                                                         Replacing the lamp

• To reduce the risk of electrical shock, always turn the projector off and disconnect the power cord before
changing the lamp.
• To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before replacing the
lamp.
• To reduce the risk of injuries to fingers and damageto internal components, use caution when removing
lamp glass that has shattered into sharp pieces.
• To reduce the risk of injuries to fingers and/or compromising image quality by touching the lens, do not
touch the empty lamp compartment when the lamp is removed.
• This lamp contains mercury. Consult your local hazardous waste regulations to dispose of this lamp in a
proper manner.
• To assure optimal performance from the projector,it is recommended that you purchase a qualified
projector lamp for lamp replacement.
• If lamp replacement is performed while the projector is suspended upside-down from the ceiling, make
sure that no one is underneath the lamp socket to avoid any possible injury or damage to the human eyes
caused by fractured lamp.
1. Turn the power off and disconnect the projector from the power outlet. If the lamp is hot, avoid burns by waiting for approximately 45 minutes until the lamp has cooled.
2. Loosen the screw(s) that secures the lamp cover on the side of the projector until the lamp cover
loosens

Remove the lamp cover from the projector.


 * Do not turn the power on with the lamp cover removed.
 * Do not insert your fingers between the lamp and the projector.
The sharp edges inside the projector may cause injuries.
 Disconnect the lamp connector from the projector as illustrated.
 Loosen the screw that secures the lamp.
 Lift the handle so that it stands up


 Use the handle to slowly pull the lamp out of the projector.
• Pulling it too quickly may cause the lamp to break and scatter broken glass in the projector.
• Do not place the lamp in locations where water might splash on it, children can reach it, or near flammable materials.
• Do not insert your hands into the projector after the lamp is removed. If you touch the optical components inside, it could cause color unevenness and distortion of the projected images.
As shown in the figure, lower the new lamp
Tighten the screw that secures the lamp.
Ensure the handle is fully laid flat and locked in place.
Reconnect the lamp connector.
• Loose screw may cause a bad connection, which could result in malfunction.
• Do not over tighten the screw

 Replace the lamp cover on the projector.
 Tighten the screw(s) that secures the lamp cover.
• Loose screw may cause a bad connection, which could result in malfunction.
• Do not over tighten the screw.
Connect the power and restart the projector. Do not turn the power on with the lamp cover removed.
                                                      Resetting the lamp timer
15. After the start up logo, open the On-Screen Display (OSD) menu. Go to the SYSTEM SETUP: Advanced> Lamp Settings menu. Press MODE/ENTER. The Lamp Settings page displays. Highlight Reset Lamp Timer. A warning message is displayed asking if you want to reset the lamp timer. Highlight Reset and press MODE/ENTER. The lamp time will be reset to “0”. Do not reset if the lamp is not new or replaced as this could cause damage.