REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday, 13 March 2019

HOW TO REPLACE LAMP BENQ MX 722 - PROJECTOR - PROJECTOR REPAIR AND SERVICE - MANUAL SERVICE

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.
Posted By: FRANK at 05:32
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