Question about NEC NP-M300XS- Xga Lcd Proj 3000lumen Shrt Thrw Hdmi Wls P/N: Np-M300x

3 Answers

My nec np-m300x has a dynamic contrast error. How do i repair this?

The lamp comes on and displays an image for a few seconds, then the unit beeps 3 times and goes back to standby mode, after which the status indicator blinks red 9 times and continues this cycle till i power it off

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  • 4 more comments 
  • Dan Hulbert May 28, 2013

    Was this ever fixed? I have the same issue.

  • Jevon R Jun 12, 2013

    yes this was fixed. Thanks a million Thomas

  • Pieter Vickers
    Pieter Vickers Nov 04, 2013

    Having the same issue with 3 brand new NEC M230X projectors, any tips? :)

  • TDXAV Brisbane
    TDXAV Brisbane Mar 31, 2015

    I have this same issue with ten M300W projectors - they all started doing it at the same time. I've pulled out the iris unit though can't figure out what Thomas is talking about with regards to pulling metal apart. Any further info would be very greatfully appreciated.

  • Anonymous Dec 08, 2016

    The problem is that the motor sticks, if you unscrew the motor on the Iris unit a little, the motor should be able to move freely. You should be able to move the two metal parts back and through freely without any resistance. You could also try adding grease or oil to the gears, this could help a little too. I found that the Iris unit is also not needed, the projector will function without it, but the sensor on the Iris unit does need to detect movement when the projector starts up. Hope this helps anyone reading - thanks, Jack.

  • Jason Poletti
    Jason Poletti Mar 22, 2017

    Hi TDXAV Brisbane,

    I have had the same problem Ten M300w Projectors with the Click of ***** and Nec still will not admit this fault

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9 Blinks is IRIS error the motor can sometimes produce a clicking sound part number 24B17981. If you pull it out and manually move the metal apart the projector should come on and stay on

Posted on May 31, 2013

  • 7 more comments 
  • EMJA Sep 21, 2013

    Thank you so much Thomas, you saved me 600$

  • EMJA Sep 21, 2013

    here's a disassembly planhttp://www.mobilepro.ch/page/info.mv?NOF...

  • Los Los
    Los Los Dec 21, 2013

    THANKS SO MUCH!

  • TDXAV Brisbane
    TDXAV Brisbane Mar 31, 2015

    Hi Thomas, I have this same issue with ten M300W projectors - they all started doing it at the same time. I've pulled out the iris unit though I'm not sure what you mean by pulling the metal apart. The iris unit appears to be clean and undamaged. Any further info would be very greatfully appreciated!

  • Tongo Guns Apr 13, 2015

    The Iris unit has 2 metal bars that open and shut to allow brightness control. The open position is the home position. Open the bars apart and then refit the iris unit. It should then work as normal.

  • Vivi Siregar
    Vivi Siregar May 04, 2015

    please explain detail step by step please .. thanks

  • Philip Tan
    Philip Tan Jan 14, 2016

    My documented fix for this with pictures. http://dynamiccontrasterror.blogspot.sg/

  • Jack Wright
    Jack Wright Dec 08, 2016

    The problem is that the motor sticks, if you unscrew the motor on the Iris unit a little, the motor should be able to move freely. You should be able to move the two metal parts back and through freely without any resistance. You could also try adding grease or oil to the gears, this could help a little too. I found that the Iris unit is also not needed, the projector will function without it, but the sensor on the Iris unit does need to detect movement when the projector starts up. Hope this helps anyone reading - thanks, Jack.

  • Johan Benjamin
    Johan Benjamin Sep 25, 2017

    ^^ this.
    I tried cleaning my iris with alchohol, but the issue persisted. I opened it back up and loosened the motor screw slightly, and the projector booted up normally!

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  • martyn mellerick
    martyn mellerick Sep 23, 2015

    Great Answer! this fix worked perfectly for me.

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Thank a million. Great work you have shared. I have faced the same problem in my nec m350x projector - 9 times blinking of status LED. As per you tips, Today I tried by moving the plate away (motor assembly). First time it worked. Second time same problem repeated. I understood the problem is due to opto-coupler for sensing the home position. So I cleaned the assembly with Petrol and refixed. Now the projector is working fine. So the actual motor noise was due to opto-couple malfunctioning due to dust. Once again thanks.

Dr. M. Jayaprakasan
Deputy Director
ATI, Chennai
jp_ati@vsnl.net

Posted on Aug 05, 2014

  • James Willmore
    James Willmore Nov 17, 2015

    What part are you considering the opto-coupler?

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SOURCE: NEC NP1000 powers up, strikes, then shuts down

the expected lamp life is an average .. its not unusual to see early failures ... check the lamp connections to make sure they are secure ... check ventilation to make sure its not blocked by dust .. if there is a fan, make sure its working ..

Posted on Oct 07, 2009

  • 1 Answer

SOURCE: Blinking status light

Replacing the lamp with an old one was helpful for me. Good news: the projector itself not faulty. Bad news: I have two projectors with the same issue at the same time (the lamps were replaced also at the same time) after only 400 hours of running.

Posted on Jun 23, 2008

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SOURCE: lamp won't light / status indicator blinking red

Replace the bulb.

Posted on Jun 10, 2009

dhiman
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SOURCE: lamp not lighting

Reset the lamp and try it.

Posted on Mar 29, 2008

Gigatech
  • 259 Answers

SOURCE: Status light blinking red

If it is a lamp error try this:
When the lamp exceeds 2100 hoursof service, the projector cannot turn on and the manu is not displayed. Do the following:
For VT670/VT470 Press the help button on the remote control for a minimum of ten seconds.

For VT570/VT47 Press and hold the power and the exit buttons on the remote control simultaneously for a minimum of ten seconds. When the lamp time clock is reset to zero, the lamp indicator goes out. Hope this helps! :]

Posted on Feb 27, 2008

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