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Author Topic: Problem with convergence CP2215 Nguyen Jack Film Handler Posts: 93 From: Singapore Registered: Mar 2013 posted 07-09-2019 10:42 PM                     hi everyone, I get problem with system CP2215. When i checking the DMD convergence it's shook all the time (see the video: https://youtu.be/QvDC4X8wHZ4 I have change the New LE but still problem Everyone can let me solution to check and fix it. Thanks  |  IP: Logged German Marin Expert Film Handler Posts: 227 From: Verbania (VB), Italy Registered: Jul 2001 posted 07-10-2019 03:24 AM                     The problem is the vibration, there is a LOT of vibration. The exhaust system must not be in direct contact with projector.  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 07-10-2019 04:12 AM                     Most likely source is indeed the ventilation system, but also check other potential vibration sources. Also check your lens mount. Cold airco inlets in front of the porthole/booth window also often cause an instable picture, but this doesn't look like it's heat related.  |  IP: Logged Ken Lackner Phenomenal Film Handler Posts: 1907 From: Atlanta, GA, USA Registered: Sep 2001 posted 07-10-2019 10:04 PM                     Yep, it's a vibration issue. Convergence looks pretty perfect. I agree with the suggestion to check your lens mount. If the boresight set screws are not snugged back up against the projector after adjusting boresight, the lens mount will bounce around like crazy. That or the exhaust are the likely culprits.  |  IP: Logged Nguyen Jack Film Handler Posts: 93 From: Singapore Registered: Mar 2013 posted 07-11-2019 10:13 PM                     I have checked all, I turn off all Fan but still problem, i checked lens mount (Take all drew and take off it) but still problem.  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 07-11-2019 11:57 PM                       The vibration could be in the projector base or floor. Hold the lens in your hands and see if the vibration goes away. You have to be creative in these cases.  |  IP: Logged John Thomas Film Handler Posts: 75 From: Boston, MA Registered: Sep 2011 posted 07-17-2019 09:24 AM                     To add to Sam's advice: Put your hand on the lens while the projector is running and feel the vibration. Then shut the projector completely down and feel again whether the vibration is the same. This way you will know if an internal fan is causing the vibration or if it is being caused externally, and then go from there.  |  IP: Logged Matthew Heuer Film Handler Posts: 20 From: Germantown, NY USA Registered: Dec 2015 posted 07-17-2019 05:00 PM                     If you have trouble sensing the vibration by feel there are phone apps that do a pretty good job at sensing vibration. You could set the phone on the lens and or projector top and compare with the projector off vs running. If you have other units compare it to those as well. Depending on the frequency of your vibration it should show up, there may be certain higher frequency vibrations that may not show up as well, but it's worth a shot. Just be careful your phone doesn't slide off the lens!  |  IP: Logged Danial Simmonds Expert Film Handler Posts: 107 From: Kota Damansara, Selangor, Malaysia Registered: Jan 2008 posted 07-19-2019 08:48 AM                        Hi, I have seen this issue before, first make sure the boresight is tightly locked down, second check the fans look for any abnormal vibrating fans such as the lamp or card cage, third the exhaust system should not be mounted onto the projector.  |  IP: Logged

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