my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Christie AW3R Center Platter Creeps

Author Topic: Christie AW3R Center Platter Creeps Chad M Calpito Master Film Handler Posts: 435 From: San Diego, CA Registered: Apr 2006 posted 01-08-2007 12:12 PM                        I have a particular problem. The center platter in the Platter system for projector #10 creeps when not in use. When being used, it runs normally (either take-up or pay-out). I made a note in my log book for my technician to fix and I hope he can fix it. But, in the mean time, any ideas as to what is causing this to happen? The platter system has removable brains.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 01-08-2007 12:58 PM                     When this platter is being used as for takeup, with the takeup arm about 6 inches away from the motor, does it still creep? (Do this test without a brain in the takeup deck.) If so your LO pot on the middle speed card is set just barely too high. Turn counterclockwise ever so slightly to stop. If not, it is other things at fault. Please provide more info.  |  IP: Logged Scott Norwood Film God Posts: 8146 From: Boston, MA. USA (1774.21 miles northeast of Dallas) Registered: Jun 99 posted 01-08-2007 01:08 PM                        I've seen this happen with a bad (not just misadjusted) motor card. Try temporarily swapping it with one from another deck and see which deck creeps. Another possibility is that light from the room is hitting the sensor inside the support arm for the deck. Did someone remove the little cover plate for some reason?  |  IP: Logged Chad M Calpito Master Film Handler Posts: 435 From: San Diego, CA Registered: Apr 2006 posted 01-08-2007 02:10 PM                        In answer to your query Brad, which I should have provided more information in my original post, the platter still does creep along when the tension arm is 6 inches away from the tree of the platter. And, in response to your question, Scott, I'm unsure if anyone removed the cover plate since I'm not exactly certain where that is located, unless I'm not looking close enough. Anyway, if I can tonight, I'll check out the platter again & get more information. I have a floor shift tonight, so, I'll do what I can to get more info. Again, thanks for the information, Brad. I'm always learning something new, which is great.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 01-08-2007 07:19 PM                        Really good technique listed under "Tips" on this website for setting the AW3. Louis  |  IP: Logged Chad M Calpito Master Film Handler Posts: 435 From: San Diego, CA Registered: Apr 2006 posted 01-12-2007 10:11 AM                        Here is an update on the problem. The problem was fixed. It was the LO pot that caused the problem. Now, the platter is in good working order. There was just a minor adjustment that had to be made. I really appreciate the information y'all have provided. Like my saying goes, "I learn something new everyday."  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 01-12-2007 01:35 PM                     A touch up adjustment is fine for now but it is still a good idea to calibrate AW-3 platters at least every 6 months for best performance. The LED's are notorious for fade rate and this causes the sensor resistance to creep up in value. Using Brads method described on the tips page or the factory manual are the only two methods to use. Its VERY easy to do and only requires a cheapo VOM and stopwatch or for quicker completion a platter tach. You'll find that after you've done a few of them it will take you less than 15 min. per platter system to accomplish. Mark  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 01-12-2007 01:50 PM                     Time one platter to absolute perfection, then purchase a platter tachometer from Christie, note the readings, then all future platters will only take about 1-2 minutes per deck to time using the tachometer.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 01-12-2007 01:59 PM                     Yes, I'll second that on the usage of the "Plattertach" being one of the best tools in the toolbag to have in the booth when working on platter transport systems.  |  IP: Logged Chad M Calpito Master Film Handler Posts: 435 From: San Diego, CA Registered: Apr 2006 posted 01-12-2007 02:15 PM                        I'll definately put this information to good use. I'll agree that proper booth maintenance is 100% essential. I really appreciate all of your kind advice, tips, etc.  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.