Am Firs I will beg your pardon for my weak English, bum I’m sure that you can help me for the problem that I have with my Strong CPA-10 Automation systems.
Actually we have two multiplexes they use X-90 console and one Super Highlight all fitted with CPA-10 Automation. They all Work fine. But in our second Multiplex (most recent) all consoles are X-90, and anytime when we switch on the xenon Lamp, the CPA-10 will reboot !
In a Another single-screen theater, we got a Super Highlight II console with a Super reactance rectifier the problem is worst: When the lamp is ignited the CPA-10 reboot and at the intermission when the rectifier is switched off, the CPA-10 Restart the show immediately ! Funny isn’t ?
Of course we have been tried all solution from Strong: Moving away the igniter from the automation cable duct, Putting a new earth link between the Lamphouse and the main earth wire, plugged the CPA-10 main line in a different wall outlet, adding a RF suppression filter on the main line of the CPA-10, Replaced the RF capacitor at the anode termination post, Checked the earth termination on each console and electrical panels. But the problem still the same, especially when the xenon Lamp is Old. The only way to solve this problem for the moment is to let the xenon burning all the day ! but the Changeover Douser plate don’t like it and every 6 month we have to replace them !!
If Someone in this forum has the same problems, and found a solution, please tell me what can I do ? That will be very nice 
Best regards,
Jean-Michel Grin – Europlex Cinemas (Switzerland)
Sorry to be so vauge, but it was a while ago. Maybe Pat Moore can help on here?
We have tried line filters on the line feeding the automation, but to no real advantage.
At one point, the projectionists resorted to shutting off the automation before turning on the xenon lamp, then turning the automation back on. Once the show was running,they placed the manual lamp switch back to the OFF position. Of course this defeats the advantage of the automatic CLOCK-start function of the CPA-10.
I suppose it really comes down to keeping that ignition pulse as short as possible. If you are getting a long ignition pulse instead of a series of short ones, you may wish to try changing the 555 I.C. on the auto-ignition board, as well as perhaps beefing up the rectifier capacitors to give you a higher available starting current.
Another possible solution that I never got around to trying was to replace the ignitors with the newer type used by Strong which are powered from the D.C. from the rectifier. Our experience with these ignitors has been that these usually work first time, every time with an almost inaudible strike length.
Good luck.
The CPA-10 can be troublesome, as it was never quite armor-plated against that 30-40,000 Volt ignition pulse a foot or so away from the computer.
The best way to troubleshoot I've found is to disconnect, one-by-one, the CPA-10 interfaces to the outside world. You will have to go through the manual as I don't remember what plug does what functions, as I am now in Thailand for a little business. Example: there is a single plug that handles all the dimmer connections. Unplug that from the main board of the CPA-10 and then light the xenon. If the system reboots, the problem is somewhere else. Do that with each plug until you find the one (or two) that does not make the CPA-10 reset. Refer to the manual to find what connections are handled with that plug and cable.
A common problem I used to find was with the failsafe. It's cable was too close to the positive DC lead of the console, so it picked up everything that happened and knocked out the automation. Once you find the culprit, isolate that component or cable as you've been trying.
You might also add a ceramic disc capacitor, very high voltage (such as .01mfd, 1kv)from the positve bulb connection to ground. Make this connection as close to the bulb as possible -- right at the positive feed-through where the bulb cable is connected. That might help as well.
Another trick -- there are two can capacitors used in our xenon systems that isolate the DC circuit from ground. One is between negative and ground, the other between positive and ground. They then share a common wire to ground. Be sure that ground wire goes directly to the ground terminal of the console and not to somewhere on the chassis -- that ground may not be reliable. Alternate -- temporarily disconnect that ground wire from the capacitors and see if that effects the problem with the automation.
Good luck, have patience.
Pat
I Will try these tricks:
It has been 1456 days since the last post.
quote: Dominic EspinosaYou could go into the supervisory and change the changeover value to be longer than the default 7 secs.. Thus, when you press the RUN, the dowser will open a lot longer.
I.E. projectionist press the go button, automation waits for a cue, then times out and opens the douser, switches sound, etc.
quote: Dominic EspinosaWhen you press the start button, that is cue "Zero" and when the dowser opens, that is cue "One". as mentioned above, you can prob set the changeover delay to a lot longer interval...to lengthen the cue "ZERO" delay.
In my mind I'm seeing it as an extra cue as the first step of the program, is this correct?
quote: Steve Guttag..and that is the absolute truth..swapped out PS a few times...to clear up crazy headaches that these units can produce.
The other likely culprit is the power supply for the CPA-10
quote: Jean-Michel GrinWell, that's the beauty of this forum, it doesn't erase posts automatically (that's the admins job) so others can search for the questions that have already been answered instead of cluttering it with the same question 10 times causing the regulars to loose interest. Though that probably still happens quite a bit
I'm so surprised to see that my first post on film-tech forum couls came back on the scene.
quote: Monte L FullmerWell, the reason I bring it up is so that when the operator finishes threading and wants to start the show he or she wouldn't have to first motor it up to the starting position and then hit the go button.
When you press the start button, that is cue "Zero" and when the dowser opens, that is cue "One". as mentioned above, you can prob set the changeover delay to a lot longer interval...to lengthen the cue "ZERO" delay.
quote: Dominic EspinosaWhat happened here is that the system didn't recoginize any cues due to that the "CUE LEARN" wasn't turned on.
We had started the show and it stopped at the end of the trailer pack saying "missed cues 1, 2". So I figured there was something else wrong and started it manually.
quote:Reply on 1- : In your supervisory settings, have the sound changeover time factor set to 7 seconds. (which is the default settings from the time the RUN button is pushed, till the dowser opens). You can do two things: Either change the time factor to 5 seconds-(and if you have countdown leader, have the booth people lace the leader to where the area between "8' and "7" is in the framebox when threading. This will let the leader run through just as the dowser opens up - making a good opening presentaion..)
1- Well, the reason I bring it up is so that when the operator finishes threading and wants to start the show he or she wouldn't have to first motor it up to the starting position and then hit the go button.
Cueing the leader would mean it would start at exactly the right spot every time no matter how much leader the operator used during threading and there's no worry of the operator leaving the motor on by mistake or any other mishaps.
2-Wouldn't it be just as simple to make cue 1 the lights down, douser open, all that jazz cue, cue 2 lights up and cue 3 intermission?
It seems to me I saw something like that somewhere else but I think they were runing CNA-100's, I'm not really sure though.
quote: Dominic EspinosaDominic, since you're such a badass gangsta, I can tell you how to semi-convert those crappy things into a start cue assuming they are similar to the CNA100/150 line. It's not a true start cue, but it does work. I will try and 'splain...
Also, and this is kind of a dumb one, can this automation be programmed to start when it hits a cue?
I.E. projectionist press the go button, automation waits for a cue, then times out and opens the douser, switches sound, etc.
quote: Dominic EspinosaActually, unless a particular thread is causing some sort of serious problem outside of the site, ALL posts are archived, right from the very first one back in 1999. Hard drive storage space is relatively inexpensive, so it makes no sense to delete older topics, as occasionally a problem will turn up and the resolution may be found here in the middle of the night. When talking about older or rare equipment, the knowledge archived here becomes even more important as time goes on. This is why we beg people that if you start a topic and end up finding the answer elsewhere (maybe your local tech who isn't a participant or the manufacturer), that you PLEASE post a reply explaining what the fix is. Sooner or later, the problem you are dealing with now will attack someone else. Many people down the road will be thankful for your efforts.
Well, that's the beauty of this forum, it doesn't erase posts automatically (that's the admins job) so others can search for the questions that have already been answered instead of cluttering it with the same question 10 times causing the regulars to loose interest.
quote: Dominic Espinosa...Now...this could point towards a weak ground issue, or excessive ignition drain causing slight voltage drop to the automation - for when bulb ignites and with a more stronger pulse, it's interfering with the power to the automation causing reset.
I noticed when I restruck the lamp the automation reset, again with a program fault.
quote: Dominic EspinosaIt's normal for the battery to be just pressed into the terminal holes ...
When I opened it up between shows tonight I noticed the battery is just sitting on the board with the leads just pressed into the holes, it's not soldered in.
Is this normal?
The battery is reading 3.5vdc. When I put it back in I bent the leads a little so it would make tighter contact with the holes. The unit hasn't forgotten the program but every time it's powered up it says "program fault 2-0".
Interesting to say the least.
quote: Monte L FullmerI realised that a little later on thumbing through the manual.
It's normal for the battery to be just pressed into the terminal holes ...
quote: Dominic Espinosa..once again, as mentioned, it's a cue learn issue. Try this one out for size: go into supervisory and change your cue learn setting from automatic to manual - save and exit.
Mostly it's stopping some time in the trailers but the other day it reset 20 minutes before the show ended
quote: Monte L FullmerIIRC, Dom's theatre now has the last two NOS CPA-10s that Ballantyne had in stock...
I know that STRONG do have new CPA-10 units still in stock, and will let them go for a real good price. That way, the swapout is painless.