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This topic comprises 2 pages: 1 2
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Author
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Topic: CP-500 not responding to automation
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 06-21-2002 04:59 PM
Ever since I have been at this theatre, one of the CP-500's would only switch into non-sync 50% of the time. Through the months, it got worse. Now non-sync has to be manually engaged at the end of each show. Starting earlier in this week, the CP-500 will not go into any format at the start of the show. It stays in non-sync. (since that is where we manually put it at the end of the show.) I punched the SRA-5 format, and it didn't respond, but instead it shifted into SRD about 1/2 of a second after I mashed the SRA button. The system contains the CP-500, Surround EX Adapter (Dolby Labs), and an USL DPP-10 panel. Automation is a TA-10. The system also had a SDDS that never worked from day ONE, and it was ripped out of the system by another tech. (Namly the company that installed it). I don't think the removal of the SDDS had anything to do with the problem, as that problem was present even before the SDDS was removed. Since I have two problems, I don't think it is the automation, but I have not verified that yet. Any suggestions?
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 06-21-2002 06:01 PM
I'll try that, Gordon. I was going to try some triggering in the automation terminations, but when I looked at that mess, it would take me several hours to figure out how it was wired. So, your idea will be employed.One thing I forgot to mention.....I observed the shut-down to see if I could get some more indications. What I found was this sequence: 1. Chage-over closed.
2. When the Dolby Digital signal was lost, the "Mute" light flashed about 6 times, then defaulted to SRA-5.
3. Then the machine shut down properly when the film expended through the fail-safe.
4. I had to manually engage non-sync. Several times in the past, I have noted the mute light continued to flash until I manually triggered the non-sync format. Hope this helps......Thanks.
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 06-21-2002 06:39 PM
Ken, the firmware version is 1.61EX.One other thing I observed on shut-down is the CP-500 is unmuted when the xenon contactor opens. I *think* this is how it's wired, as the lamp contactor opens about 1/2 second after the motor shuts down. I have to get some more indications and when I do, I'll post them. Just noiced something else....The EX light comes on when lamp and motor shut down, but it does not go into non-sync. 
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 06-22-2002 12:07 PM
Mark, I cannot answer that right now because I don't know. I would presume it is switched directly from the TA-10. However, I did discover an additional relay bolted inside the TA-10, but what its purpose in life is, I have not figured that out yet. I'll have to do some manual triggering to see what it does.There might be a wiring error. The Surround EX activating on tail-out blows my mind. I think that was supposed to be a non-sync trigger, not an EX trigger. I don't know enough about it until I hit the books some more.
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Daryl C. W. O'Shea
Film God
Posts: 3977
From: Midland Ontario Canada (where Panavision & IMAX lenses come from)
Registered: Jun 2002
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posted 06-22-2002 01:49 PM
'Just noticed something else....The EX light comes on when lamp and motor shut down, but it does not go into non-sync.'Paul, if the processor is trying to switch into EX at the end of the projector stop sequence, you could change the format layout on the CP-500 so that the the non-sync softkey is where the EX softkey is now. This may solve the non-sync problem if it is currently trying to switch into EX all the time. Another thought, is the processor trying to switch into non-sync at the beginning of the show? (The non-sync softkey would flash) If it is you could change the softkey to be format 10 (or whatever you want the default to be). Good luck! Daryl
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