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Author Topic: Dolby CP200 Help William T. Parr Jedi Master Film Handler Posts: 823 From: Cedar Park, TX Registered: Nov 2000 posted 03-24-2004 06:46 PM                     Hey Guys. I just swapped out the Dolby CP 65 with the 200 at the Paramount today and I am having a problem with the Cat 108 cards wanting to default to projector 2 in the optical format no matter which projector is selected on the front panel. Selecting anything other than projector 2 and pressing go does not change this. Any suggestion and where I can start to look a this? This is a 2 projector non automated changeover booth.  |  IP: Logged Daryl C. W. O'Shea Film God Posts: 3977 From: Midland Ontario Canada (where Panavision & IMAX lenses come from) Registered: Jun 2002 posted 03-24-2004 06:53 PM                        Have you tried disconnecting the lines going to the projector selection terminals (BS22/10, BS22/11, BS22/12)? It sounds like it's latched, keeping it on proj 2. I'd also check for correct PJ1 and PJ2 jumper settings.  |  IP: Logged Rick Long Jr Expert Film Handler Posts: 211 From: Toronto, Canada Registered: Jul 2000 posted 03-24-2004 07:20 PM                     Check the cat 156 projector/format logic card. There is a link for proj initial condition select. Someone may have moved it to #2. Also check that links W101 and W102 are in there. W103 and W104 are for proj 3 and 4 and are not required. If W101 is not there it will not select proj 1.  |  IP: Logged William T. Parr Jedi Master Film Handler Posts: 823 From: Cedar Park, TX Registered: Nov 2000 posted 03-24-2004 07:22 PM                     Nothing is connected to the projector select part of the 200 as of yet. All jumpers are accounted for on the Cat 156 card.  |  IP: Logged Rick Long Jr Expert Film Handler Posts: 211 From: Toronto, Canada Registered: Jul 2000 posted 03-24-2004 10:45 PM                     So,what youre saying is that the control unit says you're on proj 1 but the cat 108 is on proj 2??  |  IP: Logged William T. Parr Jedi Master Film Handler Posts: 823 From: Cedar Park, TX Registered: Nov 2000 posted 03-24-2004 10:47 PM                     That is correct Rick. Even though the front panel shows to be on Proj 1 both the 108 and 201 cards show projector 2. And this only happens in the Optical and Mag formats  |  IP: Logged Rick Long Jr Expert Film Handler Posts: 211 From: Toronto, Canada Registered: Jul 2000 posted 03-24-2004 11:26 PM                     Not meaning to be insulting, but is the emergency bypass switch in the proj 2 position maybe? If you have access to one, try swapping the cat 156. Or at least try alternately pulling the cat 201 and 108 in case one of them is holding it. The only other thing I can think of right now is to check the states of the proj control relays on the back. Is p2 energized all the time or do they follow the front panel? Could it be a bad JM 30 ribbon cable?  |  IP: Logged William T. Parr Jedi Master Film Handler Posts: 823 From: Cedar Park, TX Registered: Nov 2000 posted 03-25-2004 09:59 AM                     Hey Rick, This is the first CP200 I have had to install and troubleshoot so believe me nothing is going to be insulting at this point. We did check to make sure the Operation switch was in the correct position and it was. The only thing my Brother and myself can think is the logic on the 156 card is bad. I will be swapping it and the 108 out with the CP 200 I have at the Highland 10 later today to see if the problem moves to my theatre or not. One thing my brother did mention about this iswhen the CP 200 is first booted up it does shwo everything in proj 1, but once you select the proj 2 button on teh front panel and push GO, the cards go to projector 2 and stay there no matter what you do. We end up powering the unit down to reset it.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-26-2004 09:50 AM                     Check your power supply...verify all of the power rails are at their proper voltage and without ripple...More often than not, a loose screw on the filter caps in the PS1(b) will cause a rail to drop and it will give you that EXACT same problem. It can also give you the problem where you neednt preselect a format...just dial it and the format will change instantly....check the power supplies and get back to us. Steve  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-27-2004 03:17 PM                     "Check your power supply" Steve is correct on this one...This is also why you almost always find a CP-200 with an entire backup supply installed to the main one in the rack. Power supplies never were Dolby's forte.... Mark @ CLACO  |  IP: Logged William T. Parr Jedi Master Film Handler Posts: 823 From: Cedar Park, TX Registered: Nov 2000 posted 04-06-2004 12:12 AM                     OK Guy's, We have two PS1B installed in the daisy chain confguration as set fourth in the CP 200 manual. I measure -14.99 on the -15V output. +14.99 on the +15V output and +25.72 on the +24V output. Both power supplies were in bad shape,and still are, when we recieved them. IE fuse caps were busted and shoved inside one unit, the other has the power switch busted off and has fallen back into the unit. I got to see first hand what is happening with this unit. No matter which projector you pre select as soon as you press GO it automatically forces the Cat 108 and Cat 201 cards into projector 2. Even if I have no projector preselected and press GO it pops both cards into projector 2 mode. Will post a photo of the rack as soon as I can.  |  IP: Logged

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