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Author Topic: Dolby CP 650 Non-sync 1 audio input issue Jean-Michel Grin Expert Film Handler Posts: 222 From: Geneva & Lausanne, Switzerland Registered: Jul 2002 posted 09-29-2010 02:34 AM                        Hi again ! recently one of my colleague wanted to connect a cd player to the Non-sync 1 input of the dolby CP 650 cinema processor. But no sound get out... So at first, we checked first the connection audio cable and the format assignment to the softkey U1. everything seems correct. So i opened the processor to check if a connection was broken on the printed board, but everything was fine too. Maybe a electronic fautly card ? How I can check this problem ? Thanks for Your help. Jean-Michel  |  IP: Logged Robert John Jeromson Master Film Handler Posts: 264 From: Auckland, New Zealand Registered: Jul 2004 posted 09-29-2010 02:49 AM                     You could check the Non-Sync level in the install mode. If you open the drop down panel on the front and flick up switch number 6 that will put it into install mode. If you then scoll through the menu you should find the Non-Sync 1 level if it is on 0 that may be your problem. I am sorry but I don't know if they are delivered with any preset default for the Non-Sync 1 level, but you could check it all the same.  |  IP: Logged Demetris Thoupis Phenomenal Film Handler Posts: 1240 From: Aradippou, Larnaca, Cyprus Registered: Apr 2001 posted 09-29-2010 02:49 AM                     The Non-Sync 1 is usually preasinged at the NS button on the front panel of the CP650. There is an audio level gain for the nonsync inputs in the Dolby software or menu which is accessible via a special method. I never found any CP650 with an inoperative non-sync input. Demetris  |  IP: Logged Robert John Jeromson Master Film Handler Posts: 264 From: Auckland, New Zealand Registered: Jul 2004 posted 09-29-2010 02:56 AM                     Format on the NS button is 60  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 09-29-2010 02:58 AM                    Are you trying to use format 60 or 75 on the soft key U1. Is there a reason that you are not using the NS button? it's Default is format 60 but can be changed to 75 to offer a matrixed stereo with subwoofer.  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 09-29-2010 01:03 PM                     Check your display carefully when you select the format..it is possible that someone programmed Non Sync 2 into that button. It is very easy to re-assign and you do NOT need to play with the switches to do it...scroll thru the MENU options to change button assignments and be sure to press the OK button when you have the settings you want. WARNING: Do NOT make any changes while a show is running as the sound may cut out momentarily during the save operation.  |  IP: Logged Richard Hamilton Phenomenal Film Handler Posts: 1341 From: Evansville, Indiana Registered: Jan 2000 posted 09-29-2010 02:07 PM                     push the "play" button on the CD player  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 09-30-2010 05:53 PM                     quote: Richard Hamilton push the "play" button on the CD player That made me laugh as I did a similar thing during the UC Irvine HIB 100 upgrade (see the pics in the warehouse) with my CP-650. As I was integrating things on a gradual basis while still running shows, I had to run a DVD and had no sound. After a lot of head scratching and cussing I remembered I had disconnected the audio from the N/S inputs so I could play my iPod while working on the system earlier that same day. DOH!!  |  IP: Logged Jean-Michel Grin Expert Film Handler Posts: 222 From: Geneva & Lausanne, Switzerland Registered: Jul 2002 posted 10-01-2010 01:35 AM                        Hello all ! Thanks for Your replies, I had already checked if the equipment was right connected and the CD player was in "play" mode. (In this case, it was a DVD player for a video presentation) For more clarity I will explain You how the system is setup: -On non-sync 2 input we got the BGM line who come from a cetralized music mp3 player. this input is assigned with format 61 to the "NS" softkey. -The format 62 is assigned to the U2 softkey, for PA announcement trought the surround speakers with a microphone connected to the mic input at the rear of the processor. -The non-sync input 1 is assigned to the U1 softkey with the format 75 (Prologig decode w/ sub). Here I get no sound. -I checked the input level preset, the configuration and even I tried to assigna different source, like a film format or the internal test tone, and here it's work. So I think tha we got a defective hardware component inside this dolby. If someone experienced the same trouble, it will be very helpfull. Thanks for Your answers, and apologyzes for my weak English ! Best regards. Jean-Michel  |  IP: Logged Robert John Jeromson Master Film Handler Posts: 264 From: Auckland, New Zealand Registered: Jul 2004 posted 10-01-2010 02:20 AM                     No problem, do come back and let us know how you get on with the problem, especially if you solve it.  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 10-01-2010 12:55 PM                     Jean-Michel, did you try using another dvd player or cd player in that N/S 1 input? Another thing to check is on the dvd player itself, in your setup menus, some dvd players will not output 2 channel audio to the left/right jacks if an option of "2-Ch downmix" or "Stereo downmix" or something of that same effect is not selected. It is very unlikely to have a CP-650 hardware problem without affecting the other N/S input. Speaking of which, did you try the dvd player in the N/S 2 input? (Or try putting your BGM into N/S 1.)  |  IP: Logged Jean-Michel Grin Expert Film Handler Posts: 222 From: Geneva & Lausanne, Switzerland Registered: Jul 2002 posted 10-02-2010 01:09 PM                        Hello All Of course we tried to swap the non-sync BGM audio source and the DVD player audio output between the two non-sync inputs of the CP 650. But it still without sound. So for the moment, to play the sound of the DVD player, we disconect the BGM and connect the other source in place. So I think that we got an hardware problem. Next week I will take a laptop to check the Log of the processor. Perhaps I could discover what's wrong... Thanks all for your advices and ideas. Best regards. Jean-Michel  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 10-02-2010 02:46 PM                     Our RCA connectors were very hard to unplug from our 650's. One of our projectionists tried to twist the connector while pulling it off but eventually the 650's RCA connector twisted as well, snapping the internal connections.  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 01-30-2012 12:43 AM                 It has been 484 days since the last post.  |  IP: Logged Bob Ezra Film Handler Posts: 75 From: Carbondale, CO, USA Registered: Apr 2001 posted 01-30-2012 12:43 AM                     so how was this fixed? I have the left non-sync 1 outputting to the left channel and nothing coming out of the right...seems like a loose or disconnected right input jack. thanks  |  IP: Logged

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