Rock-ola CD-8 CD player plug

I have a mid-'90's "black system" gazelle/HD box ( serial # 562041) that has some in-transit damage (bolt them players down before moving!) to the flat ribbon wiring harness that connects the 57000-A, S-5A computer to the 56955-A cd player and the 56205-A power supply.
At the 11 terminal, white J1 plug that connects this harness to the cd player, there are two wires that have pulled out of the back of the plug. The problem is that there is only one terminal (#8) that obviously has a wire(s?) missing. I did a continuity test on the loose wires and traced them to the 30 terminl, black P2 plug that is attached to the S-5A computer and found they are wires 10 & 12 which according to the Victory Glass supplied repair manual are a "scan" wire (#12) and a "power comm." wire (#10).
The J1 plug's #8 terminal is tagged as a "scan" terminal as well, so the # 12 wire should attach here, but my problem is where does the # 10 wire go? Did it piggy-back to the #8 terminal, or does it go to another terminal (the #1 terminal is a double line-26.5 VDC- and the #4 terminal is filled in and not used) ? Looking at the backside of the other terminals on this plug, i can't determine if any others may or may not have had another wire attached to them.
As I said, I do have the available manual for this box, but the schematics -naturally- do not show the wire routing between these two plugs.

Does anyone have a similar machine that they could look at and tell me which terminals on the white J1 plug on the left side of the CD player (looking into the cabinet) are double wired?
Thanks,
Dale

Hello dale,

Is this jukebox mmade by Sound Leisure of Leeds UK?
If it is I suggest you contact Sound Leisure.

http://www.slretail.co.uk/soundleisure/

Regards
Alan Hood
ami-man
UK

No, it was made by Antique Apparatus/ Rock-ola in California in 1994. Hopefully someone has a similar era box and can tell me which terminal (other than #1) on the CD players J1 plug has double leads going to it.

Dale,

I saw your post on Collecting Banter and posted a reply with image there. I hope it helps. If not, post reply and I'll see what else I can do to help.

Respectfully,

David

Hello Dale,

If it was as early as 1994 it may have been Rowe Ami parts in it rather than Rock Ola.
If you post some pictures we may be able to help you out.

Thinking about what you said on one of the other forums you mention a 30 pin molex plug to the CCC, it can not be Rowe Ami parts!

I would still post some pictures .

Regards
Alan Hood
ami-man
UK

Alan, and all,
He is talking about the "RockOla black (painted) system"--I do remember that cable, but not well enough to be of any help--
"RockOla" (aka "Antique exasperations") has made several different systems for their CD machines. Some of which are (NOT necessary in order) were:
"silver" un-painted), black, orange, red, and yellow--and of course, prior to buying the RockOla name, they used Rowe/AMi parts- Ron Rich

Ok, here are a couple of pictures!
The first shows the wiring harness with its three plugs: the cd player plug is the central white one (note the dangling wires!), the plug closest to that one is the 16 pin power source plug and the one with the warning label tied off near it is the 30 pin, P2 computer port plug.
The second, somewhat bleary picture is of the Rock-ola tagged CD player showing where the damaged J1 plug goes.
I have figured out where one loose wire goes (in the #8 terminal slot-a "scan" function), but the other is a mystery. It is a "power comm." wire and it HAS to piggy back on a terminal with another wire as all the terminals are occupied with the exception of the #4 terminal, which is blocked off.
Any help is GREATLY APPRECIATED!
Dale

Judging from what you have written, I would ASSUME that it must have connected to the "ground wire". Ron Rich

Terminals # 10 and #11 on the J1 plug going into the CD player are the chassis and internal ground wires. The mystery wire is a power communication wire that -I guess- relays data back to the computer. Would that be grounded too?

Incidently, there is an exact twin to my box on ebay right now. If it was a few hundred miles closer I could just drive over, open the cabinet, take a quick look at the plug and be done. I tried contacting the seller and asking for a good clear picture of the CD plug (you know, to help me decide whether or not to bid on it.....) but the guy doesnt answer emails.

Dale,

I had to dig deep to find out some things.
First, you are looking at the Mech Control PCB harness.
Second, here is the pinout:
1. 26VDC
2. "STOP"
3. "CANCEL"
4. KEY
5. Cam Sw. 1
6. 5.7VDC
7. "OFF"
8. "SCAN"
9. "DETENT"
10. Logic Ground
11. Chassis Ground

If you don't have a schematic to trace back these signals or cannot use process of elimination, let me know.

Respectfully,

David

Hi David,
I DO have the schematics for this machine, but they are useless. They dont show the pin to pin routing of the wires from the control computer up the wiring harness to the CD player.
On my 11 Terminal plug that attaches to the CD player, the one you mapped out, number 4, which you list as a "Key" terminal is empty. No wire, not even a terminal to attach one to. All the 10 other terminals are occupied, but I STILL have an extra wire coming from the computer - a "power comm" wire that must hook up to a terminal ! I know where it is coming from (#10 pin on the 30 pin control computer plug) I just dont know where it attaches.

I assumed "power comm." meant it was a "power communications" conduit, i.e. a data relay wire feeding info back to the control computer (as in automobile ECM usage), but maybe it means "power common" as in a ground wire??

All I need to know is which terminal on the large white plug -other than terminal #1- has a double wire going into it. The manual's schematics dont show it , but if anyone out there has an early CD4 machine they can open the door and look at...........................

"Key" indicates that there should be nothing in that hole, except perhaps a plastic plug, which would tend to block the plug from being inserted "backwards"-- Ron Rich

Ahh, so "Key" means a blocked off pin!
As Storther Martin would say- "What we have here is a failure to communicate!"
Admittingly, I learned what little I know about schematic reading in the auto repair field where we called that a "locator guide". Same purpose though, helping to align the plug on correctly.
Either way, on the schematic in my AMR-5-574 manual, it is simply marked with an "X", but there is no recieving pin on the circuit board and upon further inspection, it is filled with a dollop of silicone.
Please dont give up on me yet fellas, I'm learning!
Dale

Dale,
"Locator guide pin" is also used by some juke makers--but "key" is much shorter
Word of caution about that type of plug--if it's an AMP brand unit, and it has had any sort of "poor treatment" it will fail to make a good connection !
What needs to be done is, each pin must be removed from the housing, one at a time, and "re-formed"--and cleaned, prior to re-inserting it in the housing. Also, look carefully at the solder joints on the PCB--it's prone to "cold" (or "dry") solder joints--re-soldering is often needed. Ron Rich

Dale,

We have a winner!!

Going back to the schema, I found (at least on my copy) that you are referring to "Power Common", although mine only has one "m". This is the ground used for "power" voltages (+12VDC, 24VAC) as opposed to "logic" voltage (~+5VDC). This wire will tie into Pin 11 of P1 on your Mech Control PCB.

On this genre of Rock-Ola, the power supply used a center tap transformer for some of the "setup" (or primary) voltages. Especially the AC being delivered to the +5VDC circuit. For this reason, they may have "split" the grounds to reduce noise and adverse effects on the logic. I can tell you that this series has to have a properly phased and grounded 3 circuit outlet to work reliably. I have seen an ungrounded outlet cause the machine to remove credit, play wrong selections and cancel selections early.

Now, you know more than you bargained for... LOL

Respectfully,

David