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CED Digest Vol. 5 No. 47  •  11/25/2000

Date: Sun, 19 Nov 2000 18:32:29 -0800
To: digest@cedmagic.com
From: Tom Howe <ceds@teleport.com>
Subject: RE: Front Panel Buttons Not Working on J/K Player

At 7:07 PM +0000 11/11/00, Carl Klitzke wrote:
>Recently, my SKT400 player stopped functioning.  I found out that the cause was
>that the metal contacts had come off the ribbon cable that connected to the 
>front buttons.  I am not very good with those kind of cables, so I was hoping 
>to bypass the front buttons altogether and hook some different buttons from 
>radio shack or something.  Does anyone out there know the pinouts for the 
>bundle of wires that go to the front panel for player control (reject, pause,
>etc), so I know which wires go to what button?

The solution to this could be as simple as just plugging the metal pins from 
the front switch assembly back into the nylon jack assembly inside the player. 
If you've tried that and the front panel still doesn't work, make sure the 
metal pins aren't offset to the left or right by one pin on the nylon jack, as 
that would prevent the essential Ground pin from making proper contact. If 
neither of these options fix the problem, here's the pinout from left to right 
looking down into the player with the front of the player facing towards you:

1 Visual Search Forward
2 Visual Search Reverse
3 Audio A/B
4 Reject
5 Pause/Play
6 High Speed Scan Forward
7 High Speed Scan Reverse
8 Ground

it's highly unlikely for the front panel switch assembly to fail completely, 
as that would happen only if the Ground line failed in the short space from 
where it leaves the front panel and meets the nylon connector. If such a 
failure occurs, it can be fixed by soldering a small length of jumper wire 
around the break. A more likely failure is for a single switch on the front 
panel to stop working.

Since this is a 400 player, the inoperative front panel could be due to a 
failure on the PW6100 "sandwich" circuit board inside the player and have 
nothing to do with the front panel itself. To test this, connect pin 8 of 
the nylon connector to ground, then with a disc playing, short pin 5 to ground 
with a light tap. Each time pin 5 is shorted the player should toggle into or 
out of Pause. If this fails to happen, you'll know there is a problem 
up-circuit from the nylon connector.

--Tom

------------------------------------------------------------------------
To: digest@cedmagic.com
Date: Sat, 25 Nov 2000 22:30:27 -0600
Subject: ced collecter
From: Mary E Saunders <mess27>

Hi 
I love my players I have 3 but I am like others stylus are hard to find ,
but I find that cleaning them makes them last longer ,and making sure no
dirt is on the stylus before putting it back in. This will cut down on
the alot of the skipping. I have a collection of about 400 disc. and I
replace my own driver belts this will also keep them running longer. mess

------------------------------------------------------------------------
Date: Sat, 25 Nov 2000 23:27:42 -0800
To: digest@cedmagic.com
From: Tom Howe <ceds@teleport.com>
Subject: CED Article in Nov/Dec Issue of E-Gear

Hello All:

The bimonthly magazine E-Gear began publication about a year ago, and the last 
few issues have had a "YesterGear" column about past electronic technology. The
column in November/December 2000 issue on sale now is about the CED system. 
This article may also be viewed at the E-Gear web site:

http://www.e-gear.com/issues/1100/1100yestergear.shtml

--Tom