[GreenKeys] Weird 33 keyboard problem

[Don Robert House]

Charles,

Reads like something is binding.  Try watching the movement of the  
contact wires carefully while depressing known good keys and then the  
ones that are causing the problem.  Also look for any wires that look  
bent or might have a spring missing or loose on one end.  A couple of  
other associated items to check would be to make sure the shipping  
screw has been removed from under the base that screws into the frame  
of the typing unit.  Also check for proper adjustment of the H (trip)  
lever that trips the distributor.  Since the 33 is all wired in  
parallel odd troubles are the norm.  You might even have a contact  
out of position in the tape reader or the answerback drum contacts.

I never enjoyed working on 33s.  Good luck and 73

Don K9TTY


On 12 Sep 2007, at 11:56 AM, Charles wrote:

I'm having a weird problem with the keyboard on one of my 33s. In
short, some keys (but not all) don't output their shifted
character, just the non-shifted one. For example:

The SHIFT key works properly on numbers keys (but not the entire
top row, the - = won't shift).

base  1 2 3 4 5 6 7 8 9 0 : -
shift ! " # $ % & ' ( )   * -

Note that the : * key works but not the - = key...

The P @ and the ; + keys do work properly.

And finally K L   N M    , . /  entirely refuse to shift to the
expected    [ \   ^ ]    < > ?

but just print the unshifted character.

I'm having trouble figuring out what contact wire(s) could be
causing some characters to shift but not others... any ideas?

thanks
Charles

_______________________________________________
GreenKeys mailing list
GreenKeys at mailman.qth.net
http://mailman.qth.net/mailman/listinfo/greenkeys