I consolidated Tony's and Dwight's comments onto one
post... thanks to both for your comments so far.
>Ah... Do you hapeen to know if the original position
of the brush holder
>was way out? If so, then it's possible the previous
owner tried to
>compensate for that using the 'rangefinder'
adjustment on the RX module
>(the slider + scale near the receiving magnet). Have
you treid the affect
>of this adjustment?
I tweaked this last night to see what would happen,
but there was no improvement. But it was an
interesting exercise anyway.
>You can elminiate the keyboard by trying the reader.
If the reader works
>perdectly, then the keyboard must be the problem. My
guess is that it
>won't, though. You can open the tope of the rrrreader
and hold the tape
>sensor down by hand. That will read continual
Rubouts. Or hold down some
>the pins too to get different characters. Of course
if you have some
>correctly punched tape, use that.
Good idea - I re-connected the reader and tried it.
The codebars track exactly what the sense pins read,
so that would point to a keyboard problem.
>Hang on... What happens if you press a (printing) key
-- say 'A' and
>REPT. Do you get consistently correct punching? What
is printed? Always
>the same (incorrect) chaaracter? (if so, which, and
where is it on the
>cylinder). A few different characters (again, where
are they on the
>cylinder)?
Considerable improvement after working over the
carriage again. Many of the characters now print
correctly using the REPT workaround. Some examples
that don't:
Prints
Typed As
----- ------
Q S (consistently)
8 : (consistently)
9 ; (consistently)
X P,Z
E E occasionally C
W W occasionally G
A C
Haven't had time to analyze these yet in terms of
where they lie on the typewheel.
>Besides checking the clearence, it might be a good
idea
>to remove the keyboard and watch things while hitting
>a key. You might see something a little sluggish.
>You'll need to manually reset it after each
keystroke.
>It is a lot easier to see things when the machine
isn't
>jumping everytime you hit a key.
>Dwight
I'll try this again. I am sure that this is keyboard
related.
List of other things to fix:
dashpot - carriage always sticks at l/h side.
reader doesn't advance tape - presumably it should.
Regards,
Dave
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Received on Thu Nov 14 2002 - 13:54:00 GMT