Blair said:
The following are the facts:
1 The printer is working by itself OK Prints check prints
OK
2 The printer cable when installed in another PC belonging to a friend which
has an Epson printer which works perfectly indicates a "communication
problem."
So, to be clear... this is a parallel port to centronics cable, yes?
And it indicates a communication problem when used on a known good
computer and a known good printer? Do you know if the cable is
bi-directional or not? Obviously, something is wrong with this cable.
Which printer is your friend using?
3 The printer cable from the other friends working PC when installed in the
problem PC set-up shows the following
3a Using the Epson status monitor there is a red sign which says the
printer is idle
Also "There was an error writing to LPT1. The printer is not ready.
Make sure it is turned on and online.
3b Using the print command I get a large red cross against the icon
of the printer and a statement "out of paper"
It is possible something happened that damaged the printer port either
on the computer or printer side. My guess is that the cable failed and
shorted something on one side or the other. I would not "test" the
cable elsewhere, because it might damage another computer or printer.
Possibly something happened to the computer or printer port and damaged
the cable, hard to know which direction... did you have any severe
lightning storms, surges, or other surprises recently? Have you tried
any other parallel device in the computer port?
Have you checked in control panel to see if the parallel port is
indicted as working correctly?
4 The printer cable when installed in my system indicates a communication
problem
OK, obviously since the cable indicates a communication problem on a
known good computer and printer, and one that's unknown, the cable is
likely bad (bent pin, broken pin, failed pin to wire connection,
shorted wire, etc),
Since your printer doesn't work even with a known good cable, either
your computer's parallel port or the port on the printer is not working
correctly... is it possible a bad pin/socket on one side or other (bent
contact, dirty contact, etc?
You *might* want to try connecting a different printer with a known good
cable to your computer's parallel port, but there may be a risk of a
failure to the printer or cable if the ports are bad in some manner.
Unfortunately, you haven't done enough combinations of alternatives to
rule out something exclusively, but I can't vouch for the safety in
attempting to do so. I blew a computer power supply and some parts on
the mainboard of a Laserjet one many years ago by using an incorrectly
wired serial cable.
Art