[comp.sys.apple2] //c serial port lockup

ART100@psuvm.psu.edu (Andy Tefft) (08/11/90)

Well, resetting the serial ports using the system utilities
worked for a little while in curing my serial port problems
but now they are locked up permanently. DTR is on permanently
and when the comm program is set to 2400 baud the send and
receive lights are both held high, so I KNOW somethging's really
wrong. I'm going to be out of commission for a whil. I'm afraid
the local apple dealer won't be able to do anything but a motherboard
swap (ouch). I can live without the serial ports, I guess, but
it's a pain not being able to use the printer.

jgieske@polyslo.CalPoly.EDU (John Erik Gieske) (08/20/90)

A similar experience happened to me.  I have an early Apple IIc, and I just
bought a 2400 baud modem.  I could see from the indicator lights that I was
sending and receiving data, but there was no output to my moitor.  After 
many phone calls, I was told that Apple recognized a problem with the IIc's
serial ports, and they would cover the charges for a motherboard replacement.
My local dealer was able to make the repair.  I was disappointed when this
did not releave my problem, and it was then I discovered that the IIc requires
a null modem cable.  I just thought you might be interested in hearing about
Apple picking up the bill.


John Gieske

INTERNET: jgieske@polyslo.CalPoly.EDU
USMail  : Sierra Madre #32B
          Cal Poly
          San Luis Obispo, CA 93410-2000
All opinions expressed are mine alone.