Repairing an DEC LA424 Printer
go at aerodesic.com
Sun May 21 17:15:23 CDT 2017
I've inherited an LA424-A2 printer that had been stored for a while but
now has obvious problems. Powering up 'jogs' the paper feed motor,
flashes the three green LEDS on the panel through a rapid sequence, but
then it stops with the display showing what appears to be a fault code.
Unfortunately, one of the other parts that is failing is the LCD (16
char I think) that should be showing a fault code. It appears to be "CO
<something>" but I can barely make out the "CO".
Is this LCD use a traditional byte-wide interface and can it be replaced
with one of the current crop of cheap LCD modules?
Once I can see the fault code, I can begin to determine what else is
failing, though the manual doesn't seem to be much help on error codes:
they seem to be simple state-of-operation codes.
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