Hi,
suddenly my printer Epson LQ 300 is only printing garbage characters. What could be the reason.
I am in RH 7.3. I went to DOS the same, only garbage printing.
There are no error messages. Starting LPD says OK. Lprm, lpq etc function normally.
Running the printer self test performs flawlessly, meaning the printer does work. I checked all the cables, can't find anything wrong.
Any ideas, help?
Well, if the problem occurs with DOS as well as Linux, that certainly suggests it is not a Linux problem. There are a couple of things to do before you buy a new printer, though.
1. Have you power-cycled the printer? If not, do so, just in case something caused a transient change in the settings. Leave it off for a minute or so.
2. You say "I checked all the cables, can't find anything wrong". Checked *how*? Visually? That wouldn't catch a single broken wire, which would be enough to turn good signals into jabberwocky ... and could easily happen if the cable is bent sharply at either end (I've never actually seen this with a parallel or serial cable, but I have seen it happen to VGA cables). The only real way to test for a cable problem, unless you are better with a VOM than I am, is to substitute another cable and still see the problem (or to use the cable in a different setup and see no problem there ... even that is not a *completely* certain test, though).
3. You probably want to ask for help on a support list for the printer, not a Linux list. There, the question to ask is if there is some persistent change to the configuration that can occur accidentally ... stay in NV RAM or whatever.
4. Any chance that you made a BIOS change to the port (you don't way if this is a parallel, serial, USB, or LAN/Ethernet setup, so I can't be more specific than that ... though I suppose you use of DOS implies either parallel or serial)?
Were I to **guess**, it would be that you missed a bad cable. Only a guess, though.
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