-never heard anything like this, and i'm sure changing scanner nic will do no good. problem seems deeper than a bad nic.
i'd go for removing print cont. + scanner nic, and do a total reset, u020. (sounds like some memory-error.)
-> u020, new fw. if things still suck (like your black printouts with horizontal lines), change mainboard.
just to sum up: normal copying=ok, printing=ok, internal pages printout=crap, scan to mail/whatever=crap?
must be memory-something=new mainboard.
you also have 4 (?) 8 leg/pin e-proms on mainboard, but then you're better off changing the whole pcb.
i'd go for removing print cont. + scanner nic, and do a total reset, u020. (sounds like some memory-error.)
-> u020, new fw. if things still suck (like your black printouts with horizontal lines), change mainboard.
just to sum up: normal copying=ok, printing=ok, internal pages printout=crap, scan to mail/whatever=crap?
must be memory-something=new mainboard.
you also have 4 (?) 8 leg/pin e-proms on mainboard, but then you're better off changing the whole pcb.
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