mp 501 sc543

[rbwright]

anyone have a 501 with an unresettable sc543? have replaced fuser, ps pcb, iob, ricoh wants me to start replacing harnesses, which never works

[LNorris]

Re: mp 501 sc543

Did you replace the fuse and reset it?

[davel]

Re: mp 501 sc543

was it a new fuser or just one from another machine, new one will have reset fuse in it.

[rbwright]

Re: mp 501 sc543

was it a new fuser or just one from another machine, new one will have reset fuse in it.

New fuser. Don't see a fuse

[GIUBOSS]

Re: mp 501 sc543

if you replaced the new fuser and the logic board but unsuccessfully I would check the power board

[rbwright]

Re: mp 501 sc543

if you replaced the new fuser and the logic board but unsuccessfully I would check the power board

I have replaced the ps pcb

[Phil B.]

Re: mp 501 sc543

after replacing the fuser did you go into SM and reset the code?

[rbwright]

Re: mp 501 sc543

after replacing the fuser did you go into SM and reset the code?

seriously?

[davel]

Re: mp 501 sc543

From your response I presume yes, you did do 5-810 as in the manual.

[Phil B.]

Re: mp 501 sc543

seriously?

yes I am... have went behind " experienced techs " that did not do that

[rbwright]

Re: mp 501 sc543

yes I am... have went behind " experienced techs " that did not do that

ok. lets pretend after 30 years Im getting the hang of this job. ive done what my experience has taught me, ive done what the manual says, ive done what gooses says, and ive done what ricoh said. anyone have anything productive to add?

[guitar9199]

Re: mp 501 sc543

Just for grins, have you tried replacing the center Thermopile?

[DRichard]

Re: mp 501 sc543

ok. lets pretend after 30 years Im getting the hang of this job. ive done what my experience has taught me, ive done what the manual says, ive done what gooses says, and ive done what ricoh said. anyone have anything productive to add?

Have you tried turning the power off then on?


Sorry...I just couldn't resist.


It sounds like you've tried everything. I really don't have anything constructive to add.

[adoug]

Re: mp 501 sc543

I would change the fuser connector block on the device cause it sounds like you've ruled everything else out mate

[keithxxiii]

Re: mp 501 sc543

Hi there,

How about a backup of the NVRAM then do a reset?
Let it run.. and see..

You still have the luxury of restoring the NVRAM data