DOES anyone know how to fix this code?Pcu's and dv's are not old.Thanks
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Re: SC 491
what is the model?Nobody is perfect.. -
Re: SC 491
Please supply the model number of the machine that is causing you this hardship, as it could be caused by several things depending on machine model.Press the GREEN button!!Comment
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Re: SC 491
Addendum: Put the model number in the title - always.“Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'” (Isaac Asimov)Comment
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Re: SC 491
This is what Goose's Guide suggests:
Drum/dev bias error - replace paper transfer unit Drum/dev bias error - replace high voltage supply unit Drum/dev bias error - replace drum unit(s) Press the GREEN button!!Comment
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Re: SC 491
High voltage power: Drum/ development bias output error
An error signal is detected for 0.2 seconds when charging the drum or
development.
High voltage leak
Broken harness
Defective drum unit or development unit
Defective high voltage supply unit
491 D
1. Check or replace the harness.
2. Replace the drum unit or paper transfer unit.
3. Replace the high voltage supply unit.Why do they call it common sense?
If it were common, wouldn't everyone have it?Comment
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Re: SC 491
Can't we just delete such time-waster topics if people aren't qualified enough to start threads with some kind of minimum informations we need in order to give support, like:
- model?
- what issue/symptome?
- is it permanent/sporadically?
- already performed measures?
- PM status of the machine (in case it might be relevant)
Maybe, after some public brainstorming, a mod can write a little guide and make it sticky somewhere so at least we don't need to teach pre-school basics and re-invent the wheel all the time. Maybe it's just me thinking that these insufficiant threads are a growing phenomenon.Comment
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Re: SC 491
[Symptom]
SC491 (High-voltage: Charge/Development: Output error) is displayed.
[Cause]
Drum (PCU + Dev. U) development unit is faulty.
[Resolution]
Replace appropriate drum unit.
[Symptom]
SC491 - high voltage supply and IOB are normal - no error found connectors or harnesses.
[Cause]
PCU Drum Stay Assembly not seated flush when closed - Yellow PCU not getting a proper drum ground connection.
[Resolution]
Disassembled Drum Stay Assembly (B2231300) - adjusted assembly so that it sits flush when closed and secured
The machine shows service call.
[Cause]
IOB is faulty.
[Action]
Replace IOB.
OR
Look for harness in transfert unit sometimes you can find a white wire broken.
IMAGE_046.jpgIMAGE_047.jpgComment
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Re: SC 491
This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from
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Paul@justmanuals.comComment
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Re: SC 491
Most people ask for help at Yahoo or Fixya first...where you can remain annonymous,ask your question and still leave just as clueless as when you went in.
I think people forget that the vast majority of replies here are coming from actual techs in the field....unlike Yahoo or Fixya etc.Comment
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Re: SC 491
You might want to consider checking the start date of this thread dude, and then perhaps browse the history and input of the contributor that you're so pissed off at for NO reason, and then tell us what makes you so damn awesome with your 4 big posts in as many years
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