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6350CXI Burning Smell & Not Working

Posted on 2000-02-26
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Last Modified: 2013-12-15
Has any one had this kind of problem?  I have had two 6350's in the last two months to display similar problems.  I have other devices hooked up to the same UPS and distribution box and have had no problems with them so I don't think it's my power.  Hp is going to replace the scanner again but I wonder if there is a basic problem with this model?  HP says no.
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Question by:fredmaillet
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by:briancassin
ID: 2561304
You cannot plug periphrial devices into UPS... such as scanners, tape backups, digital camera's and printers... There is no reason why you should have it in an UPS an UPS is for keeping the power on to your pc after the power goes out. Your UPS is destroying your scanners....

here are two things that can happen

1. The red light on your UPS is on signifying a ground fault which means there is a problem with the house wiring it is either not grounded properly or it has reverse polarity...this could short out electronic devices.

2. Scanners and other periphrial devices should nto be plugged into surge protectors UPS, or power strips what this does is increase the amount of resistance on the line and drops the voltage thereby the unit is straining to get the proper voltage it needs to operate... kind of like your car and having a clogged fuel injector/... it doesn;t run very well

so to resolve this issue I would plug the unit direct to the wall do not plug it into an ups or power strip/..... also on a final note if you do not have 3 prong outlets in your house get them because your UPS and so forth will be useless without a 3 prong outlet it is what is considered a floating ground since you use an adapter to turn it to from 2 prong to 3... in other words instead of lightning hitting the house and grouding out at your main junction box it grounds out at your electronic devices.
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by:fredmaillet
ID: 2567398
I am rejecting this answer for two reasons.
1.An UPS unit is not a ground fault protection device per say. It serves to maintain the power to any equipment that is plugged into in the event that the power should fail. It is a battery backup unit. As such it would protect the scanner from suffering jolts of power from the power failures.

2.It does not answer my original question. Has anyone experianced similar problems  with a 6350 scanner.
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briancassin earned 0 total points
ID: 2568621
fredmaillet,

If you have an APC brand UPS on the back of it there is a red light which is a ground fault indicator (check your instruction manual) your model may not have it but to my knowledge all APC model UPS have this red light which they call a ground fault indicator.   Like I said before it signifies if the ground is working properly it also signifies if you have reverse polarity or what not I had an APC 450 UPS I am very aware of what UPS do. UPS do have surge protection built into them usually unless it is a very inexpensive UPS (a no name brand).

2. Since this topic area (HP Scanners opened)No one else has had this problem nor would it be very common in my opinion so in response to number 2 it would be no.

like I said before that is not common at all maybe you got into two bad units but like I said I would check out all the things I listed beffore assuming it is just the machine it is more likely the enviroment you are putting the machine in i.e. electrical outlet, UPS etc...
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