Question about Canon NP 7130 Black and White Copier

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Black Copies I have a NP7130 Canon copier. Copies are almost completely solid black. Drum Unit was replaced to no avail. Halogen lights do not seem as bright as I remember them to be. What should I check?

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It could be a bad voltage board, which is not supplying enough power to the lamp.

Posted on Jun 30, 2008

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Hi, My Canon 3245 Imagerunner is streaking.


Hello,
First, the streaks appears when copy from glass or adf, when printing or all?

Solution #1:
How many copies did you do from last drum changing? if over 80 000 copies, replace the drum unit.
-in case that streaks appears when copy and print

Solution #2:
If the streaks appears only if you copy from adf or glass, clean the glass and dry it out. Both glasses, narrow on left side beneath the adf/cover and glass for copy of original.

Solution #3:
If the streaks are wide and solid, with possible toner left overs, you need to replace fixing film.

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Why are my copies coming out solid black, even though my exposure lamp is still working?


A couple of possibilities. Basically if your exposure lamp is coming on, the light is not getting all the way to the drum that is in the toner cartridge. It could be you have a mirror out of place. When the exposure lamp comes on, the light is reflected off the original and then off a series of mirrors until it gets to the drum. If one of the mirrirs has been knocked out of place, like due to a recent cleaning then that would cause black copies. The more common cause would be the drum protection "gate" that is on top of the toner cartridge is closed and thus blocking any light from getting to the drum. You can slide out the toner cartridge and look on top. There is a gate or panel that flips open to be able to see the drum. This gate must be opened when installing the toner. Also it is possible to have a bad cartridge but that rarely causes completely black copies.
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I have a black solid streak on my Canon D320 copies


Change the OPC drum cleaning blade and clean used the vacuum cleaner the development station.

Dec 01, 2009 | Canon imageCLASS D320 Digital Copier

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Canon NP6412 Blank Copies


If copies are totally blank then it most likely is not the drum. It is transfer to the drum. A charge wire is most likely the cause of these type symptoms. Not easy to do if you never have before. Exposure lamps being bad give a solid black copy symptom so I am pretty sure thats not it either. You have a charge corona inside that is probably what your issue is. If you know someone who is a tech they might restring it for you as a favor or take the unit to a local dealer to see how much they would charge to restring.

Hope that helps
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Sharp Z-70 copier - print outs are mostly black?


Check the dum cleaning blade. Usually the blade becomes weak and does not clean the drum properly. You can either replace just the drum blade or replace the entire drum cartridge.
If the copies are coming out solid black, then either the exposure lamp or the thermal fuse for the exposure lamp is/are burned out.
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Nov 19, 2008 | Office Equipment & Supplies

2 Answers

Xerox xc1020


is it a printer/copier?
yes....do both prints and copies off the glass come out black?
yes...probably a problem in the drum/ CRU area
No- prints OK but copies black lift the lid and watch the exposure lamp...does it light up? does it move? Both of these scenarios would usually bring up a fault code, so I would still be inclined towards the drum unit.Pull the unit out and make sure no paper has sneaked up between the drum and the exposure slot, or even into the drum unit. another cause could be a broken corotron wire (very thin wire close to the drum usually behind a grid (charge grid) If it is a customer replacement drum unit (CRU) the charge grid will be built into the unit and will require the whole thing replacing.......

Dec 27, 2007 | Xerox CopyCentre C20 Black and White...

1 Answer

NP7130 drum problem


hi im jules_09,you should not use compatible consumables for the copier sometime np7130 copier are nasty specially with opc drum,if the copy is blnk the problem is in the high voltage unit or in the transfer unit and drum charge unit you might have the wrong process replacing the drum.re install the drum then try it again .

Dec 02, 2007 | Canon NP 7130 Black and White Copier

2 Answers

All back copies and no light from the exposure lamp


Yes, it sounds as if the lamp has blown. These are halogen lamps on the older models and run over $100 to $150 or more depending on the make. Usually if you take the platten glass off, you can slide the scanner over and see where the screws that mount the lamp end contact down are. BE SURE TO UNPLUG THE MACHINE BEFORE ATTEMPTING TO DO ANYTHING, ESPECIALLY IN THE SECTION, OR ANYTIME YOU TAKE ANY COVER OR PANEL OFF!!!!!!!!! The halogen lamps use 120v ac and will bite! They are very delicate lamps, and you cannot touch them, or the oil in your skin will cause it to blow again...an expensive mistake. make sure the contacts are in place well before you finish. And make sure to check your existing lamp on a meter for continuity... to mke sure it is blown and not just a bad lamp board. Yes, it's all very tricky and kinda dangerous, that's why we charge "so much" in the service industry.
Good luck, and you may find it cheaper to just replace the machine with a lesser make from a local dealer or office supply company.

Nov 18, 2007 | Canon NP 7130 Black and White Copier

1 Answer

Canon NP7130 copier


Make sure that the black plastic arm just to the right of the gray drum release handle is in the proper position. This arm sometimes gets knocked out of position when engaging the tube of new toner. When the copier is clammed closed, this will sometimes come down on the right side of the post on the bottom front cover. This will move the developer far enough away from the drum to make blank copies. Hope this helps.

Nov 12, 2007 | Canon NP 7130 Black and White Copier

1 Answer

Replace drum


hi im jules_09.at the packaging of the drum has a instruction that will show you the process in replacing he drum or just open the front door of the copier the drum unit has a lock for you to lit up just a small lever or 2 lever.after that you can easily full out the drum.just remember just dont let the drum before be expose to light it is sensitve to mit.5minutes is enough time for it to be expose morethan that the drum becomes deffective

Nov 05, 2007 | Canon NP 7130 Black and White Copier

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