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Re: copys to light
Open the right side door. About midway down you will see an opening with a very fine wire in it. That is the wire responsible for transferring the ink from the drum to the paper. Dampen a Q-tip in some alcohol, and gently clean it. The other thing to try is cleaning the optics. UNPLUG the machine, clean all the mirrors and lens. The other issue could be a dirty laser which you can clean the window to, by removing the drum and looking for the slot where the laser shines through. Removing the laser and cleaning it totally is not an easy thing to do. When the optics on a digital copier become dirty it has the opposite effect of dirty optics in an analogue copier. When the optics are dirty, the image appears dimmer and therefore turns the laser on at less intensity causing light images.
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check your OPC drum life, if you have a poor quality with a new cartridge installed (light copy, dirty copy) the opc drum must be replaced, check you machine counter if you have reach 100k copies you need to replace the drum, if you are using a new OPC DRUM, you need to clean the machine, you have to call for service because there is many parts that muat removed to clean properly.
New cartridge means that the transfer corona is probably going out (or the controller board is sending wrong voltage) because it charges the paper to pull the toner off of the EP drum. This might be replaceable but you have to check with HP about buying one. I did not find them for sale on line but some models have them for about $25.
Try to set the darkest posiblle in user display and check the copie. If its ok you must try to clean benith the copy glass and scaner sensors. If didnt help try to replace the drum, and if not better clean laser unit.
How many copies do you have? By the book the drum life is 75000 but it goes up to 100000 copies.
If your copies have "unbaked" toner all over it, you need to change fixing film unit.
The drum, developer and other parts have a certain life that they are good for. After they go beyond that cycle they can start to run dirty, use alot more toner, basically give you problems until a complete maintenance is done. The drum can have permanent light fatigue, even though they look good and in alot of cases one side will start to get darker than the other. You should get an estimate of what it'll cost to have servicing done and compare that with the cost of a new or refurbed machine. If the copier is very old, it might be worth it to get a new one. Good luck, please rate this if it helped you. Thanks
There is a chip on the back of the drum unit that keeps count. It cannot be reset. You may try to find a replacement chip on the internet. I would recomment the rechargerstore.com They have good products. I do not know how long your drum will last, you may end up having to replace it for copy quality problems at some point.
First place an original on glass and make a copy -- mark #1. With that same original on the glass, move the exposure all the way light and make a copy -- mark #2. Again with the same original on the glass, move the exposure all the way dark and make a copy --- mark #3. Place #1 in the middle so the the copies read --- #2, #1, #3. The #2 should be the lightest and #3 being the darkest. If #2 is darker than #3 you have a developer problem and you need to call for service. If #1 and #2 are bad and #3 is a good copy your machine probably just needs a good cleaning, mainly the optics and charge units. If all 3 copies are still poor with the speckles, your are looking at the PCU ( photo conductive unit) also called the drum unit. You can order this unit online -- it is a customer replaceable item.
Older Sharp AL copiers will go on working with the drum light blinking, but yours will not. Newer models do stop working when the drum reaches its limit. Now keep in mind that just as almost every copier in the market, these units count the copies they make in order to determine toner & drum life. So it is possible to reset the drum counter if you inspect the unit and see no markings or visible wear & tear. Also keep in mind that the toner & drum units have been the same for all AL units through time, so there are plenty of good replacements in the market (not recycled, but re-manufactured or brand-new compatibles).
As for your unit, if the drum is Sharp original or a good quality replacement, you should have to do nothing after installation, for the internal chip in the drum will tell the copier to reset the counter and begin working automatically. However if that is not the case, or should you want to reset the counter on your existing drum, this is the correct sequence to do so.
Identify the buttons used for adjusting exposure (darker or lighter copies), amount of copies, clear copies and start copying.
Now press the following sequence of buttons: [CLR], [EXPOSURE], [CLR], [EXPOSURE]
Your unit should turn off the numbers in the panel.
Now press 24 as if asking for 24 copies and press [START].
Press 07 as if asking for 7 copies and press [START].
Your unit should restart by itself and start working normally.
This Machine needs a copy cartridge. Replacing the toner will not clear it. The copy cartridge is the drum unit which is why the drum light is on. With the new copy cartridge a chip on the cartridge will reset the counter and clear the "CC" and the drum light. If you cant find this I can send you one. I believe on this model it is user replaceable.
If it is a real genuine Brother toner. Not a reman. You may also need to change the drum. If you have a user manual, it will show you where the drum life setting is in the menu structure. Make sure the little glass window inside on the right is clean so it can read the toner level. Make sure the toner save feature is turned off.