Question about Xerox Phaser 8500/DN Printer

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Xerox 850 fault code 15.004.45

Thanks for your post about this problem, please send me the instructions
Randy Lewter LNSTUDIO@mac.com
L&N Studio 602 E Pryor St Athens, AL 35611

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First of all you will need Torx bits or drivers to remove the covers etc. I think mostly you will need a number 10 and 15 size.
First off you want to remove both side covers, there is one screw on the top back of the covers, and another on both covers, top front, you have to open the front paper path door to access the front screws. Then about the middle of the covers pull up and outward, they will kind of pop off, but thats fine, they have tabs on the bottom that can be pesky.
Remove the paper tray, the green maintenance tray and set aside.
Now remove the 2 green rails that the maintenance kit rides on. They both are held in by one screw. It will take some manupilating to get them out, but basically you push them sliightly back, inward and twist slightly until they come out. TAKE NOTE of how the leaf springs are on the rails, A hint when putting them back in, is to take some scotch tape and tape them on the side to keep them in place, You will see what I mean when you remove them. But its much easier to get the rails back in when those springs are taped to the side. And no worry about removing the tape afterward, I will have no affect on the machine if its left in.
Next, you look up and you will see a stainless steel curved plate. About 10 inches long and 3 inches high. There are 2 screws on the top of it that must be removed. There are 2 tabs on bottom, Once the screws are removed it just lifts out.
Now about midway up the paper path is the registration rollers. First, you have to go, ( looking from the front of the machine) to the left side of the machine, You will see a electromech clutch on a shaft with a 2 inch black gear with a belt attached. Remove the clip that holds the clutch on, slide off the gear and just let the belt drop in place.
Now, return to the front,The assembly is stainless steel, you will see a couple of rollers on it and some paper path actuators. There is one screw on the right side of that assembly that you need to remove, and on the left side, just by the bearing there is an "E" clip holding the bearing against the frame. remove the screw and the clip, Then move that transport CAREFULLY to the left and out. Be very careful to keep the 2 pieces together, there is a switch actuator that can be easily broken. So please take caution. On the right side, there will be a bearing that WILL fall out, and drop down into the paper feed area. Trust me it will do that. Just locate it and pick it up. When replacing that transport. I suggest, ( unless your considering suicide LOL) Put some white out or a little glue on the outside of that bearing when you press it back into the frame. Otherwise, IT WILL keep falling out and really try your patience. Just trust me on that one.
Now, look in the front , just above where the maintenance tray would go. You will see 2 screws, about 10 inches apart, They will be surounded by a beige/brownish plastic. Remove those 2 screws, they hold in the heater assembly you want to repair. When you remove those screws it will not yet come out, wiggle it a bit and look on the right side so you can easily determine the conectors, plugs you need to remove. Some have 1 some have 2.
Once you do that, slide that heater assembly downward and out. You will see the 2 lamps in there.
Take those little spring metal clips out,, replace BOTH lamps. Use some emery cloth to clean the contacts. Clean the reflector behind those lamps before replacing . That will make the heat transfer more efficient.
Once those are in , in reverse order reassamble. Just be cautious replacing that registration assembly so you dont break the black actuator.
It's really not hard, just takes some time. Give yourself an hour to an hour and a half. But that is your problem I guarantee it.

Posted on Nov 03, 2008

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