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1. Check out the photoreceptor belt for flaws by laying the cartridge down with the belt exposed on top and the handle facing towards you. Rotate so that the belt is traveling away from you.
The OEM PR Belts are rated for a good 80,000 copies. The cartridge’s cycle is 20,000 or 25,000 copies (depending on the model of the machine) so if the belt is not physically damaged during handling, it can be reused. Dents in the belt’s surface will show on copies as will any but the most minor of scuffs. (the image area is the central eleven inches so scratches near the edges may not effect copy quality). If in doubt, it pays to keep a test machine handy. When testing, always run at least 3 copies to see all parts of the belt’s imaging area.
2. Remove the eight phillips-head screws from along the right and left sides of the photoreceptor belt.
3. Lift the belt drive assembly out of the cartridge. On the underside are three items to be removed (see illustration #1).
Tip: I found that if I lift from the drive gear end near the handle, I can stand the assembly up as if it were on hinges so that it rests easily on the back edge of the cartridge shell.
First, a scorotron (metal grid) is suspended across the belt. Release by pressing on the white anchor on the left.
Second, on the right side, remove a foam edged clear plastic shield. taking notice of how it will go back on.
Third you’ll find a piece of foam on the right side about half way down. Pull it out.
Place these three items safely to the side. Place the belt drive assembly aside safe from exposure to light and dust.
WARNING: It would be a good idea to wear a dust mask for steps 4 through 7 to avoid inhaling air-borne toner dust.
4. Next you’ll separate the cleaning assembly and the corona assembly from the cartridge shell.* This is done by first releasing two clips located under the strap like handle (see illustration #2). Cut any tape along the front seam. Then use the tiny flat-head screwdriver to lift the cleaning assembly from the middle of the rear side. Lift the cleaning assembly out and place it aside. The narrow sponge gasket which lines the reclaim compartment should be kept intact if possible. Next the corona assembly can be lifted out.
Tip: There are a few loose pieces to watch out for which will fall out easily (or get sucked up during vacuuming). These include the two fuzzy pieces located at either end of the cleaning blade (refer to illustration #4), the two corona wire end covers, and the plastic actuator button (see step 5 below). Remove these items.
* Note:On older cartidges, the corona & cleaning assemblies came in one piece.
5. From the cartridge shell remove three items. First a long white plastic piece near the front end (handle end) lifts out. Second a long foam sponge piece. Third a plastic actuator button is located near the front right corner.
(see illustration #3)
6. Empty the toner from the reclaim comartment. Vacuum the cartridge shell thoroughly and follow up with a toner dust cloth. If the toner has fused into clumps, chip it away with your screwdriver. Some residue left in the reclaim is acceptable as long as it is not loose.
7. Next clean the cleaning assembly (refer to Illustration #4) taking care not to damage the recovery blade (you may find it easier to remove the mylar recovery blade and replace it after cleaning). Replace the cleaning blade (two screws) and apply plenty of starting powder.*
*Note: On older cartridges, the blade had no metal assembly. It simply slid into place.
8. There is a long narrow foam strip positioned before the cleaning blade. Remove it and discard it. You will need to tape over the holes under this abrasive strip (use tape on the inside of the reclaim) to avoid having toner leaks.
Note: The purpose of this strip is to limit the life of the photoreceptor belt.
9. Clean the corona assembly. Pay special attention to the corona wire. If the wire is very loose or broken, replace it.
10. Locate the counter on the underside of the corona assembly. Hold the assembly so that the counter is on the right corner nearest you
(see illustration #5). With your left thumb hold down the white lever which raises the magnet. Then with your right thumb turn the black gear closest to you down (clockwise). Use your thumb such that when the far black gear is freed up, it will turn as well (but do not force it). When the textured square on the far black gear faces directly forward and the white cam under the magnet is held down, the counter is properly reset. Release the magnet lever (the magnet should be face up in the down position).
Tip: Once the counter is reset, jiggle the far black gear to make sure it is fully reset. Sometimes the gear is still 'on the edge' so to speak and can jump back to the unset position with a slight bump (or after a few copies).
11. Replace the white plastic piece, the sponge strip, and the plastic actuator piece as you found them in the cartridge shell.
12. Put the corona assembly and the cleaning assembly (with the foam gasket) back in place. The two clips under the strap like handle can be re-secured. The two should sit rather flat... they should not appear buckled in between. Replace the two fuzzy pieces and the two corona end covers.
13. Now take the belt drive assembly and stand it on the end which housed the foam edged clear plastic shield. Note that the belt has a small square hole at one point along the bottom edge. Near the center of both the current top and bottom edges find a clip (refer to illustration #6). Release each clip so that the drive assembly will fold in half. Lift the photoreceptor belt off of the drive assembly very carefully. If the belt snags or gets hung-up it may kink or dent the photoreceptive surface. Place the belt aside, away from bright light.
14. Pull apart the two halves of the belt-drive assembly and clean them thoroughly. Note that the rollers can fall out of place.
Tip: If you intend to re-use the old P.R. Belt you may want to wipe the inside of the belt with a dust cloth. Too much toner inside here can cause the belt to slip on its rollers (Results in a U7-1 code).
15. Re-attach the two halves of the belt-drive assembly and stand the folded assembly on its more stable end with the drive gear up (so that it stands straight). Slip the photoreceptor (used or replacement) over the assembly so that the square window is positioned on the bottom. Straighten the two halves such that the belt is centered on the rollers until both top and bottom clips can be clicked into place. Rotate the belt drive, being certain that the belt turns freely without rubbing along either edge.
Tip: If you are using a replacement belt, use plenty of starter powder particularly if the belt is a generic brand (from my experience they tend to be a lot softer and more vulnerable to scratching). Another limitation of the generic belts is that while they work well in most models, they produce a very dark copy in the 5328’s.
16. Replace the clear plastic piece with the spongy trim, the foam piece, and the scorotron as you found them on the belt drive assembly.
17. Lay the belt drive assembly into place (scorotron side down). Turn the drive so that the belt travels away from you (with the handle facing you). If the belt does not move smoothly do not force it, try more starting powder on the blade and belt.
18. Replace the eight screws.
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Britt Horvat
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