Repairing and Rebuilding the Print Cartridges for the WC-5945/5955 and the new B8045/B8055/B8065/B8075 & B8090
The new AltaLink B8090 family uses an extremely similar drum/developer cartridge as its predecessor models (WC-5945/5955), only with a different CRUM chip.
B80909 Drum Cartridge
We did cover the rebuild procedure of the upper half of the 5945 cartridges back in June of 2015. So let’s revisit these, since the same procedure will work on the new B8090 cartridges. We’ll also go a little deeper and cover the developer material replacement end of things.
The WC-5945/5955 print cartridge is sold under the part number 013R00669 (13R669)., and has a stated yield of 200K according to the machine’s brochure. There is a new family of models in the style which uses an extremely similar cartridge (same drum, blade, etc., but a different CRUM chip): the AltaLink B8090 / B8075 / B8065 / B8055 / B8045 use 013R00675. These cartridges have an upper half which contains the drum, blade, charge roll and a cleaning roll (a white foam roll). The lower half has a developer station including an ATC sensor (Automatic Toner Concentration).
Now let’s explore how to separate the upper drum/cleaning half and the developer station. This can get pretty messy, so make sure you are working over a drop-cloth. One notable change from the previous version of this article: it is easier to handle the drum without it falling over and getting hurt if you turn the whole unit upside down before removing the white drum/mag roll bushings.
To complete these steps, you’ll need a Torx T-10 safety driver bit (T10S).
Photo #1: CRUM chip location
1. Replace the CRUM chip behind the right side of the front-end cover (1 screw – Torx T-10, see Photo #1) (CRUM chip part # B8090CN or 5945CN)
Photo #2: Rear End Cover
Photo #3: Front End cover
2. Remove the rear end cover (2 screws and release one clip on your lower left, see Photo #2). Take care that the white drum/mag roll bushing does not slip out until you’re ready, or else the drum becomes loose and can be easily damaged. Also, watch over the cleaning auger coupling as it will “pop” off the auger when you remove the cover. Keep the small white coupling handy, as you’ll need it for turning the mag roll later on.
Next, remove the front end cover (2 screws, see Photo #3).
Photo #4: Inner Front Cover
3. Take off the front inner plate (3 screws, T-10, see Photo #4). Be careful that both the front and rear white plastic drum/mag roll bushings stay in place.
Photo #5: Make sure this contact maintains the ‘D’ shaft’s position at all times. As it is critical to the magnet angle inside the Mag Roll.
4. Very gently turn the unit upside down. Extract the white rear drum/mag roll bushing. Hold up the front end of the developer station as you extract the front drum/mag roll bushing. Caution: there is a metal contact with a D-shaped hole, which fits over the front D-shaft of the mag roller. This D-shaft must not be allowed to rotate, as it is designed to be fixed in place by the contact. This piece determines the angle of the magnet inside the mag roller and must not change position (Photo #5). You will want to remove the contact from the D shaft only for a moment: slide the drum/mag roll bushing off and then immediately put the contact back on the D shaft. The developer station can now be lifted off.
Photo #6: Blade, Charge Roll, & Cleaning Roll
5. The drum with its bearings can now be lifted out of its cradle. This exposes the charge roll and drum blade (Photo #6)
6. The charge roll can now be replaced; use a little bit of conductive grease on the plastic cradles the charge roller sits in. The white foam roll just behind the charge roll is the charge roll cleaning roll. It comes out easily at this point as well.
Photo #7: DV Station Top Cover Removal
7. Finally, you can remove the drum cleaning blade (2 screws) and gently vacuum out the waste toner auger behind the blade. Be very careful not to hurt the mylar recovery blade.
Photo #8: DV Station Top Cover Removal
Prepare to remove the developer station’s top cover. There are two screws on the side of the unit (one at front and one at the rear end, Photo #7). There are also two springs to release from the toner dispense shutter. Then there are 3 clips (two shown in Photo #7, one in Photo #8).
Photo #9: Spring Support from rear of Top Cover
Release the metal contact at the front end of the DV station from the top cover (continue to keep the D shaft retained by this contact piece). You can now lift the front end of the top cover, pivoting it up so it hinges at the rear until its two indexing pins come out of the holes in which they are seated. When it comes off, watch that you don’t lose the small black plastic anchor/spring support, as it will now fall right off (Photo #9).
Photo #10: Watch the position of the Mag Roll’s Keyed Bushing.
8. Dump the old developer out of the unit. There are three things you must pay close attention to:
- Keep the Mag Roll’s Keyed Bushing in-position at all times. (see Photo #10)
- You can use the white Mag Roll Drive Coupling but be careful not to lose it.
- Continue to keep the metal contact at the front end on the ‘D’ shaft of the Magnet, and also on its plastic retaining pin.
With those three things in mind, tilt the DV unit vertically so the rear end points downward over an appropriate waste container and dump it out. Then, turn the mag roll and brush it off with a soft bristled bottle brush or paint brush to clear the surface. Turn the mag roll about ¼ turn and brush it off again—you will need to do this about 40 times before you see less and less of the mag roll being covered with developer material.
Photo #11: DV Recycling Screen and narrow cap above it. Both pieces are loose so be careful not to lose them.
Eventually, it will all be brushed out. This part can be time consuming, so be patient. You should not use a vacuum to clean the unit out for two reasons. First, the ATC Sensor (Automatic Toner Concentration Sensor) is static sensitive and a vacuum could blow the sensor. Second, there are some tiny parts which could get sucked out easily, like the small rectangular-shaped screen piece with a narrow cover over it near the rear end of the unit. This piece is located in the “wall” between the augers of the developer mixing area. Be careful not to lose them or accidentally dislodge them with the brush (Photo #11).
9. Once all the old developer has been dumped and brushed out, you can fill the top cover with new developer and install a peel-and-stick developer pull seal to keep everything in there until the customer pulls the seal at the time of installation.
10. Reassemble everything with care.
That’s it, you’ve got it licked!
