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Minolta® SP-101, Epson® 7000/7500, NEC 90/95 Remanufacturing Instructions...
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Minolta® SP-101, Epson® 7000/7500, NEC 90/95
Reference Information:
OEM PN:
OEM Yield:
Minolta 1000/SP-101
0910-802
8,000 prints
Epson EPL-7000/7500/8000
S051009
8,000 prints
NEC Silentwriter Models 90/95/95fx/97/97fx
20-055
8,000 prints
Recommended Tools:
Approximate Remanufacturing
Small flat head screwdriver
Time: 35 min.
Phillips head screwdriver
3/16 diameter steel dowel (14-16 length)
Razor blade
Pin puller
Operational Theory:
The printer uses an electro-photographic process. The drum charge unit
applies an even, negative electrostatic charge to the OPC surface. This negative
charge dissipates in the areas where the laser beam touches the OPC surface.
As a result, the OPC surface retains an electrostatic latent image. The negatively
charged toner particles on the developer roller sleeve are transferred to the
electrostatic image on the OPC surface. As the paper is fed between the OPC
drum and transfer charger, a high uniform charge is applied to the back side of
the paper. The negatively charged toner particles are attracted from the drum to
the paper. After the transfer has occurred, the wiper blade scrapes off any toner
remaining on the OPC surface. A waste toner collection auger then transports
the toner into a waste toner box (capacity: 100g). The paper with the toner image
passes between a heat and pressure roller where the toner is permanently
adhered to the paper.
A toner empty sensor in the imaging cartridge signals the CPU in the printer;
when the toner hopper is almost empty, the printer displays the message OUT
OF TONER (EPL-7500) or TONER LOW (EPL-7000). The imaging cartridge
has up to 25 prints remaining.
Figure 1
1. Cut the paper instruction label on the cartridge shell. Remove the two (2)
screws securing the waste bin to the toner hopper (Fig. 1).
2. Remove the plastic cover over the fill plug (1 screw).
3. Remove the large gear (1 screw).
4. Remove the drum axle hubs (2 screws).
5. Remove the toner hopper plug and clean the toner hopper. Make sure to
completely remove all old toner.
Figure 2
6. Remove the magnetic developer roller (2 black clips). Do not to touch the
sleeve with bare hands and be careful not to scratch the surface of the sleeve.
Use compressed air or a vacuum to remove residual toner from the sleeve.
Note: Keep the air psi. low: too much air pressure may dent the sleeve.
7. Locate and clean the thick mylar strip. With a cotton swab, scrub the mylar
strip edge to remove all old toner build up.
8. Install the magnetic roller in the toner hopper unit. Refill the toner hopper with
new toner.
9. Separate the waste bin and drum unit sections from cartridge cover (4 plastic
pins Figs. 2 & 3).
Figure 3
Oasis Imaging Products, Inc. Technical Support: (888) 627-6555
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10. Remove the OPC drum. Clean, inspect, and lubricate the drum (with padding
powder) and store in a dark place. Replace if necessary. If replacement is
required, then perform the following to remove the OEM gears:
a. Insert a steel dowel through the non-contact gear and lightly tap the
edge of the opposite gear until it becomes dislodged.
b. Perform step a. on the remaining gear.
11. Remove the wiper blade (2 pins, 1 spring). Clean, inspect, and lubricate the
wiper blade (with padding powder). Replace if necessary.
12. Use compressed air or a vacuum to clean out the waste bin. Remove residual
toner from the corona wire with a cotton swab and 99% IPA..
13. Install the wiper blade (2 pins, 1 spring).
14. Install the OPC drum. Do not fully insert the drum axle hubs until the two (2)
screws securing the waste bin to the toner hopper are reinstalled.
15. Reattach the cartridge cover to the waste bin and drum unit (4 plastic pins).
16. Install the large gear (1 screw).
17. Install the plastic cover over the fill plug (1 screw).
18. Install the two (2) screws securing the waste bin to the toner hopper.
© 2001 Oasis Imaging Products, Inc. Any attempt to reproduce any part of these instructions without the written consent of Oasis Imaging
Products, Inc. may result in legal action. All registered trademarks are the property of their respective owners.