Remanufacturing Instructions

Page 1 of 1

Remanufacturing Instructions

HP 8500 Black Toner Cartridge

For Technical Support, please call Memphis, TN at (888) 757-0762 or Nashua, NH at (888) 833-5727.

Reference Information:

Oasis Products:

OEM Part # C4149A

H5DB20

H5WB20

OEM Yields:

45CPCHIP

17,000 @ 5%

45CPRESET

85DR1105

1. Remove shutter / developer roller end

cap on the non-geared side of the
cartridge. It is not necessary to
remove the two screws that are
located near the end-cap.

2. To remove the developer roller shutter,

gently push up on the metal connecting
rod to open the shutter.

3. Once open, push the rod toward the
geared end of the developer roller, this will
allow the shutter to become detached from
the end-cap.

4. With the shutter door in the open

position, disengage it from the shutter
actuator arm.

Fig. 1

Fig. 2

Page 2 of 2

Remanufacturing Instructions

HP 8500 Black Toner Cartridge

Technical Support

Memphis, TN (888) 757-0762

Nashua, NH (888) 833-5727

5. Locate and remove the four screws
from the non-geared end of the
cartridge.

6. Once the screws have been
removed, gently pry of the end-cap.

7. Remove the cartridge end-cap. Be
careful not to lose the small black
bearing that rides in a recessed area in
the developer roller magnet housing. The
bearing is unattached and will fall out
easily.

8. Locate and remove the three screws

on the opposite end (geared end) of
the cartridge.

Note:

It is not necessary for the shutter

actuator arm to be removed, it may
remain attached to the end-cap.
Although it is not necessary to remove
this end-cap to take out the developer
roller, it is recommended to facilitate
cleaning the contacts that are located on
the inside of the end-cap.

Fig. 3

Fig. 4

Fig. 5

Page 3 of 3

Remanufacturing Instructions

HP 8500 Black Toner Cartridge

Technical Support

Memphis, TN (888) 757-0762

Nashua, NH (888) 833-5727

9. While removing the end-cap be
careful as none of the drive gears are
secured to the hopper. Also, be
careful not to lose the developer roller
contact spring, located on the end of
the developer roller.
As on the non-geared side of the
developer roller, there is also an
unattached bearing that resides in an
indention in the end-cap, do not lose
this.

10. Clean off all contamination from
the contacts using 99% IPA and a
cotton swab, take care not to leave
any lint in the contact area.

NOTE:

Be sure you have cleaned the

developer roller contact spring
thoroughly.

11. If you do not want to remove the

drive gears, it is possible to remove
the developer roller and then re-
attach the end cap for filling
through the developer roller
opening.

12. Remove the developer roller. (In
this photo, the end-cap on the geared
side has not been removed.)

13. Clean both the roller and inside of
the toner hopper with clean, filtered
compressed air.

Fig. 6

Fig. 7

Fig. 8

If some or all of the gears
have fallen off the side of
the cartridge, use this

picture to reaffix them in
the proper location.

Page 4 of 4

Remanufacturing Instructions

HP 8500 Black Toner Cartridge

Technical Support

Memphis, TN (888) 757-0762

Nashua, NH (888) 833-5727

Oasis and You ... Succeeding Together!

© 2004 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.

New Hampshire

(603) 880-3991
(888) 627-6555

Fax: (603) 598-4277

Tennessee

(901) 433-0334
Fax: (901) 366-9756

Texas

(972) 671-1307
(888) 591-3555

Fax: (972) 671-1359

Canada

(905) 568-3422
(800) 430-7886

Fax: (905) 568-3491

Illinois

(630) 982-1543

(888) 658-4555
Fax: (630) 928-1542

California

(714) 283-6270

(888) 656-9555
Fax: (714) 283-6276

North Carolina

(919) 776-0847

(866) 399-8558
Fax: (919) 776-0898

Europe
Netherlands

011-31-24-388-2233
Fax: 011-31-24-355-7373

14. To maintain optimum print quality

it is recommended to replace the
Dr. Blade assembly each cycle. To
remove the Dr. Blade take out the
two screws that hold the blade in
place.

15. Once the blade is removed, fill with
toner and re-assemble in reverse order.

Fig. 9