Remanufacturing Instructions

Page 1 of 1

Remanufacturing Instructions

HP 8500 Color 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 #

H5DB20

HPC4150A (Cyan)

H5WB20

HPC4151A (Magenta)

45CPCHIP

HPC4152A (Yellow)

45CPRESET

85DR1105

OEM Yields: 8,500 pages @5%

11. Remove the two screws from the end-cap

on the non-geared side of the cartridge.
This will allow you access to the shutter
mechanism and the toner fill plug.

2. Find the location of the two screws and

remove them. This end-cap covers the
gears and numerous electrical contacts.

Fig. 1

Fig. 2

Page 2 of 2

Remanufacturing Instructions

HP 8500 Color Toner Cartridge

Technical Support

Memphis, TN (888) 757-0762

Nashua, NH (888) 833-5727

3. Gently remove the end-cap and set it

aside.

4. Clean the contacts in the end-cap with

compressed air / alcohol. Some of the
gears in the drive train are not secured to
the cartridge, be careful not to loose
them.

5. Please note the proper orientation of the

gears for future reference, remember
some of them are loose and can be
easily lost.

NOTE:

Be sure not to damage the copper

contact spring located at the bottom of the
cartridge.

6. Using a small flat-head screwdriver

CAREFULLY pry off the electrical
contact on the developer roller drive
gear. This contact is extremely fragile
and easily damaged.

7. If you want to remove the outer two

drive gears you may do so at this time.

Fig. 3

Fig. 4

Fig. 5

Page 3 of 3

Remanufacturing Instructions

HP 8500 Color Toner Cartridge

Technical Support

Memphis, TN (888) 757-0762

Nashua, NH (888) 833-5727

8. Carefully remove the O-ring clamp from

the developer roller axle.

NOTE:

Be sure NOT to lose the clamp. It is

difficult to remove because it rides in a
groove and has a tendency to fly off during
the removal process.

9. After removing the O-ring clamp,

take off the developer roller drive
gear and set it aside.

NOTE:

If either of the O-ring clamp or

developer roller contact is damaged, there
is a high probability of a print defect
occurring.

Fig. 6

Fig. 7

Fig. 8

This is an example of an undamaged O-ring
clamp and developer roller contact.

Page 4 of 4

Remanufacturing Instructions

HP 8500 Color Toner Cartridge

Technical Support

Memphis, TN (888) 757-0762

Nashua, NH (888) 833-5727

10. Using a small flat head screwdriver, pry

off the spring-loaded latch on the non-
geared side of the cartridge. Be careful
not to loose the small recoil spring
located behind the latch.

11. Remove the small white shutter

actuator arm from the side of the
cartridge.

12. Disengage the small recoil spring

on the shutter arm.

13. Pull the lower portion of the shutter

arm out of the cartridge. This will
allow you to fold the shutter back
without having to remove the entire
shutter assembly.

Fig. 9

Fig. 10

Fig. 11

Page 5 of 5

Remanufacturing Instructions

HP 8500 Color Toner Cartridge

Technical Support

Memphis, TN (888) 757-0762

Nashua, NH (888) 833-5727

14. Locate and remove the two screws that
attach a cover plate to the cartridge. This
plate covers the toner fill plug, as well as
acting as a developer roller stabilizer.

15. To remove the developer roller simply
grab the exposed axle and gently pull it out.
Do NOT lose the bearings located at each
end of the developer roller.

16. Using compressed air, clean the sponge
transfer roller of all OEM toner.

17. Due to the design of the cartridge, it is

necessary to fill the toner hopper
BEFORE the developer roller has been
completely installed. To do this, hold the
developer sleeve in place while you are
filling the cartridge. A simple way to do
this is to secure the developer roller to the
cartridge with a rubber band.

NOTE:

If you choose to just hold the roller

in place with your hand, do NOT touch the
coated part of the sleeve with your bare
hands.

Fig. 12

Fig. 13

Page 6 of 6

Remanufacturing Instructions

HP 8500 Color Toner Cartridge

Technical Support

Memphis, TN (888) 757-0762

Nashua, NH (888) 833-5727

Oasis and You ... Succeeding Together!

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

18. To remove the doctor blade, take out
the screws that are located at each end of
the metal stamping. The doctor blade
assembly consists of three parts, which
come out separately.

NOTE:

To maintain optimum print quality

it is recommended that the doctor blade be
changed out each cycle.

Fig. 14