HP PRO MFP M125 SERIES CF283A TONER CARTRIDGE REMANUFACTURING INSTRUCTIONS
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13. On the right side of the toner supply chamber, remove the
two screws and end cap.
11. Install the new/cleaned drum, hub-side first.
12. Place the waste/drum section aside.
Step #4 - Install the gears on the new replacement drum:
A. Inspect the metal contacts on the contact gear.
Make sure that the contacts will make proper contact with the inside of the OPC drum.
B. Locate the side of the drum on which you are going to place the contact gear. On some OPC drums, this is critical.
See individual instructions for more information.
C. Lightly sand the INSIDE of the OPC where the metal parts of the contact gear will meet.
This will insure a good electrical contact.
D. "Dry fit" the contact gear in the OPC drum and check for a good contact with an Ohmmeter.
The reading should be a direct short, or no more than 1 or 2 Ohms.
NOTE
: When checking the contact, place one lead on the drum axle contact and the other on the edge of the drum. This way,
you will not have to pierce the coating that is on the OPC surface. A Radio Shack store carries inexpensive Ohmmeters for less
than $10.00 USD, and the sales people would normally be glad to show you how to use it.
E. Using the super glue, place a few (3-4) small drops of glue strategically around the inside edge of the OPC drum.
Make sure you leave a blank area for the metal contacts!
F. Insert the contact gear.
G. Check for continuity again with the Ohmmeter.
H. Repeat steps E and F for the drive gear.
NOTE
: Be very careful not to place the metal contacts in direct contact with the glue, as this will interfere with the proper
grounding of the drum, and the cartridge will not print properly, (solid black pages). It is also very important to NOT put any glue
on the gear, as the chances of it dripping out onto the drum surface and ruining it are high. Placing the glue inside the drum tube
works much better.
