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HP RC2-2484 Drum Drive Gears for HP P4014 Series Printers.

RC2-2484 is the drum-drive gear(s) for the HP LaserJet P4014, P4015 and P4515 printers. These printers have separate tray-lift, paper feed, drum drive and fuser drive motors. The drum-drive gears make the set of rollers in the print cartridge rotate. The photoconductive drum is at the core of the printer's page-making process. The drum drive motor's ability to drive the drum and other cartridge rollers is therefore critical to what the printer does.

Laser printers almost invariably have the printing components as a cartridge that the user can change. The drum drive gears need to engage the print cartridge firmly when needed and disengage to allow the cartridge to be removed. This is done by having a drive cog with a central boss linked to the cartridge lid. The boss rises into the cartridge when the lid is down and withdraws when the lid is raised. It takes considerable effort to rotate the drum.

The drum motor RL1-1659 is geared down to work the drum through a big 193 tooth gear which sits on a spring. The release arm mechanism RC2-2480 connects the cartridge lid to the drum drive gear and pushes the drum-drive boss in and out.

RC2-2484

The drum drive mechanism and motor seem to give a few problems with these printers. This might be partly that older printers had one powerful main motor driving pickup, drum and fuser so it was capable of overcoming almost any obstacle, the RL1-1659 isn't so thuggish. Also the CC364X cartridge comes in a 25,000 page version and it has been suggested that refillers keen to make them last that long over-stuff the cartridge with toner and this overloads the cartridge drive.

If there is a fault in the drum drive chain that isn't immediately visible. If the motor were stalled the printer software should detect that and report 59.4 error. However if the drum motor isn't stalled because a cog is damaged the printer might not detect that. Paper might pass through the printer and come out blank, alternatively it might jam under the cartridge. Obviously the cartridge won't turn with the lid open and we don't recommend fooling the lid-open switch for this kind of fault as there will still be nothing to see. Instead put a mark on one of the cartridge cogs, run a test page and look to see if the cog has changed position.

Dismantling the drum drive cog chain is probably less horrible with the P4014 printers than with previous models because having several motors makes it less complicated.

Release arm parts around RC2-2480 and drum motor RL1-1659 work together with the drum drive gears.

To see RC2-2484 in context in the engineering diagrams click here.

HP Information

HP provide no information on this part - if it exists officially that isn't reflected in partsurfer. There isn't a GTIN (EAN/UPC) at present either.

Because there isn't an official definition of the part it isnt always clear what you well get when this part is ordered. Many suppliers seem to include the release arm components and that is likely to be helpful as there is room for confusion about the two part codes allocated to them as well.

Web Research

Although this part is only semi-official Google lists About 52,000 results (0.20 seconds) in July 2013.

Our research found nothing but parts vendors, no instructions and very little discussion of faults this part might fix under the part code. Anyone with a fault in this area is going to search for the service manual.

Supply Situation

All the parts available are "refurbished" ie pulls from decommissioned printers. Price and warranty are entirely up to the vendor.

The part is listed by one UK distributor but in July 2013 they didn't have stock. Since we know they stripped half a dozen printers earlier this year they presumably sold out. We think there is a demand for the part, but not sufficient to have pushed it up HP's priorities.

We expect to be able to provide these parts, sometimes on a lead time. The price is indeterminate at present, and largely reflects the logistics of obtaining one. Our prices change with distribution lists - see the catalog. Stock numbers indicate there is not much call for the part.