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HP RM1-4532 Paper Pickup Drive for P4014, P4015 and P4515 printers.

The HP RM1-4532 is the paper pickup drive assembly for the P4014, P4015 and P4515 printers.

The RM1-4532 combines two mechanisms that used to be seperate in older models. The paper-feed pickup stage and the clutch for the feedrollers in the printer throat. This repositioning reflects a change in design. the paper-feed mechanism is not longer driven from a single main motor, rather there are separate motors for the fuser and drum. The motor driving the paper feed is still called the main motor but is is mounted on the back of this assembly - although it has it's own part number RL1-1657 and doesn't count as part of the paper pickup drive.

Pickup is done by a solenoid releasing a gear which then makes one turn back to a parking position. The P4014's predecessor the LaserJet 4200 and 4350 used something very similar. The Enterprise M601 series use a similar mechanism but the specifics evolve.

The paper pickup drive is located inside the bottom right of the printer and drives rollers midway across the cassette tray. The pickup roller RM1-0036 and feed roller RM1-0037 are mounted on the paper feed "Z" assembly RM1-4562 which is controlled from this assembly. The RL1-1658 retard drive shaft which controls the separation roller in the cassette tray is also driven from here.

The heart of the mechanism is a shaft with a large cog, a partially toothless cog and a couple of cams. The cogs around are driven by the main motor RL1-1657 but this large cog is parked and held by the armature -lever from the solenoid RK2-0270.Once the solenoid is released the cog and cam revolve. The paper feed shaft Z assembly drops onto the paper stack. The rollers turn and theRM1-0036 pickup roller is driven from theRM1-0037 feed roller in front of it. Paper is driven forward, the rollers go through a turn and a cam lifts the z-assembly back up. The teeth on the large cog run out and it has turned so that the solenoid armature grips again. Things stop until the solenoid fires for the next page.

The basic pickup mechanism has been around for years and is generally reliable. this heavy re-working of it doesn't seem to be causing much fuss.

Non of the sub-assemblies is normally available as a part in it's own right. Vendors offering refirb units often seem to be including the solenoid which might be helpful but isn't what the service manual parts explosions seem to suggest.

Almost every paper feed fault will prove to be the rollers RM1-0036 and RM1-0037 . If it isn't one of those look at the roller end of the paper feed "Z" assembly RM1-4562 which is notorious for losing its cogs. If the paper-feed Z assembly does lose its cogs that might be why you have to get involved with the pickup drive because it has to be removed to make a repair.

The list of asscoiated parts can be seen in the links above.

To see RM1-4532 in context in the engineering diagrams click here.

HP Partsurfer says (in July 2013):

HWP-RM1-4532-000CN Paper pick-up drive assy
RM1-4532-000CN Paper pickup drive assembly - Includes a metal plate with the paper feeder pick-up clutch, pick-up roller drive shaft, and drive gears

Icecat says RM1-4532-000CN = EAN/UPC 5704327628040 in category printer kits. There had been 40 product views suggesting a little interest.

Amazon seem to have ASIN B003D3ISM8 and B00BL5Y66M assigned by vendors

RM1-4532 fits the HP LaserJet P4014, P4015 and P4515 in all the N, TN, DN, X and XM varieties. The design or at least the part numbering changed for the M601.

Web Research

A google Query for RM1-4532 in August 2013 returned About 221,000 results.

Amazon (ZAR Systems) £53, Partshere $45, Chips £32.97 discounted to £31.54, eBay (astrocomputer) $10 (but $23.95 shipment), Misco £2,809.99 (amusingly), Morecomputers £47.90 (free delivery), Lambdatek £34.17, Printerworks (Refurb) $19.95, com-com (reformatted Partsurfer), impactcomputers $48.74 discounted to $39.95, Fastprinters $55.94, gzkds.en.alibaba no price, Sparepartswarehouse $44.03, Renewcomputer refurb $75 new $123, Ilgs refurb £18.54, printersupplies $36.48, feedroller $29.12, alibaba (Guangzhou Powershow) no price, alibaba (Guangzhou Powershow again) no price, alibaba (Guangzhou Powershow yet again) no price, Laserpros no price, Amazon (Toner and Printer) $29.12, Amazon (Quickship) $59.89, HP_Partsurfer no price, Newfuser $46.46, Marketpoint $48.85, Quikshiptoner $59.89, Pricegrabber $59.89, Printerparts-exchange $39.95. lbrty.com no price, hp-web.co.uk £38.39.

Prices noted are for a new item without tax. The list is as encountered. We haven't bothered with currency conversion - half of our readers are outside the UK and are more interested in dollar prices.

As seems usual non of the vendors listed did anything very different. Each just lists the part, the description from HP Partsurfer and a price. A few gave a picture if they are selling refurbed items and some apparently list driven sites shared one they seemed to have sourced from one place. Liberty Parts have some excellent photograpic parts explosions.

Fitting this part may well need the service manual - and even then the diagrams are not quite good enough to reconstruct how the mechanism works. It is a job for an experience technician.

Supply Situation

Despite the amazing number of references Google finds online we can find just two UK distributors who list it and neither has local stock. Parts will probably be obtained from HP stock and we should be able supply one in 3-5 days for about £33.

We suspect that very few people will want the whole assembly. It is much more likely that they will have accidentally stripped or lost one cog. However the individual parts aren't available.

At the time of writing (August 2013) non of the distributors was acutally listing this part althouh we think there would be little difficulty sourcing one. However whether the broker price would substantially undercut the HP price is doubtful. Even if only one cog is wanted the rest of the assembly becomes useless.

These suggestions on price and availablity are guidelines, our prices change with distribution lists - see the catalog . Stock numbers indicate there is not much call for the part.

Copyright G & J Huskinson & MindMachine Associates Ltd 2013, 2015, 2016. Some pictures derived from HP User and Service guides. These technical pages do not constitute an offer for sale; just our knowledge at the time of writing. See the catalog. Sales pages on this Web site use cookies to store user information. We also use Google Analytics to track site usage patterns.