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Shaun WingrinFlag for South Africa

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HP laser printer repair

Say, an HP laser printer, Product number CB537A is getting repeated paper jams. There is a rubber like substance, maroon in colour, that is falling out of the top part of the printer. This is most likely the problem. It seems to be part of a roller. It is behind a section that says CAUTION MAY BE HOT.  
Kindly advise if this can be easily repaired and what the replacement part. most likely would be.
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Antzs
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Without looking/checking the printer it may be difficult to diagnose the problem.  But from your description the issue is most like due to the roller rubber which has harden or melted due to the heat or wear and tear.

Replacing it would be simple if you are familiar with the components of a Laser Printer.  Dont replace anything after you have just used the printer as it would be HOT.  

https://support.hp.com/us-en/document/c02696350.
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☠ MASQ ☠

Hi Shaun, I've attached the Service Manual for your MFP.  Based on your product number this is a basic MFP with only black toner as my immediate thought was this is debris from a magenta color cartridge in a color printer.

Unless this is debris that's got inside the printer the only rubber components are the rollers.  You'll have two short rollers and one long roller (about the size of a large pencil) none of which are supplied in a maroon color though.  They are pickup, separation and transfer rollers in the guide.

The hot bit is the fuser which gets very hot so leave the printer disconnected for a while before hunting around in there.

Hopefully it will turn out to be one of the rollers but don't understand the color issue unless this is actually a color printer.

There aren't that many user serviceable parts (i.e. spares you can buy) for this model.
hp-lj-m1120-mfp-manual.pdf
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Its B&W printer. Its visible just above the ruler. Its only visible on the left hand side of the printer. Seems to be part of the printer. Would need to source this part to get delivered to South Africa.
15611043297312679325611858002443.jpg
Looks like debris caught above the fuser.  Not sure how that's got in there though, there's nothing normally in the machine that color.

The strip down in the service manual will get you there.  but you'll need to remove most of the casing.  Keep notes as you go.  It is pretty straightforward and reversing the process has no real "gotchas", if it is debris you won't need to buy anything .

If whatever it is rubbery then leaving it runs the risk it will eventually melt under the heat of the fuser and make things worse.  In fact it could be the result of low melting point material as powder melting into the lump you can see. Paper jams might just be obstruction rather than a roller failing (unless some of this is stuck to the roller surface).

One thing I do in that situation is to take some thin card - almost at the limit of what the printer will take and put that through to clear the path.  You can do the same thing with blotting paper for powder.

In your situation if a vacuum won't grab it you'll need to start taking it apart.
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hdhondt
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hdhondt you have hit the nail on the head.
It is now saying INITIALISING at startup and not proceeding further. Could this be fuser related or perhaps cartridge related? After I removed some of the fuser that was blocking the paper path it printed fine but then the INITIALISING error started.
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Tx for the sound advise. Pls recommend a replacement printers of a similar spec (entry level laser) that allows for wifi printing from Android and Apple phones. tx
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Thanks for the points shaunwingin.
Sure. PS Do you prefer Brother over Samsung and if so why?
Samsung do not have the best reputation, so I'd go for Brother. Or try Xerox, they're usually pretty good but tend to be more expensive.