Question about Ricoh Aficio AP3800C Laser Printer

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Recoh AP3800C ERROR 543

I installed a new fuser oil and my printer stoped in mid run stating error 543 - turned the printer on & off as advised to no avail Do not want to send for a service engineer who charge a £125 to insert a reset code. Would appreciate any help

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This is an overheat problem and will most likely come back. you can press CLEAR-1-0-7-STOP buttons in sequence holding down the stop button when you get to it. You should see a service screen come up if you do this correctly. Go into the first button (i think it says copy). you should now see a list of buttons1 through 9 usually. look in the 5 & 7 buttons. You are looking for something that says FUSING RESET or it may say SC RESET.push that button and reboot the machine. If that doesn't work check ebay for a new fuser.. It will run you $125-$150 there verses $250 from a dealer.

Posted on Nov 16, 2007

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Posted on Nov 01, 2007


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Posted on Jan 02, 2017

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1 Answer

My printer start showing error sc542 what to do?

SC542 is a heating roller warm up error. Most likely the fuser lamp has failed - a faulty sensor or board is also possible but not very likely. You'll need a new fuser, I suspect.

Jun 10, 2014 | Ricoh Aficio AP3800C Laser Printer

2 Answers

Fusing unit is not set properly

turn the printer off and reinstall the unit after it has cooled off (30 minutes). Then open cover B and D. Remove the fuser unit, then reinstall it properly. Close covers D and B. The error clears automatically if the fuser unit is properly installed.

If the error is not cleared, the fuser unit is out of order. Replace it with a new fuser unit.

Nov 19, 2007 | Ricoh Aficio AP3800C Laser Printer

1 Answer

I have been advised of an error message on an Aficio 3800 series printer. I am told they need an 'Oil Fuser unit ' but as far as I can see the machine uses a Fuser Unit OR an 'Oil Supply...

The fuser uses an oil supply unit, which is changed separately from the fuser itself. The fuser oil supply unit (400549) is what is required.

You will find the manuals and other sueful details about this printer here.

Jul 07, 2011 | Ricoh Aficio AP3800C Laser Printer

2 Answers

But how can i reset the counter after installing a new fuser oil unit

Press {Menu}.

"Menu" appears on the panel display.

Press {U} or {T} to display

"Maintenance", and then press


The maintenance menu is displayed.

Press {U} or {T} to display "Color

Regist.", and then press {Enter}.

Press {U} or {T} to display "Fuser
Adjust", and then press

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response.

Thanks, Joe

I’m happy to assist further over the phone at

Nov 23, 2010 | Ricoh Aficio AP3800C Laser Printer

1 Answer

My Ricoh 388 is in need of replacing the fuser unit which we just replaced months ago and are very expenseive. Is there a way to fill the oil only in the fuser unit instead of having to replace the entire...

Unfortunately, on the AP3800C the oil supply unit is part of the fusing unit. However, you can purchase just the oil supply portion of the fusing unit and replace that (part #G0604022).

I'm not sure how much that would cost, but it's got to be cheaper than a whole new fusing unit.

Jul 11, 2010 | Ricoh Aficio AP3800C Laser Printer

1 Answer

Replace fusing unit error

Can you put the old fuser back, just to see if the message clears.

Mar 04, 2010 | Ricoh Aficio AP3800C Laser Printer

1 Answer

120.07 Service Fuser Error

Service Fuser Error appears when the fuser does not warm to the required temperature. For this error on this Lexmark model C530dn, the manual states you should power off the printer and power it back on, and if it is not plugged into a wall power point, change it to a power point mounted directly on the wall. Personally, I never got a Lexmark printer to work doing this, but this is in the manual. If this won't help, and the printer is under warranty, you should log it in with the servicing company.

If the printer is out of warranty, your next option is to change the fuser which costs around $350, so I think you would be better off getting a new printer unless you find a second hand one on Ebay.

Jan 04, 2010 | Lexmark C530dn Laser Printer

1 Answer

Error message - Reset Oil Fuser Unit Correctly

The fuser oil sits on top of the fuser and has silver contacts on it. Sometimes the contacts in the machine get bent. Turn off the printer and check the contacts and if bent use needle nose pliers to make straight again. Make sure the contacts on the fuser oil are not drity.

May 27, 2009 | Ricoh Aficio AP3800C Laser Printer

2 Answers

Ricoh fuser oil replace message

That is not a good idea. The oil is kept track of by counting pages, not by a sensor that measures the oil level. The oil runs out and the machine can't tell and now you have ruined the fuser. Which cost a lot more than the oil tank.

May 26, 2009 | Ricoh Aficio AP3800C Laser Printer

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