Question about Ricoh Aficio AP3800C Laser Printer

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PCU problem Hi, I am getting an error ' Reset PCU correctly.....YELLOW' I have doublecjhecked the guide as here: But all appears to be correct, as I thought. Any suggestions? Cheers Gary

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Re: PCU problem

Have you tightened the two screws either end of the brown retaining bar (inner cover) ? Is there a small white plastic bar sticking out from the front of the yellow PCU ? This white "stick" activates a switch in the inner cover

Posted on Nov 21, 2007

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Ricoh printer reset

AC charge output error [Cyan].
Poor connection with the PCU.
Check for broken connector in machine where the PCU goes into.
Defective PCU.

Sep 01, 2014 | Ricoh Aficio Printers & Copiers

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This is a PCU PCB Communication error. 9 times out of ten it will reset by simply switching the machine off and then on again. If the problem persists here is the section from the manual that describes the possible causes and remedies.

MFP - PCU PWB communication error
Trouble content
PCU PWB connector connection trouble. PCU PWB - MFP PWB connection trouble. PCU PWB trouble.
MFP PWB trouble.
Mother board trouble.
Check & Remedy
Check connection of the PCU PWB, the MFP PWB, and the mother board.
Check the ground.
Replace the PCU PWB.
Replace the MFP PWB. Replace the mother board.
I hope this helps

Good Luck

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Jan 14, 2014 | Sharp Printers & Copiers

2 Answers


I had the same issue with my CL3500N. I kept taking out and reinserting the color PCU with the same resulting error. However, I fixed my problem. My color PCU is now reset and printing
Instructions on how I fixed the issue:
1) Turn off the printer and remove the color PCU from the printer
2) Look inside the printer where you removed the color PCU and you will notice three attach points (gears) that each of the three color PCU rollers connect to the printer.
3) Notice that each roller inside the printer has an arrow stamped in metal pointing toward it. On my printer, one at approximately the 2 o'clock position, 9 o'clock position and 3 o'clock position.
4) On the color PCU look at the end of unit that you insert into the printer. Notice the white female connectors on each of three rollers. Look closely and you will see that there are notches inside each connector (gears). One of those notches is longer than the others.
5) For each roller insert your finger into the white connector (gear) to rotate the roller so the long notch aligns with the arrow inside the printer. Be careful not to touch the photo sensitive area of the roller.
6) Insert the color PCU into the printer and turn it on. May need trial and error to align the notch correctly, but it certainly worked for me.

Oct 06, 2011 | Ricoh Aficio CL3500N Laser Printer

1 Answer

Code error 307 ricoh CL4000DN

sc 307 is a charge bias error having to do with the yellow photoconductor unit (PCU). Replacing the yellow PCU should resolve your problem. If the problem persists even with a new PCU, you will likely need to have either the high voltage supply board or the drum positioning plate replaced.

Thanks for using FixYa!

Nov 24, 2010 | Ricoh CL4000DN Laser Printer

1 Answer

I have a Ricoh C811DN printer and getting the error message "SC303 - Functional Problem" I downloaded the Ricoh error codes and the description for this code is: Charge Corona Output Error 3,...

Many times, replacing the PCU can fix this problem. For sc303, yellow is the color in question, so try replacing the yellow PCU. If that doesn't fix the problem, you may need to have your printer's high voltage power supply replaced.

Nov 02, 2010 | Ricoh Aficio SP C811DN Laser Printer

1 Answer

Reset pcu correctly


Thanks for using FixYa. It means that the photoconductor unit is not set correctly. You’ll need to reset the black or color PCU correctly. Match the green arrow at the tip of the photo conductor unit to the rail inside the printer. Make sure the green arrow fits securely on the rail before proceeding to the next step. If you do not attach the green arrow of the photo conductor unit securely to the rail, you may damage the photo conductor unit. Push the front of the photo conductor unit slowly, sliding the unit on the cover and into the machine until it stops.

Please do accept the solution if the issue is resolved or else revert for further assistance.


Jan 31, 2010 | Gestetner Printers & Copiers

2 Answers

Gettin a Error: replace Black PCU.

Hi yes you can fix it yourself it is just a warning that says the black pcu is almost warn out , but if the quality is still good you can clear the message is the sp modes by holding down online and escape whilst switching on the machine , under the menu "engine " is a sub menu called data log enter it and execute pm counter reset
hope this helps

Oct 15, 2007 | Ricoh CL3000E Laser Printer

2 Answers

Error message says reset PCU correctly

You get this message because the PCU isn't seated properly. This is a link for the user manual for this printer: On page 13 shows a diagram that indicates the photoconductor unit on the printer. Page 60 shows you different error messages, what they mean and how to fix it. It means you have to take out the pcu and reseat it into the printer, it is not in correctly. Page 29 shows you how to do this. It has pictures of how to take out the pcu and put it in correctly. I hope you get it fixed.

May 12, 2007 | Ricoh Aficio CL2000N Laser Printer

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