Ricoh 1224C, SC481

[kayjaig]

Ricoh 1224C, pops SC481, i tried to replace the drum unit with transfer unit all together. but somehow the CPU can't pull out. looks like the CPU unit is locked due to SC481. Any Clue to release the CPU. thanks.

[Eric1968]

This has nothing to do with the CPU. The machine doesn't detect the mark on the transfer belt. Check if the transfer belt is not damaged or out of position.

[Llama God]

I think that Kayjaig meant to say PCU!

If you've removed the 3 screws then it should slide out, I am not aware of a locking mechanism on these machines. I have had them catch at the top left of the PCU though, next to the top of the toners, but that's as much as I can offer on this!

[Eric1968]

I think that Kayjaig meant to say PCU!

If you've removed the 3 screws then it should slide out, I am not aware of a locking mechanism on these machines. I have had them catch at the top left of the PCU though, next to the top of the toners, but that's as much as I can offer on this!

The PCU Unit consists of a drum belt and a transfer belt. On the transfer belt is a mark which tells the machine the home position of the transfer belt. SC481 means that the machine somehow can't detect the mark.

[Llama God]

I know what the problem is, I just don't know of a locking mechanism which would prevent it from being slid out of the machine.

[Eric1968]

There's no locking mechanism. The removal of the three screws is enough to remove the unit.

[Vulkor]

I've had the to remove the Fuser before to remove this pcu. Not sure why. One time I had to remove that front cover the PCU. Then it finally came out.

[teebee1234]

There is a cam the rotates to position the upper cleaning assy up and down. If it's stuck down it will catch on that plastic rail that guides it when you install it. You can try and run an output check (Fuser Motor, T/B Cleaning Clutch and T/B contact solenoid) see if that will reposition it. If that fails you will probably have to give it a good yank (try the previous suggestions first of removing the fuser and covers). You may break the guide but it's easy to replace (G0706405 On/Off Rail). I would bet the belt is torn at the rear, giving you the error. Not uncommon if it's actually made it to its full service life.

Addendum: Before you try the above, try and lift the cleaning assy upward and pull on the pcu. You may have to remove the front cover of the pcu to access it.

[iMind]

[teebee1234]

There you go, a lot simpler than my convoluted directions

[kayjaig]

Thanks for all your advices. problem solved

I hand turned the drum belt for few times. machine was able to get ready without SC 481 code. i made a copy then the drum was pulled out without problem.

[tcs04]

I hand turned the drum belt for few times. machine was able to get ready without SC 481 code. i made a copy then the drum was pulled out without problem.

Yor may be seeing the start of a problem with the drive gearbox. If the lift clutch for the transfer is slipping the lift cam will not raise to 12 o'clock and the PCU will stick in.

If the fault occurs again remove the internal exit tray to expose the top of th PCU, you will be able to seeth the postion of the cam and lift the transfer arm to aloow removal.

[bryand]

SC481 is usually caused by the transfer belt ripping on the front side. The pcu's also get stuck in the machine quite often. You had to remove the fuser and use a long flat device (like a chisel) and pry up the plastic pcu holder. A real pain but haven't had any in the field for years

[h.lubecks]

Erro SC 841

Hi,

First let me thank you all for the help I have had from all you nice people,

I have an aficio 1224c, after the error SC 841, I opened it , and I think the transfer belt is damaged, it looks like it is cut in one small stroke ( 10 mm) on the left side then the rest is still in one pace.

I don't know if this is normal. or is it cut (that is what I think), if so, can I order just the belt or the hole thing.
Here is a picture of the belt:

Thanks again.

Greetings
Hans.

[Llama God]

Assuming that this is SC481, not 841, then you'll have to replace the whole PCU as the individual parts are not available.

However, if you feel so inclined, you could try using a piece of black electrician's tape to mask over the tear. This may allow you to get further use from the very expensive PCU!