MPC5000 Blown Fuse

[barber782]

Hi,

We have a customer with a MPC5000 that has a history of blowing the fuses on the PSU.
As suggested by Ricoh, the cause is apparently the IH Inverter, which we have already changed.
Today their machine has blown the fuse again, and now we are back to square one.
Has anyone had any problems with this, and is there a permanent resolution?

Regards


Nick

[Herostrat]

Re: MPC5000 Blown Fuse

Tryed a diferent PSU?
Mount it and test it for a while on machine,if fuse blows again then keep looking for something other (fuser problem perhaps) if it holds then sell them.

[m2digital]

Re: MPC5000 Blown Fuse

If it's fitted with tandem tray 3 (the one that shifts paper from left to right), then it's known to blow the fuse if the paper gets stuck while being moved from left to right.
The rear fence on the left tray gets broken so if the paper is loaded too far to the rear it will get jammed while being shifted to the right.
Check for history of SC503 on the SMC report.

[StrippedScrew]

Re: MPC5000 Blown Fuse

I've had a bunch of the buggers blowing polygon motors lately, and taking the BICU with it. Check for SC202 to verify.

[kannuki2]

Re: MPC5000 Blown Fuse

Which fuse on the PSU blown? number?

[slimslob]

Re: MPC5000 Blown Fuse

How is the quality of the electrical service? Crappy incoming power without power protection can blow fuses on spikes, surges and slow voltage increases.

[ewizzy]

Re: MPC5000 Blown Fuse

If its the FU1 fuse being blown on the PSU, then this is caused by the IH invertor board...... Believe it or not, the IH invertor board goes faulty because of the Drum phase sensors. The sensor get an electrostatic build up, which takes the IH invertor board out.
The sensors have been improved with earthing plates

This is the Ricoh RTB number for those of you that have access to the My ricoh technical website RTB No.: RD029075 : IH invertor broken



The solution is: Replace FU1 (fuse 1) on the PSU, the IH inverter, and the drum phase control sensor (X 4)

D0891135 x 4 this is the drum phase sensor, plus holder plus earthing tags.


Hope this helps someone.

[Gift]

Re: MPC5000 Blown Fuse

I had a case we needed to change the IH inverter plus IH coil unit after changing the IH inverter replacement fixed the issue just for a few days. Read the RTB with the sensors but never proceeded it - had ~5 cases during the last years and ignoring that RTB didn't fire back

[ewizzy]

Re: MPC5000 Blown Fuse

I had a case we needed to change the IH inverter plus IH coil unit after changing the IH inverter replacement fixed the issue just for a few days. Read the RTB with the sensors but never proceeded it - had ~5 cases during the last years and ignoring that RTB didn't fire back

The sensors are only a few quid though, the ih board and coil are a few hundred. I fixed one mpc 4000 with the ih coil and board 18 months later, it went again. I now don't bother with the coil, just fit the board and the phase sensors and it saves money, and saves the risk of it going again.

All in my humble opinion of course.