MPC2011sp not adding black toner

[Polarbear]

Hi all

We have a weird one here.

This machine worked well from new - for about a week, then it stopped and demanded black toner (with a full bottle still installed).

Some testing was done with these results:

• When the machine is standing in the add toner condition and the front door is opened and closed, the black bottle turns for one cycle and then stops. One can here the lower toner supply motor pulse as if it is trying to supply toner, but the bottle does NOT turn.
• When doing a output check on the black toner motor, it turns.
• Have replaced the IOB with a known working one - no improvement
• When testing the black pcu in a known working machine, it tones up

Now my question is..... how now?? The toner supply logic surely comes from the IOB?? We have flashed all the latest firmware as well in the hope that this will help - no improvement.

Someone suggested that I replace the toner sensor that is attached to the toner supply assembly (similar to the ones on the spc430 toner supply assembly) as a last resort.

I would appreciate any help in this regard.

[Zeldaman]

[TonerMunkeh]

Re: MPC2011sp not adding black toner

Yep, the black toner pump has gone bang.

[Polarbear]

Re: MPC2011sp not adding black toner

Yep, the black toner pump has gone bang.

Hi TonerMunkeh

If you say the toner pump has gone - what makes you say that (I am trying to understand).

The fact that the motor turns when I close the door, just baffles me. Its not like the old attraction pumps that used the make the right sounds but do nothing.

I would appreciate your input.

[keithxxiii]

Re: MPC2011sp not adding black toner

There is a coil inside the toner hopper assembly that could have been broken. A strong adhesive could do the trick.
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[TonerMunkeh]

Re: MPC2011sp not adding black toner

There is a coil inside the toner hopper assembly that could have been broken. A strong adhesive could do the trick.
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What he said. I had a brand new MPC2003 do exactly the same thing. If you take it out and vacuum it, you'll find the auger is most likely snapped.

The odd thing is the entrance to the developer unit was absolutely rammed with toner, but I don't know how. Broken augers usually mean no toner but this is a Metis after all.

[Polarbear]

Re: MPC2011sp not adding black toner

What he said. I had a brand new MPC2003 do exactly the same thing. If you take it out and vacuum it, you'll find the auger is most likely snapped.

The odd thing is the entrance to the developer unit was absolutely rammed with toner, but I don't know how. Broken augers usually mean no toner but this is a Metis after all.

So if I understand this correctly, if the coil is broken the bottle will not turn?

[keithxxiii]

Re: MPC2011sp not adding black toner

The bottle will turn accordingly to the programmed value from the sp mode. But you will notice that the entrance from your toner bottle going to the hopper unit is filled with toner.

[Polarbear]

Re: MPC2011sp not adding black toner

On this machine the bottle only turns when I open and close the front door (one cycle only) or when i do an output check on the bottle motor.

Otherwise it does not turn at all. Even when the dev unit runs empty and issues a toner bottle empty signal.



I have now replaced the toner end sensor in the sub hopper as well - with no improvement.

[TonerMunkeh]

Re: MPC2011sp not adding black toner

Did you take the sub hopper out and check the operation of the auger?

[Polarbear]

Re: MPC2011sp not adding black toner

Did you take the sub hopper out and check the operation of the auger?

Yip the auger is fine. The bottle that doesn't turn gets me.

[Counsel]

Re: MPC2011sp not adding black toner

If you do a forced toner supply will the bottle add toner? I do think its odd the bottle wont turn unless run in output mode, or when the door is triggered open, shake the door once while its trying to run make sure the door switch is working. Check your SP for toner remaining and make sure its reading a bottle with toner remaining in it and not an empty bottle, could think the bottle is empty, that used to happen on some older gens where the bottle would say its empty and to replace the bottle even when its full, had to turn off toner detection and reboot then turn detection back on again.

[Iowatech]

Re: MPC2011sp not adding black toner

On this machine the bottle only turns when I open and close the front door (one cycle only) or when i do an output check on the bottle motor.

That's likely because due to the toner failing to reach the developer, the machine determines that the bottle is empty after turning the bottle just enough to produce a positive toner feed indication when everything else is working properly.

[Polarbear]

Re: MPC2011sp not adding black toner- [SOLVED]

That's likely because due to the toner failing to reach the developer, the machine determines that the bottle is empty after turning the bottle just enough to produce a positive toner feed indication when everything else is working properly.

Credit to all of you who pointed to the toner sub hopper!

Your post made me take a step back and start from scratch. Seeing that I, up to now,trusted the tech that did the field call, and assumed that all the basics were checked....

I removed the pcu - and no toner in the shute.
I triggered the toner shutter (with a long screwdriver) and no toner fell out.
I then removed the sub hopper, and found it filled to the brim with toner
Dumped the toner and low and behold the toner supply auger lay completey out of the shute and cleanly snapped off the shaft!

Repaired the shaft, re-assembled and did a forced toner supply- and the bottle turned!
Did about 4 more to make sure there is enough toner in the sub hopper and ran around 4 full SMC reports with the bottle spinning every so often.

Concluision: Its the same shitty toner supply system that gave us grey hairs in the SPC430 - only bigger! Same design flaw: If something fails in the sub hopper, so that toner does not get to the dev unit (and td sensor) the machine assumes that the toner is depleted {because if can see toner in the sub hopper} and has no other explanation for the condition!

Thanks again for all the helpful replies!