mpc7500 & mpc7501-can't detect toner.

[Guest]

halo.

I having this problem on Venus -Mpc7500/Mpc600 & Mpc7501/Mpc6501.it can't detect new toner and sometimes detect no toner even inside toner beg still got half. to recover it i did - clean toner sub unit - adjust the toner remain in sp mode - replace new toner.
mostly i having problem on black toner and recently cmy,after i service,replace toner and replace toner clutch etc sometime problem appear again when user trying to replace toner. i already check on manual/buletin there are no info on it.

can anyone give me a help or idea's

[JustManuals]

Re: mpc7500 & mpc7501-can't detect toner.

This Parts & Service manual can be purchased for $12.77 and downloaded immediately after payment from

http://www.justmanuals.com

Paul@justmanuals.com

[wfinn]

Re: mpc7500 & mpc7501-can't detect toner.

Check your developer setups. If one of them wasn't setup properly then it will prevent the machine from detecting toner. To check them look at SP3815 and the setup at 3812. Whichever one is not displaying a 1 will need to be replaced. If having problems during replacement of the developer usually it will happen when you try to send the toner to the unit because this initializes the TD sensor. If this happens then you need to replace the entire development unit and redo the developer loading. Even if the color in the SP modes is not the color with the toner loading problems it will still cause the toner loading problem. Before you start any major work on this make sure your firmware is up to date. There are a lot of fixes in the firmwares for toner issues along with many other problems.

[teebee1234]

Re: mpc7500 & mpc7501-can't detect toner.

Ditto what wfinn says, this is generally caused by not following the initial setup exactly. Attached is the Tech Bulletin that addresses this along with one that gives an outline of the developer setup....

I've also added the pages from the Troubleshooting section of the manual that addresses this also...

[jonezy999]

Re: mpc7500 & mpc7501-can't detect toner.

I agree with all that has been said here. These machines have a ton of codes to run after parts replacement and they aren't exactly displayed or explained very well in the manual. Good nights home work that manual.

[RMS tech]

Re: mpc7500 & mpc7501-can't detect toner.

Today one of my mpc7501 having problem with toner yellow- meter reading for color 78126 black 451980,to recover it again i just do the setting.
For information,last week friday new mpc6001-meter reading for color 25810 black 51090-c'nt detect new toner black and old toner still got half,from my cust infor this there 1st time to replace toner.

i will check the manual/bulletin also the SP and update the result

thanks for the support.

[techsass]

Re: mpc7500 & mpc7501-can't detect toner.

Not a true fix, but a get out of jail card that works.

Run Sp3801 for any color that doesn't have a 1 in Sp3802
Change Sp3410-x to 10
Turn off copier & insert blank SD card in the service slot
Turn on copier & leave the front door open
Run Sp5824 - NVram upload to SD card
Run Sp5801-2 engine clear
Reboot copier
Run Sp5825 - NVram download
Turn off copier & remove the SD card

[leo34staffs]

I have results for sp 3812 -4111 and 3815 reads 1447. This machine is saying toner liw for magenta. Does the above solution work ok?

Devs have only done sbout 60k and did not want the expense of four new devs.

Also can all 4 devs be setup simultaneously?

Its odd that the add toner issue takes a while to materialize.

[TonerMunkeh]

Re: mpc7500 & mpc7501-can't detect toner.

I personally do one dev setup at a time. These things are far too tetchy to risk setting the lot up at once. One problem during the first dev fill or TD sensor initialisation, you have three bottles of dev sat on the faceplate you have to take off to do the manual fill.

So, to summarise, the Venus dev fill procedure is horrible and the person responsible for it should be kicked in the crotch.

[jonezy999]

Re: mpc7500 & mpc7501-can't detect toner.

the Venus dev fill procedure is horrible and the person responsible for it should be kicked in the crotch.

Hear, bloody hear.

[slimslob]

Re: mpc7500 & mpc7501-can't detect toner.

I have results for sp 3812 -4111 and 3815 reads 1447. This machine is saying toner liw for magenta. Does the above solution work ok?

Devs have only done sbout 60k and did not want the expense of four new devs.

Also can all 4 devs be setup simultaneously?

Its odd that the add toner issue takes a while to materialize.

See Bulletins 021R and 025R for the MPC 6501-7501. 021 is a trouble shooting guide. 025R is instructions for Add Toner Condition Reset.

The reading for 3812 shows that one of the 3811 did not complete properly for the black developer. Try rerunning 3811-003. This should set 3812 to "1111".

The reading for 3815 shows that the developer loading SP3814 did not complete properly for all three of the colors. Were these results checked before removing the development cartridges after loading? You can try rerunning 3814-002 and see if this will put 3815 to "1111".

Once both 3812 and 3815 show all 1's, check the white toner hose for the color that is showing low for a clog. Procede to the reset procedures in bulletin 025R. I had a MPC 6501 two weeks ago that I had clear the magenta hose and reset.