MPC2500 add toner - black, already replace toner pump

[copyaction]

customer called for add black toner, had just replaced toner 2 weeks ago so it was barely used.
toner icon on screen showed 0 bars, turned off toner detect and printed counter sheet very light gray.

went ahead and replaced black toner pump and brand new oem black toner.
toner icon still shows no bars for black toner, other colors are registering fine.
it did not tone up and still printing gray.

did I approach this backwards and it is just not reading the toner chip so it won't add toner?
shouldn't the new toner be reading 5 bars regardless or the toner pump?

[slimslob]

Re: MPC2500 add toner - black, already replace toner pump

customer called for add black toner, had just replaced toner 2 weeks ago so it was barely used.
toner icon on screen showed 0 bars, turned off toner detect and printed counter sheet very light gray.

went ahead and replaced black toner pump and brand new oem black toner.
toner icon still shows no bars for black toner, other colors are registering fine.
it did not tone up and still printing gray.

did I approach this backwards and it is just not reading the toner chip so it won't add toner?
shouldn't the new toner be reading 5 bars regardless or the toner pump?

Did you turn toner detect back on? If toner detect is off, the chips is ignored and depending on the machine it may show no bars. A couple of things to check:

• When you replaced the pump did you also replace the hose from the toner bottle nozzle to the pump? They can clog. Ricoh recommends replacing as a set.
• After the light print did you try executing forced toning to see if the image density came up any?
• You might have a clog in the toner bottle nozzle assembly. Disconnect the hose and place a rag or paper towel below the nozzle. Pulse the toner bottle. You should get toner coming out of the nozzle and onto the rag or paper towel. If the nozzle is clogged above the toner out sensor, the one right above the hose connection, the machine will display toner out or no toner. Turning off toner detect will allow either 50 or 100 pages before it displays toner out.
• You could have a bad toner density sensor on the development unit.

[copyaction]

Re: MPC2500 add toner - black, already replace toner pump

Did you turn toner detect back on?

[FrohnB]

Re: MPC2500 add toner - black, already replace toner pump

Had this happen with Magenta a couple years ago. Replaced Pump and Hose to no avail, and machine would fail everytime for ACC. Ended up replacing the Development Unit and everything came around.

[copyaction]

Re: MPC2500 add toner - black, already replace toner pump

Ended up replacing the Development Unit and everything came around.

thanks but would that also cause the new black toner to not register 5 bars on the toner icon?

[slimslob]

Re: MPC2500 add toner - black, already replace toner pump

thanks but would that also cause the new black toner to not register 5 bars on the toner icon?

Probably the density sensor was bad.

[Imprestik]

Re: MPC2500 add toner - black, already replace toner pump

It's you dev clutch

Had this happen many times from the MPC4500 all the way to the MPC5502

Replace the clutch located in the drive unit, will fix your issue 100%

I will guarantee the clutch shaft has rust all over it so scuff it up with sandpaper before you put the new clutch in

[copyaction]

Re: MPC2500 add toner - black, already replace toner pump

Thanks, I am going back with a developer unit and clutch. But I am still not understanding why the new black toner does not register as full when I installed it?

[copier tech]

Re: MPC2500 add toner - black, already replace toner pump

Depends on what message you have determines what action you should take.
Toner depleted or toner not set are two differant issues.
Set the toner detect SP back on, power cycle.

What exact message do you have?

[copyaction]

Re: MPC2500 add toner - black, already replace toner pump

48523F6A-2890-4D35-A39B-24DCDB602771.jpg

Yes I set toner detect back on before I replaced the pump and new toner.
it never had a “toner not set” message.
it just said add black toner and the icon in the bottom of the screen shows no bars, even with the brand new toner I installed, and the toner that was initially in there was still nearly full and reading zero bars.

[slimslob]

Re: MPC2500 add toner - black, already replace toner pump

OK, let's try this one more time.

You have 3 symptoms:

1. Machine is showing add toner
2. Bar graph is showing zero bars.
3. Counter is printing light gray.

Since you have replaced the pump and toner hose, the only tong that I know of that will cause all 3 is no toner present at the toner out sensor on the toner nozzle assembly at the back of the toner cartridge tray. This is normally the result of clogged nozzle. Replace the nozzle, part # D0293205 NOZZLE:C2:ASS'Y

[copyaction]

Re: MPC2500 add toner - black, already replace toner pump

OK, let's try this one more time.

You have 3 symptoms:

1. Machine is showing add toner
2. Bar graph is showing zero bars.
3. Counter is printing light gray.

Thanks slimslob, those are exactly the symptoms it has.
I will order the nozzle.

[copier tech]

Re: MPC2500 add toner - black, already replace toner pump

I would also suspect the K dv unit, if a gear has failed it cant pull or stirr the dev/toner & then throw an add k toner message.

[logrady2331]

Re: MPC2500 add toner - black, already replace toner pump

I would check to see of the toner bottle itself is turning. I've seen it once in all the years I've been working on these things. I am assuming you are using OEM toner (if not, depending on the aftermarket source the bottle may be designed in such a way that you can't see it turn). If using OEM toner you can cheat the front door switch, put the machine is sim mode and run the add toner sim. If the toner bottle clutch is good you will see the bottle turning with add toner sim active. If it indeed does not turn then grab a hold of it and turn it by hand and see if the add toner message goes out. My guess is the toner bottle doesn't turn when trying too add toner.

[copyaction]

Re: MPC2500 add toner - black, already replace toner pump

I would check to see of the toner bottle itself is turning.

yes bottle is turning and yes oem toner.

went back today and manually added toner to developer unit (actually by hand, not in sim mode)
copies came back nice and dark and add toner icons are at proper level now.

toner nozzle is on backorder so I physically went in and tried to clear nozzle, will have to see if it continues to add toner now

so at this point add toner message is gone, toner icons at proper display, and copies nice and dark.

seems like if problem comes back, new toner nozzle should be next.

thanks for all of the input!