C6500 assistance needed error C-2451

[plnewton]

Hi All,

I just wanted to as a question before I call for tech to come out and sort this out..

Here is the scenario.

we have purchased a used machine that we bought in and setup, we got the machine setup and running and ran a small test print of 100 sheets and it was fine, which was late in the afternoon so we shut it down at the end of the day and then started it the next morning but from that morning on we get error C-2451 each time it starts..

The error desciption for this code is:
When the developing motor/Y
(M20) is ON, the maximum
detection value of TCR sensor/Y
(TCRS/Y) is the specified value
and the difference between the
maximum detection value and
the minimum detection value is
over the specified value.


So we opened up the Toner Supply section and found that someone had taped up the supply shoots on both the Developers and the toner supply stations as well so clearly there was no toner being delivered.

Can anyone make any suggestions how to clear the error or has it stuffed up the Yellow Developer do you think?

Thanks in advance!!

[RRodgers]

Re: C6500 assistance needed error C-2451

Either run the toner supply mode for yellow or pop the cap and pour some toner in then run the dev motor for a bit to mix in the toner.

[plnewton]

Re: C6500 assistance needed error C-2451

Thanks for your help..

That seemed to have fixed that error but now I seem to have another

C-3102 which is:
When the fusing release home
sensor (PS16) is ON, PS16 is
not turned OFF within the specified
time after the fusing motor
(M29) is turned ON. When PS16
is OFF, PS16 is not turned ON
within the specified time after
M29 is turned ON

I am a little lost on this one though!!

[ni311]

Re: C6500 assistance needed error C-2451

Change or clean the one-way gear in the fusing unit. Check the link below:

http://www.copytechnet.com/forums/konica-minolta/51558-c6500-c-3102-power-up.html

PS: How do you run toner supply on this type of machine? I didn't know it is possible...

[plnewton]

Re: C6500 assistance needed error C-2451

I could not fine a way in the service manual to run toner supply either so I add the toner manually a cycled the power on the machine, repeated this a couple of times and to seems to have cleared the 2451 error.

I came in this morning and turned the machine on expecting the 3102 error but it came on fine, I have since ran a couple of hundred sheets through and it seems fine so I will see how it goes, if it keeps coming back then I will check the one way gears as you have suggested..

Thanks for your help!

[ni311]

Re: C6500 assistance needed error C-2451

So, you cannot do a toner supply on this machine. Is this true, RRodgers?

[Mr Spock]

Re: C6500 assistance needed error C-2451

So, you cannot do a toner supply on this machine. Is this true, RRodgers?

search the manuals for "toner refresh"

[RRodgers]

Re: C6500 assistance needed error C-2451

search the manuals for "toner refresh"

I was refering to "47" mode (well... no 47 mode in these anymore) but on the C500's I would just run the toner bottle spin mode (I forget what it was I think it was 1 - 50) And then you can just run the dev motor. But it's easier just to pop the top, pour some in and then run the agitation for that color.

[ni311]

Re: C6500 assistance needed error C-2451

Indeed, toner refresh it is a good enough equivalent to good old toner supply, I never thought in these terms. Now, the question: can you do a toner refresh while the machine is in code for low or high toner density?

[Rajeevk]

Re: C6500 assistance needed error C-2451

Swap suspected problem developing unit with the another developing unit (tape up the developer toner
entrance hole or leave toner hopper unit open with interlocks made so it will not be adding toner to the incorrect swapped
unit) and power ON the machine. If the problem follows the developing unit and a different service code is indicated, the
TDS sensor (p/n A03U M508 01) may have failed.
To verify, check the values of the sensors in the Service mode => Process adjustment => Sensor output check => #4
TCR sensors. Values should be around 130 (if no reading, check developing unit connections, spring contacts and for
loose wires). The higher the value, the more undertoned the developer. The lower the value, the more overtoned.
Try depleting toner, if needed, from the suspected unit by running halftones of test pattern 53, density of 255 (leaving
toner hopper unit open so it will not add toner). Check if the TCR value rises, achieving a value of 130.
Try adding toner to the suspected unit (closing the toner hopper unit so it will add) in the I/O mode (54-4 for Yellow, 54-5
for Magenta, 54-6 for Cyan or 54-7 for Black) to see if the suspected unit values go lower (if not, the toner hopper may be
packed or the toner motor has failed; test in I/O). Try to achieve the value of 130.
The above procedures might have to be done a couple of times to achieve the target values. Perform any required image
adjustments after the procedure has been done.
Malfunction Code Color
C-2451 Yellow
C-2452 Magenta
C-2453 Cyan
C-2454 Black

Hi All,

I just wanted to as a question before I call for tech to come out and sort this out..

Here is the scenario.

we have purchased a used machine that we bought in and setup, we got the machine setup and running and ran a small test print of 100 sheets and it was fine, which was late in the afternoon so we shut it down at the end of the day and then started it the next morning but from that morning on we get error C-2451 each time it starts..

The error desciption for this code is:
When the developing motor/Y
(M20) is ON, the maximum
detection value of TCR sensor/Y
(TCRS/Y) is the specified value
and the difference between the
maximum detection value and
the minimum detection value is
over the specified value.


So we opened up the Toner Supply section and found that someone had taped up the supply shoots on both the Developers and the toner supply stations as well so clearly there was no toner being delivered.

Can anyone make any suggestions how to clear the error or has it stuffed up the Yellow Developer do you think?

Thanks in advance!!

[ELVICYON]

Re: C6500 assistance needed error C-2451

Hi all,

my km c6500 gives me error c2454, I added black toner, then came eror c2453, I added cyan toner then error c2454 appears, then 2453, 2454, 2453... so on...

I checked the recovery toner box is filled with black toner and cyan toner (I've added)

I cannot check the values of sensors, because error c2454 or c2453 appears again, cannot do a test print. what should I do?

thanks in advance

[copymech]

Re: C6500 assistance needed error C-2451

Hello,

I suggest you start a new thread so the techs will see it.

[eifling]

Re: C6500 assistance needed error C-2451

Rajeevk isnt the color codes for the I/O access 00=yellow 03=magenta 06=cyan 09=black?

[ELVICYON]

Re: C6500 assistance needed error C-2451

Hi All,

I cant do refresh toner, run developing motor, read sensor meter etc.. power ON, error message appears.

adding toner manually doesn't works, they are flushed away to recovery toner box. then error message appears again

what's the big idea?

Regards
Elvin

[ELVICYON]

Re: C6500 assistance needed error C-2451

Hello senior and supertechnicians,

I've mentioned about error c2453 and 2454

this happened with c2453, I check the density for cyan toner
toner density for cyan is 222, and it stop with error c2453
I add cyan toner manually and run density sensor check, the value is 74, increasing 90, 120, 130, 140, until 219, 220 and 221 then stop with error c2453,

the toner waste box is filled with cyan toner, equal with cyan toner I've added

what's wrong?

please advice