Originally Posted by
Machinercylr
What I am looking for is a solution to this problem, Machine made alot of copies after a fresh supply of toner was installed last weekend...following Monday morning, the error code c2454 popped up, I suspect developer change, but also looking at other posts that the yellow besides the Black as well, then reset the beast?
Thanks for all your help, and "Jersey Girl" one hand of applause for the tip on the Transfer Roller assy on that HP 4000. one side was higher that the other and I don't know how it was done by the customer,but they managed to break the assembly...Thanks again to a Great Forum...Steve
C-2454
When the developing motor/K (M23) is ON, the maximum detection value of TCR sensor/K (TCRS/K) is the specified value and the difference between the maximum detection value and the minimum detection value is over the specified value.
Printer control board (PRCB)
Developing motor/K (M23)
TCR sensor/K (TCRS/K)
It's not clear whether you are speaking about a fresh bottle of toner was installed, or whether you emptied the developer unit and recharged it.
Did you recharge the dev unit. If you had, did you follow procedure by doing a toner density initial adjust before anything else after the starter was put in place? If not, the machine will not know where the baseline is and this can cause some strange problems.
Also, check the connector at the front of the developer unit and ensure it is properly pushed in. In rare cases, the wires leading into the connector itself can break inside the insulation, giving the appearance they are connected, but really an intermittant is present.
In some cases, simply pulling out the process unit and pushing it back in firmly (don't slam it, but be agressive to ensure it is fully in) to be sure the connection at the back of the process unit to the main body is fully in.
And as the technical info regarding the error points out, the TCR sensor may have failed, or the PRCB may need replacing. I doubt it is the motor, these are very rare to fail.
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