c250 Just try to fix me

[xpress]

We have a c250 that is not getting a warm fuser and gives codes for bad thermistors. Fuser works fine in other machines.

we switched out pwb-m and Pu-1 and tested in other machines and they work.

all the wiring from the main switch, to the boards, to the fuser and no help. Even the wiring from fuser to mainboard (grey ones it pulgs into, not power)

Getting also 2152, 5102, transfer belt seperation, main motor error, but funny enough they all want you to change the same parts.

Anything else? we've had this for weeks and the poor things just sitting in the corner

[Guest]

Try looking at main charge. Weird code problems are often caused by leaking charge.

[Haroldbfix]

We have a c250 that is not getting a warm fuser and gives codes for bad thermistors. Fuser works fine in other machines.

we switched out pwb-m and Pu-1 and tested in other machines and they work.

all the wiring from the main switch, to the boards, to the fuser and no help. Even the wiring from fuser to mainboard (grey ones it pulgs into, not power)

Getting also 2152, 5102, transfer belt seperation, main motor error, but funny enough they all want you to change the same parts.

Anything else? we've had this for weeks and the poor things just sitting in the corner

Does it code again after a trouble reset?

[masterteknicion]

For the 2152 code try this. Remove the screws on the right side of the machine that hold the metal plates for the trans belt. Close vertical door and reset code, if the code resets then put the screws back and your done.

Also see this bulletin.

[kmcopier]

The C2152 modification is for the C203,253,353 and not for the C250-252.

[xpress]

Try looking at main charge. Weird code problems are often caused by leaking charge.

What/where is the "main charge" and how would one check to see if it's leaking or not? Sorry if it's a stupid question, we're just absolutely stumped and have seemingly checked all possibilities, and none of our manuals have entries for anything in regards to this.

And yes, we get codes after every trouble reset, and often they are different.

[harry2007]

Same problems with other copiers- check or change main power switch or dor (front or right) interlock switch. Incredible ...but so real !

[albano]

HI, the firmware version is the latest ? there's another equipment too near, around the konica ?

[xpress]

Same problems with other copiers- check or change main power switch or dor (front or right) interlock switch. Incredible ...but so real !

Done...still no change

[pepper38_cnd]

Do trouble reset. Then power the machine on with the front door open, pull out 1 or 2 of the image units and reinsert them. Close the front door stabilization should start immediately with the main motor turning, if you get a code right away it may be a main motor problem or something is binding.

[xpress]

Do trouble reset. Then power the machine on with the front door open, pull out 1 or 2 of the image units and reinsert them. Close the front door stabilization should start immediately with the main motor turning, if you get a code right away it may be a main motor problem or something is binding.

We've done both, switched all the IUs, and switched the main motor as well, and things have not improved.

[pepper38_cnd]

Well this is a long shot but I had one that gave me serious grief, it turned out to be a bad IU constantly calling for toner. Take the exit tray cover off so you can see the toner add drives for all toners, when you start the machine after trouble reset watch and see if the toner add drive is chattering ( rocking back in forth ) note one drive motor for 2 toners. If it is pull out the toner cartridges and see which one has the spout clogged solid, if you find one in this condition Change the IU. I do know how stupid this sounds, but this did happen to me, I went the rout of replacing the toner drive and that is a big waste of time and energy.

[xpress]

well im not getting anything too crazy, it just has a 0 degrees C for the roller. Also i knowtaced even a trouble reset will pop the fuser code up as the machine is STATING, it doesn't even get to the main copy screen before the code appers.

[pepper38_cnd]

Well the only items in the fuser control are PU1, PWB-M, Power Supply, S1 and S2. Harry2007 already told you to change the the right interlock that is S2 which is what I would look at now since you say you have tried every thing else.

[xpress]

Yes, did that, Switched bouth of them, told you its a wierd one, So were switching another PWM-B and PU, but thats about it, we could make a stand alone fuser at this point from all we replaced

Switched Everything almost 2x now, and were testing parts in another c250 next to it as we go, like a check the broken check the working. the m1 code is now M3 due to me switching the motors, but the fuser is still cold. All the swiches work and everything "clicks' when closed and all that good stuff.