Toshiba estudio 2550c , CA00 error

[GIUBOSS]

Hi guys, I usually don't repair Toshiba, this box after the boot cycle indicates the error ca00 and it is almost impossible to enter service mode (I wanted to disable color registration), I saw on the transfer belt that the black alignment test is not printed. Some help...

[RobMorrison]

Unfortunately you cannot disable the colour registration. Only way to get the machine back is to find the fault.

You can remove the Process Unit (Image Unit on all other brands) and check the gears on the back. There is a drive gear on the back that you should be able to freely rotate. if this is seized up or really hard to turn there is not much choice but to replace that unit. They can be stripped and fixed but that it takes about 45mins to an hour dependant on if you have to strip the dev unit down.

[GIUBOSS]

Thank you for your reply, I will try in these days. I read around that it could also be caused by jammed paper, I have not done this check.

[irtek]

You can disable registration. Hold 0+8 and turn power on / machine will beep / release 0+8 / when service mode comes up there is no password just press OK / enter 4546 then press Start / setting should be 4 which is default / enter 0 and OK / shut machine down , registration is disabled. Use same process to enable after repair. Like mentioned the black developer gears are most likely cause, so it will feed paper but the black will most likely be missing.

[irtek]

Also, replacing the gears is just a band-aid. The proper repair is to rebuild the assembly using bearings to replace the plastic bushings and replace the seals. With the age of the machine it is also wise to replace the auger that has the sensor wiper on it because they get weak and will cause the assembly to overtone.

[GIUBOSS]

You can disable registration. Hold 0+8 and turn power on / machine will beep / release 0+8 / when service mode comes up there is no password just press OK / enter 4546 then press Start / setting should be 4 which is default / enter 0 and OK / shut machine down , registration is disabled. Use same process to enable after repair. Like mentioned the black developer gears are most likely cause, so it will feed paper but the black will most likely be missing.

Thank you very much I will let you know, in the meantime I purchased the transfer belt cleaning blade because I saw streaks of color on it.

[Rusty.Harris]

Thank you very much I will let you know, in the meantime I purchased the transfer belt cleaning blade because I saw streaks of color on it.

Old tip here. When I do routine maintenance, I pull the transfer belt cleaner, remove the blade, clean it, then look along the edge that contacts the belt.
If it has "shiny" areas long the edge, even if it isn't causing streaks, I replace it. Once they start getting slick, they will start streaking. LOL, about a few
days after you've been there causing a callback.
Same with the drum cleaner blades. Only takes a couple minutes. Might save a callback.

[clint@clintsimonsen.com]

Check how heavy the waste box is it may be that the black dev unit is empty, this can happen due to a few things but one to watch for is the drum getting wear lines towards the rear of the unit, or the grid/main charge.

[djbass]

[QUOTE=Rusty.Harris;n1622270]

Old tip here. When I do routine maintenance, I pull the transfer belt cleaner, remove the blade, clean it, then look along the edge that contacts the belt.
If it has "shiny" areas long the edge, even if it isn't causing streaks, I replace it. Once they start getting slick, they will start streaking. LOL, about a few
days after you've been there causing a callback./QUOTE]

Many of ours have over a million clicks on it, no one ever changes them LOL.

[GIUBOSS]

Check how heavy the waste box is it may be that the black dev unit is empty, this can happen due to a few things but one to watch for is the drum getting wear lines towards the rear of the unit, or the grid/main charge.

Thanks...I saw the developer unit, it has a good coverage density and also the weight itself.

[GIUBOSS]

Update: I disabled the color calibration at machine startup, the black development group rotates correctly and prints well so it prints and copies colors correctly but it dirties the sheets with magenta and yellow streaks. I cleaned the black charging wire and the grid, I restored the initially modified setting and now it seems not to give the code anymore, I'll see in the following days, in the meantime I will have to replace the 4 drum cleaning blades. Total pages produced 178k. Also replaced the transfer cleaning blade.Thanks to everyone for the advice.

[Rusty.Harris]

[QUOTE=djbass;n1622316]

Old tip here. When I do routine maintenance, I pull the transfer belt cleaner, remove the blade, clean it, then look along the edge that contacts the belt.
If it has "shiny" areas long the edge, even if it isn't causing streaks, I replace it. Once they start getting slick, they will start streaking. LOL, about a few
days after you've been there causing a callback./QUOTE]

Many of ours have over a million clicks on it, no one ever changes them LOL.

As long as you don't "break the seal" between the blade & the transfer belt or drum, probably so. For some reason they don't like to be disturbed LOL.

[GIUBOSS]

I tried tugging on them a bit and they seem to be well anchored to the seat. I have some Ricoh gaskets to cut, just in case.

[GIUBOSS]

I went today and replaced the 4 drum blades, now it doesn't leave any color streaks but it seems to get worse with black, a lot of toner comes out of the black developer unit in the center of the magnetic roller which then settles on the drum unit, the result is prints with dark gray bands, as if that wasn't enough sometimes it leaves the result of the color calibration with the colored squares at the bottom on the first color print. I will make a quote for replacing the black developer unit (98k pages done)