I've been fighting this problem for a couple weeks now. It's a very low volume machine only 7k color and 70k black. It prints black images just fine and prints poorly about 30% of the time on color images. When it messes up, the colors are completely off from one another. Its not the same each time. Black will be there, then sometimes Cyan, the Magenta is farther off then Yellow is even farther. Sometime all the colors are on the page but still about an inch or so off from lining up. Other times, black is there and blue and the magenta and yellow show up on the next print.
I can provide examples of prints if needed. Since black prints fine, I assumed it is a transfer belt issue and it seems to be slipping somehow. I have replaced the main drive motor, thinking it may be malfunctioning. I see no problems with the drive gear on the machine side or the drive coupler on the belt unit. I also replaced the drive roller inside the transfer belt unit and cleaned the unit of toner dust thoroughly. I also oiled each bearing in the belt unit. Still after that it prints bad color some of the time. I have not called the Toshiba tech-line yet as they never seem to happy to help with these models, but I will if needed. My next step would be to see if there is a bad clutch or gear in the main drive pack. The other brands we service, you can usually just buy a new drive pack prebuilt and install, but I dont see one for this model in the parts list. PLEASE, IDEAS ARE APPRECIATED!
PS, there is a new drum, blade, transfer blade, black dv installed recently because of reduced CQ from the years they were on the machine. Still using original transfer belt, but I figured it the reflective tape was that bad, it would error out.
We are down to 2 of these models in the field and I can't wait to get rid of them.
I can provide examples of prints if needed. Since black prints fine, I assumed it is a transfer belt issue and it seems to be slipping somehow. I have replaced the main drive motor, thinking it may be malfunctioning. I see no problems with the drive gear on the machine side or the drive coupler on the belt unit. I also replaced the drive roller inside the transfer belt unit and cleaned the unit of toner dust thoroughly. I also oiled each bearing in the belt unit. Still after that it prints bad color some of the time. I have not called the Toshiba tech-line yet as they never seem to happy to help with these models, but I will if needed. My next step would be to see if there is a bad clutch or gear in the main drive pack. The other brands we service, you can usually just buy a new drive pack prebuilt and install, but I dont see one for this model in the parts list. PLEASE, IDEAS ARE APPRECIATED!
PS, there is a new drum, blade, transfer blade, black dv installed recently because of reduced CQ from the years they were on the machine. Still using original transfer belt, but I figured it the reflective tape was that bad, it would error out.
We are down to 2 of these models in the field and I can't wait to get rid of them.
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