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Is this OEM toner you're using? I'd check the initial reference value 05-2405 for K. Shouldn't be higher than 140 for that model. Try dropping the value.

Changed entire patch assy. Ran a 4719, so I assume the shutter was opening. It was all the colors, not just the black, which eliminates the only drum potential sensor. I'll stop and get some samples.

7506 with 300k. Won't maintain copy density. Run quality control and gamma adjustment, prints look good. Throughout a run, print print density starts to fade. Re calibrate and looks good again for a...

I ran into a similar problem on a 6506AC, that would read 1% new or partial. The machine would continue to run until it actually ran out of toner. Manager said don't worry about it. They always had...

All toner levels read 1%. I replaced the toner motor chip read assy from another machine. Same problem. Partial cartridges all read 1%, regardless of the partial. Tried several. Put a new one in and...

None of my 15's are good at holding color registration. Retrofit the color registration shutter solenoid bracket. You DON'T have to remove the registration roller to do it. Why they changed the...

LMAO

Logic PCB was the cure.

This started out as a no Magenta toner call. I had been there a week earlier for a courtesy call since I was in the area at another account. They had 2 full sets at that time. They have a 6506ac as...

Yes

Changed the sensor, then ADU PWB. Grasping at straws at that point. Tried PFC and Logic PWB's, ADU to main machine wiring harness.

Have a 6505 ac e010 won't clear. Fuser transport sensor checks fine, changed it anyway. According to the manual, ADU pcb is bad. Changed that, PFC pcb, logic pcb, ADU interface cable and even the...

Thanks, BC. Wound up being a logic PCB. Does Toshiba offer a readable full size schematic for this?

Have a 5005ac giving a false waste toner message. Sensor(s36) read bad in test mode. Replaced sensor to no effect. Can't find it on the wiring diagram. The grid location for it is blank. Anybody have...

Thanks BC. That was the ticket. I figured as much.

Yes. All my stuff has current firmware check for new versions weekly.

Have a strange LCF problem. Load both sides of the LCF and boot up. Shows both sides full. Run 1 copy, then right side shows empty. Reboot and will show full again. Key in 5 and will run all 5, then...

Have a strange LCF problem. Load both sides of the LCF and boot up. Shows both sides full. Run 1 copy, then right side shows empty. Reboot and will show full again. Key in 5 and will run all 5, then...

Thanks rusty. The memory was the problem.

Thanks rusty, I'll give that a shot. Had a bizhub where the memory was causing a problem that didn't make sense. Can't remeber what it was.

I have a 4505 jamming while duplexing. Only when I run color. I can run black and white all day. I ran a counter report and ran 50 copies black and white using them as 1-2 originals. Then went to...

Thanks for the info, rusty.

You wouldn't happen to have a number for that oil, would you?

Read the cited service bulletin. Your relevant "actual information " is there

I have several machines where I have to change the drums at less than half the yield. Image is lighter on the leading edge. Performing TSB-2055 05-2905 never totally eliminates it. Anybody have Ideas...