Konica Minolta Bizhub c351

Enter in the service mode:
Press Utility key - Meter count - Details - Counter mode - select present parts life and reset(clear) the transfer roller counter.

Press "utility/counter" then "details" then stop, 0, 0, stop, 0, 1
This gets you into service mode.
Then press Counter the Life.
Be very careful not to mess with much in the service mode tho.
Good Luck andThank You for using Fixya

I believe the filter is located on the right or left side. The "Transfer Roller Unit" is the foam roller inside the right door.

go into service mode. Press the Utility/Counter button on your operation panel, select meter count, then detail, press stop,0,0,stop,0,1. This will put you in service mode. Find and press "COUNTER" button, Locate "LIFE COUNTERS", and clear OZONE filter. Always remember it, have a good time.......

I would advise having a copier technician replace those items it is not that hard to do but if you dont get the roller seated in the holder properly it can destroy the transfer belt and that could get expensive

In Service Mode -> Counter -> Life -> Select the one you want to reset and press 'C'

hi this unit located in the RIGHT DOOR

You need to go into tech rep mode to reset.
press: stop 0 0 stop 0 1, then 0 0 0 0 0 0 0 0, press enter, then press counter on the left, select life, then highlight image trans roller and press the C button, repeat for paper dust remover and exit tech rep mode

The C531 uses 4 toner cartridges and 4 corresponding imaging units. Each imaging unit has a waste compartment for the residue toner not transferred to the Image Transfer Belt (the waste bottle is for waste from this ITB). The residue toner could be reused.

It does not sound right that after 3-4K pages you have to change the IU. Just to be sure the IU you replaced looks like this?
.

Each IU should last about 50K pages (ie to be replaced after 5 toner cartridges).

To reset the life counters for the transfer roller & ozone filter you will need to enter the service mode.

To do this press utilty, meter count,details(if available), then stop, 0, 0, stop , 0, 1.
You should now be in tech rep mode, select counters then life.
Select the transfer roller/ozone filter button and press the C key on the keypad.
It should zero the life count.
Now press end, exit etc until you back at the copy screen.

Warning: Please do not reset or clear any other data within tech rep mode or you may inadvertantly affect the performance of you machine.

Hope this Helps.