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shadows
10-21-2017, 10:10 AM
Hello need help :D
I install new drum unit and new developer unit on an Minolta Bizhub 421. I run in service mode TCR Adjustment the copier work fine but after 4 day cylinder was broken. I enter in service mode and i enter in service mode at "part counter" and i noticed the developer and drum is with this "--------------" I attach a pictures to see.What is the correct procedure to setup the drum unit and developer unit to install ???? I run only TCR Adjustment , I need to take another step ????

Thank You .

37948

Synthohol
10-21-2017, 03:59 PM
drum and developer are supplies not parts, that may be why there is no # listed.

allan
10-21-2017, 05:58 PM
What kind of damage. post a photo. That machine is working hard if its done 10K+ in 4 days.

shadows
10-21-2017, 06:55 PM
In 10 day the printing volume was 10.500 copies.
37950

but after i install drum and developer unit i run tcr adjusment , another operation needs to be done ???

Woxner
10-21-2017, 06:57 PM
the drum and dev have counters that need to be reset under parts counter before you do the tcr adjustment.

shadows
10-22-2017, 09:52 AM
Can you tell me what is the correct procedure in service mode after i install the drum unit and developer unit in bizhub???

copier tech
10-22-2017, 10:32 AM
Can you tell me what is the correct procedure in service mode after i install the drum unit and developer unit in bizhub???

The correct procedure is listed in the service manual.

"Service Mode screen"

Press [Imaging Process Adjustment].

2.
"Process screen"

Press [TCR Adjustment].

3.
"TCR Adjustment screen"

Press the Start key.

4.
Check to see if "OK is displayed, and also check the TCR adjustment data value.

Note

• The adjustment is completed in about 180 seconds.

• When there occurs a TCR adjustment error due to the developer agitating operation not completed

successfully, the message "operating ..." disappears and an error code is displayed


Are you rebuilding the drum or replacing complete unit?

shadows
10-22-2017, 11:14 AM
complete replacing with original drum unit and developer unit

copier tech
10-22-2017, 04:50 PM
complete replacing with original drum unit and developer unit

Your print sample shows lines, the drum is not being cleaned, but this has been replaced.

Are you using genuine KM toner?

shadows
10-22-2017, 06:16 PM
No , right now in copyer is not oem bizhub toner

copier tech
10-22-2017, 06:52 PM
No , right now in copyer is not oem bizhub toner

I suspect that will be your issue.

You’ve spent $$$ on drum & dev but cut costs on toner.
We call this false economy.

allan
10-23-2017, 12:11 AM
if there is no visible damage to the drum then just check and/or replace the cleaning blade. Could be a very old new unit??

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