Question about Konica Minolta bizhub Office Equipment & Supplies

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Hi all. I've been having a problem with my bizhub c554e that i've been working on. which is when i change the drum core (K) and also the drum blade, the printing for (K) became not satisfiable. which is then i check the developer unit (K) there are some developer that've been spill out a bit at the front. and also i'm having a problem with the gradation setting, i can't do the gradation setting at service mode. does the parts such as drum core, drum blade, itb, itb blade from c364 fittable to c554e?? hope you guys can share on how to solve the problems. tq

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Norman J Weimar Jr

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Black drum for the 554e is the same as the c364. Replace the drum as OEM not third party and DONT do it your self replace the whole drum from a Konicaminolta and the developer unit also

Btw, I’m available to help over the phone in case u need at

Posted on May 28, 2018


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  • 145 Answers

SOURCE: Konica 7022 F-26-3/2 L detect 0004 Konica 7022

Details Subject:
Background, overtoning, and/or F26-x codes.
Background, overtoning, and/or F26-x codes.
1. Overtoned developer.
Install fresh developer (PCUA 950237) and run the L-detect adjustment. To run the L-detect adjustment, perform the following:
a. Enter the 36 mode (power the copier ON while pressing the 3 and 6 keys).
b. Press [1. HV adjustment].
c. Press [Next] several times until the display reads [HV adj (L detection adj)].
d. Press [Start].
e. When the adjustment is complete, the machine will stop and a value is displayed in [RESULT].
f. If the developer was sampled properly during the L-detect adjustment, the value displayed in [RESULT] will be in the 60-75 range.
g. If the L-detect adjustment [RESULT] value is outside of the 60-75 range, than the TDS (toner density sensor) should be checked.

2. Failed TDS (toner density sensor).
To check the TDS, perform the following:
a. Remove the IP unit (if an IP unit is installed).
b. Remove the rear and left rear side cover.
c. Remove the board cover/D (p/n 26NA73280) for access to the PRDB.
d. Enter the 36 mode (turn the machine ON, while pressing the 3 and 6 keys).
e. Select [1. HV adjustment].
f. Press [NEXT] several times until the display reads [HV adj. (Toner auto supply)].
g. Locate TP14 (TDS AN) in the middle of the PRDB above CN 25.
h. Using a voltmeter (20V DC range), place the red meter lead on TP14 and the black meter lead to frame ground.
i. Press the START button on the control panel.
j. The analog voltage reading on the volt meter during sampling should be (with properly toned developer) between 1.2 and 2.0VDC. If the voltage reaches 2.0VDC, M4 (toner addition motor) will turn on and add toner. When the toner auto supply adjustment is finished the voltage should read approximately 1.8VDC.
k. If the voltage reading is not within this range, replace the developer (PCUA 950237), TDS (p/n 26NA88040) and run the l-detect adjustment while monitoring TP14 on the PRDB.

3. Failed write unit (the TCSB monitors dot pattern patches created on the drum and adjusts the laser output for Maximum Power Control).
If developer has been replaced, L-detect run, the TDS voltage checks, and the developer is still overtoning (M4 continuously adds toner), replace the write unit (p/n 26NA-6503).

4. Clogged machine filters.
Check all machine filters to verify they are not clogged. Clogged cooling fan filters prevent proper ventilation which can cause the adhesive on the write unit glass cleaner to melt due to high internal temperature, causing smears on the glass.
Note: Information provided by Matthew Kennedy, Perry Corporation.
SPECIAL NOTE: Solution contribution by Don St. Onge, Workgroup/SSD

Attachments:this is additional information on f-26-2
and i have given you info on f-26-3
you should revue all the information
hope that helps

Posted on Oct 14, 2008



  • 1 Answer

SOURCE: OKI B6300 Drum problem

Hello, com_jedi. I would suggest you contact the OKI Customer Support line in order to address this issue. The phone number is 1-800-654-3282 (800-OKIDATA). For your model unit you would hit options 1 then 4 to get to mono support.

It is possible that you purchased a defective consumable and OKI warranties them for 90 after the date of purchase. If this is a new drum/toner it may need to be replaced to determine if it was a bad chip in the cartridge or if there is some other issue with the unit that is causing the error.

It is also possible there is a misalignment with the sensor that is located under the drum unit. A support tech can walk you through the troublehshooting as it would be a bit difficult to do here.

I hope this helps!

Posted on Feb 12, 2009

Amanuel Tsige

  • 30 Answers

SOURCE: why my Fuji Xerox C525A color lazer printer print out not clear?

hi,clean corotron wires,drum unit & mirrors.send me result.
thank you.

Posted on Jun 08, 2009

SOURCE: Our bizhub-250 receives a C2557, need help with service mode

Utility/Counter -> Details -> [STOP][0][0][STOP][0][1]
Go to counter and clear the life of the developer and drums and then run F8 from functions.

Reset your Toners and Imaging units for Minolta Bizhub and CF series.

Posted on Sep 03, 2009

nikhil chachapara

  • 140 Answers

SOURCE: copy on canon ir400 copier

when you reset RAM the by default setting will be chang. try to get setting back.

Posted on Apr 23, 2011

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