How I Find the Problem and Fix a Konica Minolta C1070 Digital Printing Press, Didn't Expect This

One of many possible reasons that image density could be uneven for cyan, magenta, yellow or black. This was an interesting adventure, I just didn't understand what the issue was. You must understand how all the processes work in order to accurately troubleshoot the issue. Thanks for watching.
Patreon: / justaprinter

[@jorgeabed3400]

You are the best, I don't know what I would do without your videos. I am totally grateful to you!!!

[@kaiwang7655]

Interesting video about diagnosis the issue and finding a way to fix it. I wish I know my machine like you do. But always learn something new from your video. Thank you.

[@justaprinter]

Give it time. The more your explore and ask questions, the more you learn!

[@orestes29]

Hi Dan, I knew the moment that I saw your chart that this would be the issue. This is actually the way to go if you want to solve the uneven density problem in the scan direction on the C6500, since there is no adjustment for uneven density in the scan direction. It only took a few pieces of plain paper placed on one of those black tabs that are on each side of the drum. Those few millimeters may seem insignificant but affect image density by a large factor. It is even more prevalent on halftones, it wasn't printing yellow at all at one of the edges.

[@justaprinter]

You're the man! Just glad it wasn't the new drum!

[@isharaperera3]

I also learned a lot on my own. I learn more and more new things from you putting these things on youtube like this. Currently I am using only Xerox 5875 black and white laser machines. I still use a inkjet machines for color printing. I am a very new person in the field of printing. But one day I also hope to use machines with modern technology like you. My next hope is to add a konika minolta color machine to my business. One day I will be the owner of a large printing press like you. Thanks for sharing your knowledge 💛

[@snowboardnash]

Glad you got it fixed by the spacers. Just a tip, another area to check if it was not the drum is to check and clean the Toner Shield Glass. There might be dust or a haze. Another area would be at the laser units shield glass, you can always swapped CMY lasers for testing (time consuming). One last thing if the drum was bad I would have used it in Yellow since yellow can hide some imperfections of a drum better than others.

[@justaprinter]

Yes, swapping poor components to yellow has saved me many times. Ha!

[@greenatom]

It's a great feeling to find the simple solution to a perplexing problem.

[@justaprinter]

Yes it is!

[@typhoon05]

Always good to make a test print before and after you replace something. That way if its something that you may of accidentally done, its easier to diagnose. Also regarding generic vs OEM parts, yes they may be cheaper, but can cause other print quality issues, like more toner usage etc.

[@justaprinter]

Agreed, OEM is the best!

[@captainkeyboard1007]

Furthermore, using a generic product in the machine can defeat the purpose that is needed, by damaging its working parts. An ounce of prevention equals a pound of cure.

[@AlexKidd4Fun]

I love your videos - I'm learning a lot about printer repair, I have a machine I want to get going again!

[@justaprinter]

YOU CAN DO IT!

[@captainkeyboard1007]

Watching this show makes me appreciate using a color laser printer and printing on to laser paper. The problems with that cyan toner encourage me to adhere to using only the printer manufacturer's brand toner. The same thing goes for using my label printer. Better is to use the original and not an imitation; the imitation can never be duplicated.

[@justaprinter]

OEM is always best!

[@captainkeyboard1007]

@@justaprinter I am glad that we both do agree. The only paper I use in my Canon color laser printer is laser paper. I bought Office Max laser paper. When that supply ends, I will add Hammermill color laser printer as my only brand paper, while it is stored in my closet. I bought two ten packs cases. Better is to be overprepared than to be unprepared. Thank you for tapping or typing to me.

[@bearpump]

I was always reminded that the end customer probably will never see two books next to each other.

[@justaprinter]

Yup, I tell myself that too.

[@printshoptalk]

Bro you saved my ass again with this video! The Konica 230 and i thank you. lol

[@justaprinter]

Glad to help!

[@lenzielenski3276]

Not a tech but recall being told a number of times that ' best practice' is to do developer unit and developer at the same time. I remember something about old developer contaminating and then you end up paying for 2 sets of developer as well as the unit. FWIW

[@justaprinter]

Yup, thats what I'm hearing too. Thanks!

[@briandalton427]

I just replaced 3 of the 4 developer units and developer on all 4 units on my C1060. The 3 units I replaced are printing fine. But my BK developer is printing a bit off. That was me using new Developer in an old developer unit. I was also told about using new units when I swap developer. I will do this for now on. I don't like wasting developer. It's too expensive. Lol..

[@justaprinter]

Agreed. I'll keep this in mind when I start replacing developer units. Thanks for sharing!

[@sambell385]

Hey buddy if nobody has told you yet what we do in the field on production machines when we’re in a pinch especially , we pick on the yellow channel we put the bad parts in the yellow channel because yellow hardly ever exhibit any issues in the print reproduction unless you’re using heavy yellow on something

[@justaprinter]

Yup, I have done that a time or two. Keep the tips coming!

[@sambell385]

@@justaprinter Thanks for replying back ! if you need anything let me know I work on these machines every day for 31 years now

[@produceking71]

Love all your videos and cant wait for more.

[@justaprinter]

Great! Thanks for loving them! LOL

[@jameslim2923]

I miss this job i suggest when you check the cmyk quality you print a whole size of the paper by 100% each color in that way you will recognise easily if that problem is the drum, charge roller, or the developer and need keep reference the good printout cmyk so that you can compare the deference and know the problem easily

[@justaprinter]

Yes, that I what I do. Except I only print a 25 % tint. But I see what you are saying to check developer with 100%. Thanks!

[@MohamedYaseen1]

Here at India some tech's actually polish drum with metal polish, just a little polish or they even polish it with toner too...

[@justaprinter]

Wow, it would be great to have more durable drums that last longer.

[@csliao3]

It's like image transfer belt unit problem. Color printer, to determine the problem, please print a single color test pattern first to know which color has the problem.

[@justaprinter]

I forget what this problem was, sorry!

[@Alansari3902]

Good job 👍 I have a question about the ink the same ink tank that you have there on the bottom right, I have issue about how to add an ink for Konica bizhub C458

[@philanderson1200]

Very helpful. Thank you Dan 👍

[@justaprinter]

No problem, was fun wild goose chase. 👍

[@jameslim2923]

I suggest that you need to maintain room humidity of the room because the machine has a temperature requirement you need to control the temperature that the machine sense and the effect that you don't contral the temperature of the machine is when you print in volume the fuse is getting hotter and hotter the print color is changing

[@justaprinter]

That makes sense. I'll have to work on that.

[@rolomxm]

I saw you fixed the problem adjusting these black plastics. But if it was oem drum. I would started cleaning dust filters of laser unit

[@justaprinter]

Good to know! Thanks!

[@mandrael]

I tried some generic drums on my Minolta c308, but had bad experiences with them. Only problems with them, so I only use the original ones. They last mich longer than described. No problems whatsoever with the original ones.

[@rodneystagg1865]

We are getting the cyan and yellow developer changed tomorrow morning on our C1085.

[@justaprinter]

I've heard good things about 1085 machines. Do you like it?

[@rodneystagg1865]

@@justaprinter We had it 5 years, only 1.4 million clics on it. Had a lot of Communication Failures with the Fiery Servers. We are now on our 3rd Fiery Server and this one works, the previous 2 Fierys both failed to communicate with our C1085. C1085 is good, runs well, but Firies don't like it.

[@justaprinter]

@@rodneystagg1865 Interesting, thanks for sharing!

[@rizalaldiansyah6832]

on xerox this because developer powder uneven, try to check developing unit sir

[@justaprinter]

I thought that too, turned out to be distance between drum and developer roller.

[@bearpump]

Which machine of yours had the roller screw up behind the intermediate transfer belt?

[@justaprinter]

That happened on my C8000

[@locnguyen-cw4yw]

Please tell me how to fix this error C4505 on Konica C1060L. Thank you.

[@zafarrafiq6963]

Hey buddy you’re motivating us out here keep up the good work you’re like chief of everything and master of none how can I meet up with you

[@justaprinter]

Good to hear! Glad others are getting excited about print.

[@rumorscameras]

hey, so question, the closest to thequality or tech u have in a press is a color laser printer?

[@AndySoMeta]

I have no interest in buying a god damn printer, but I love these videos.

[@justaprinter]

Hahahahahaha, you are great.

[@siamacktaromian1212]

Hey Dan, do you have any experience with Xeikon 3300? Thanks!

[@torreyhuerta]

You're like the Sherlock Holmes of digital printers!

[@justaprinter]

There are better people than me out there. I'm still learning! :)

[@captainkeyboard1007]

@@justaprinter You are even better than me. I am just a typewriter and a keyboard specialist doing business productivity applications at my private home typing service. I use only laser paper in my laser printer, but you use varieties of paper. That practice makes you definitely professional because you are a real "printer." I am gaining clientele, because lots of people are resorting to do their own documents, spreadsheets, desktop publishing, even information management as in databases. I think that I do a little better database management by using a database program and not a spreadsheet program. After I bought my first computer in 2002, I made my own flyers, brochures and business cards by using Microsoft Publisher 2002, even though when it came on a separate disc with the Microsoft Office XP Professional suite.

[@gerardhaughey1]

Hey Dan, I have a 3070 which gets very light use. I only print greeting cards and I have less that 300,000 clicks on the machine after 3 years! I am having a on going problem with the developer unit. Quite often when printing a job with heavy toner coverage, I get the striping problem which points to the developer needing topping up. This can happen only a few days after having the developer changed for the same issue which does not makes sense to me. Magenta is the main offender but I have seen similar issues on other colours. I am told by the engineers that the machine is not distributing the developer quickly enough. I am printing on heavy stock which slows down the developer distribution mechanism in the developer unit. Have you seen or any other user seen similar problems with dev on these machines? Is this a design flaw? Thanks a million - Ger

[@sunbeamcreations4778]

Love your videos

[@justaprinter]

Good to hear! Thanks for letting me know!

[@westfield90]

Awesome video.

[@justaprinter]

Thanks!

[@royalway12]

How long have you been running the Generics in the K/M machines. I've found that it's hit and miss with Generics. Some work great, others wear early, and give voltage issues, along with copy quality problems. One extra service call on average for a Generic, and the cost savings is wiped out. Not trashing them, I've used them on and off for over 30 years with considerable success, and some really bad failures when it comes to the DPS not wanting to stay locked in on certain high volume applications. Thank you for the video.

[@justaprinter]

I tried it only once. It was garbage. I only run OEM now. The problem is that replacing the drum only replaces on of the three wear items in the drum unit.

[@daveastreet]

I have a 1070 that won't turn on, any ideas? There is power to it, and the green light on the printer screen comes on but doesn't power up. Tried resetting the breaker in the machine.

[@justaprinter]

Sorry, I don't know. Sounds like a bad power supply. Or maybe a bad switch. Test both switches.

[@muhamadakbarudin6783]

I have an error code C-4641 what should I do sir? thankyou

[@lawrence5039]

Hello, do you do it all without employees? You have a really great mix of equipment.

[@justaprinter]

There are other employees here. I'm the only one in production.

[@user-wk6gf1sn6m]

Good day, i have also problem with developer unit, but yellow Km 6000. I clean printer, corona and developer unit, and start printing 50 sheets SRA3, 10 sheets is good but then yellow color lay with big spot, open the printer and see many yellow toner in corona, in drum unit and developer unit, developer unit and drum unit is original used 10-12%, developer unit have gap 0,8 mm between magnetic rollers metering blades. Did you have the same problem? Thank you)

[@justaprinter]

I'm not sure but I would think developer or dev unit is to blame.

[@wachutube10]

Hi Dan. Am running the C3070. I am a bit lost on what could be my issue. My corona wires are barely hitting 30% before they begin to either show lines or fading. I print quite a bit of solid on card stock, but i feel I should get more percentage on them. Also, whenever I clean using the provided tool, I always seem to spread the dirt rather than clean it out such that if I was cleaning because of a faint line, i end up getting another 4 or 5 spread along the wire... Any thoughts on this? Are there other ways of cleaning other than the tool provided? What is the significance of the mesh grid and does it also affect the performance of the wire itself? Many thanks

[@justaprinter]

The wire and the grid both need to be clean. You could be wearing out oyour wires prematurely if other components are worn. (developer, drum, dev. unit) I'd replace anything that is over 250% and clean it all. Make sure calibrations are all done correctly.

[@wachutube10]

@@justaprinter its a very new machine, am at 500k clicks, so am nowhere near 250% on anything... Thanks though, ill keep checking...

[@Memez258]

@@wachutube10 I'd suggest using can air to blow off the toner before using the tool.

[@kabirpaul7677]

Where do you get the generic parts for the machine because they sure are hard to find them here in Canada.

[@justaprinter]

I bought them from Ebay. I don't recommend generic drums.

[@LabelsTech]

Low quality compatible drum? Have you noticed it before changing the drum? Try with another drum and see if it goes away.

[@LabelsTech]

Hahahaha wrote it just at the same time the idea came across your mind :)))

[@justaprinter]

That will happen. Haha!

[@ndizeyejoshua5036]

bizhub c3070L printer is new after installation all papers i print have holizontal lines, please help me

[@prasadmlv8267]

in my konica 70 hc printer I am getting error code C- E009. give me a solution sir. I have cleaned all the terminals and connecting jocks with IP ,as Jack's, terminal, PRCB board may have carbon formation. changed PRCB TO PRIPB CONNECTOR WIRE. STILL I AM GETTING THE SAME CODE. PLEASE HELP ME.

[@justaprinter]

Sorry, I cannot.

[@abdulmalikibrahim2673]

My office C2070 machine doesn't print back and front what do you think is the problem and what can I do please?

[@justaprinter]

I'd need more information to offer you a solution. Is there a code? What is happening?

[@chrishorsfall2022]

Are the drums light sensitive ie. UV light damages the coating?

[@justaprinter]

Yes, the drums don't like light.

[@darkzkie25]

whoa! i can use that knowledge on any unit that has a drum on it. :) hope i wont get into that trouble though haha

[@justaprinter]

Haha! Thats great. Bad news it's only a matter of time until trouble finds you! :)

[@tomasgribaudo3663]

sos muy bueno con las konica minolta

[@justaprinter]

Gracias

[@Sahil3374]

Sir.. In my machine bizhub 6000.. Drum gets dots/scratches very easily even if they are used 5%. It's happening with me for last 1 year. Tried changing developer, Charging, drum but still drum is getting dots.. Plz let me know the solution if any

[@justaprinter]

Does it happen with all colors?

[@algirdassokolnikas4087]

Hi once again :) It takes some time after you upload the video :) Maybe you have real opinion about generic drums?

[@justaprinter]

Howdy. The generic drums are no good. Partly because there is a wax bar and roller that should be replaced too. I only got a few weeks out of the generic drums.

[@squatchhammer7215]

What is the material on the drum? It might be a taper on the drum where it's might be outside the specs.

[@justaprinter]

I would like to know what they are made out of, I need to look into that!

[@bearpump]

www.inktechnologies.com/blog/what-is-an-opc-drum/

[@justaprinter]

@@bearpump Thanks Jeff, I love it when someone else does the leg-work of finding info for me! Now I want Konica to start making replaceable drums and cleaning blades that are simpler to replace like a Kodak Nexpress!

[@shajiantony7012]

I think possibility is cyan drum charge corona ,

[@justaprinter]

Thanks!

[@bearpump]

Would that adjustment be a “skosh” or a “tad”?

[@justaprinter]

Skosh and a tad. LOL!

[@alichughtai]

hi genies witch kind you are using drum ???

[@justaprinter]

I use oem Konica drums.

[@kedarnarvekar1048]

In india.. we don't change developer unit when we change developer everytime..

[@justaprinter]

Really? I'll keep that in mind. Thats how my c6500 was, be some told me that the new machines are different.

[@pramod35245]

nice video

[@justaprinter]

Thanks!

[@mr_vipul_patel1436]

Hey dan My mashin is konika 1060 problem is j-3201 code plz help

[@justaprinter]

Sorry, I don't know.

[@mohamedgreche2509]

Hi Man, good job as usually 👍 So, I have a Black Color shift on BizhubPRO C1070 and error code C-2214 two times in a row, now error appear on start up... I cleaned coronna, drums, belt gears... All visible parts and sensors, I hope it's not DDB or PRCB 😬 Please any idea to fix it 🙏🤔 Thx.

[@orestes29]

do you have the service manual for your machine? it should have a description for that code that will help you narrow it down.

[@mohamedgreche2509]

@@orestes29 Hi Ορέστης, thx for replay. In the service manual this code relates to a black drum motor fault, but via the i/o Check mode the 4 front motors are working correct l'y on all 3 speeds, so I've dismantled the rear machine and checked the 4 encoders and they looks good. The machine has 1.600,000 prints..

[@orestes29]

@@mohamedgreche2509 Can you copy and paste the manual's description on the code for me? I am not a tech and don't have free access to all KM service manuals. Maybe the cleaning blade has flipped on the K drum unit? Have you tried swapping it with e.g. Cyan and checked if the code changed?

[@justaprinter]

I had errors pointing to the drum motor on my C6500. Turned out to be dust on the encoder. Try to swap the encoder/motor with another color and see if the fault moved to that color. If not, your black developer might be shot and not imaging correctly? You could swap drums too. Highly doubt it is a board. Usually something simple. Let me know what you find!

[@mohamedgreche2509]

@@orestes29 Hi man, below the description in the manual : 2.15.10 C-2214 Code C-2214 Classification Main body: Drum motor abnormality Cause When the drum motor/K (M4) is active, an error detection signal of M4 is detected continuously for a specified period of time. Measures to take when an alert occurs The main body and the option stop immediately to deactivate the main relay. Estimated abnormal parts • Printer control board (PRCB) • Drum motor/K (M4) • Encoder sensor/K1 (EN58), encoder sensor/K2 (EN59) • DC power supply/2 (DCPS2) • Drum unit/K • Drum drive board (DDB) • Drum encoder/K Correction Note • The message "Please call service" is displayed on the panel. Solution 1. Check the drum unit and repair or replace it when there is any abnormality 2. Check the connector connection and the wiring between PRCB, and the motor and the sensor, and repair it when there is any abnormality. 3. Check the connector connection and the wiring between DDB and the motor, DDB and the PRCB and repair it when there is any abnormality. 4. Check the I/O drive of the motor and the coupling of the gear, and repair or replace it when there is any abnormality. (Wiring diagram: Main body (2/4): 17-O) 5. Check the connector connection and the wiring between DCPS2 and PRCB, and repair it when there is any abnormality. 6. Check the skew, the status of the slit, damage, dust of the drum encoder. Repair or replace it when there is any abnormality. Thx

[@prathmeshpol8899]

Which camera are u using?

[@justaprinter]

I use a Gopro Hero7, should probably get another camera.

[@ooftaZone]

Ha ha ha. If I had a customer pull out a loop. I be like get out town with that thing.

[@justaprinter]

LOL, ME TOO!

[@subhashsingh-if3yv]

C70hc mode Konica Minolta problem haf print light

[@justaprinter]

Could be wires or developer.

[@kedarnarvekar1048]

You print quantity jobs on this machine..no offset..n why In india konica minolta charge us 3.45 rupes fasma per copy A3

[@justaprinter]

Offset is expensive for me mostly because of labor. I used to have offset but from my calculations I was not as profitable when compared to digital. It fits for my customers.

[@serialcreative7130]

Good day sir, please what could be the cause of yellow not visible on a printout, and magenta splash on the machine? If possible I will love to have you contact me to share what and saying to you. It will be greatly appreciated. Thank you.

[@justaprinter]

It could be many things, start replacing the items that are past their life cycle. Or switch colors to determine faulty part.

[@jameslim2923]

To know that your developer has already attain there life span you need to print whole size color like cyan 100% the print output is not equal or solid cyan of whole size paper in that moment i recommend to replace both of the developer unit and the developer if you will only replace the developer it will not last long you will only waste the developer

[@justaprinter]

Yup, I have everything ready to go. Just waiting for some time to swap them out. Developer and dev units.

[@pramod35245]

hi from india

[@justaprinter]

Hello there!

[@manungamotu2662]

Hello I'm Manu I love watching your Videos on youtube and you have inspired me to start my own print shop here on the Gold Coast. I have just started a mini print shop here and I would like to know where you get your print job sheet from would you be able to send a blank one on pdf to me please so that i can use it in my shop too looking forward to seeing more videos from you I sent an email to you

[@justaprinter]

So exciting to start your own business! Let me know if I can help in any other way.

[@Cjuma44gmail]

Hello

[@alichughtai]

i want to know drum manufacturer

[@justaprinter]

I use Konica Drums

[@mayogrmayogr9007]

With auto balance you get to elimate this degrate of lighting. With photospectometer and a programm you get to fix that. Ps too many light to drums . Be careful 😋

[@justaprinter]

Yes, I am not strict about keeping light from the drums. I need to work on that.

[@cagrimatbaa3092]

Drum 4×335€ Developer K 1×108€ Developer C M Y 3×118€ Corona 4×22€ T.Belt 1×360€ Belt Blade 1×16€ Total 2260€ my parts just changed

[@justaprinter]

Sounds like fun!

[@cagrimatbaa3092]

@@justaprinter I dont understand

[@chrisp6608]

Try remove carona wire and clean behind it migh solve your problem.

[@justaprinter]

Turned out to be distance between the developer roller and drum. Doh!

[@bigjobs123]

life on a dev unit is 1.2 mil

[@justaprinter]

I'm beyond that now. But I'm prepare to change them as soon as I have problems. But I should probably just change them before I have problems.

[@rehmat-ealam9443]

Can I also work with you.? Whatever salary you will provide me I will be happy with that. Please give me opportunity to work with you.

[@justaprinter]

Sorry, not hiring. You can learn everything I know by just watching my videos.

[@anncharles7145]

They stole my $300

[@justaprinter]

Bummer.

[@woodenbeast9337]

Thats a copier

[@justaprinter]

You bet!