bizhub c3351

[Gab]

I am planning to import some biz c3351. Are they good machines ?Any problems they have?

[copyman]

The C3351 is an older model but overall not a bad box. Good for low volume use. There were some improvements from the C3350. The main issues I've had with the machine is customer removes fuser because of jam and break the plastic guide on bottom of fuser. And if they copy a lot the scanner belt breaking.

[adecanmin]

It has built in Wi-Fi. The user as well as the tech interface is Konica Minolta. The c3350 was not and took a bit to get used to. There is a guide that crumbles over time that causes jams on 2 sided prints. To replace it, half the machine has to be disassembled. They get easier the more you do. The first one is rough. The drums won't go 60k before they start putting a line on the edge of the prints. In a low use environment not too bad. Larger volumes I would want an A3 in there.

[AlaskaCopyTech]

I service C3351s and am a big fan of the model just be sure to watch the age as these models are getting rather old and if you're looking into to getting a used and abused one it's probably not worth it.

[femaster]

There is a guide that crumbles over time that causes jams on 2 sided prints. To replace it, half the machine has to be disassembled. They get easier the more you do. The first one is rough.

This right here is the main reason I won't recommend a used unit of this style (C3350 or C3351). If the machine has spent the majority of it's life "on" and not in low power or sleep, It will have baked the hell out of the plastic guide above the fuser. That plastic is so brittle that even breathing on it wrong will cause the tiny fins on it to break off. Then like you said, in order to replace that guide you have disassemble half the machine. It's a real Pain in the ... to change out, much harder than it should be.

Another thing I've found in the C3350 models is that in order to replace that guide, you are removing the entire scanner assembly. When you pull out, or reinsert, the ribbon cables for the scanner on the main board, the traces on the end of the ribbon cables like to peal off resulting in a dead scanner. They may have improved that in the C3351 models, but we have never tried to replace the guide in that model after all the problems with the ribbon cables in the C3350. We stopped fixing the guides in those machines because every time we pulled one apart, we had to replace the ribbon cable for the scanner as well. After a couple repairs, we decided to just declared the machine dead once the plastic guide started to disintegrate.

[tsbservice]

This right here is the main reason I won't recommend a used unit of this style (C3350 or C3351). If the machine has spent the majority of it's life "on" and not in low power or sleep, It will have baked the hell out of the plastic guide above the fuser. That plastic is so brittle that even breathing on it wrong will cause the tiny fins on it to break off. Then like you said, in order to replace that guide you have disassemble half the machine. It's a real Pain in the ... to change out, much harder than it should be.

Another thing I've found in the C3350 models is that in order to replace that guide, you are removing the entire scanner assembly. When you pull out, or reinsert, the ribbon cables for the scanner on the main board, the traces on the end of the ribbon cables like to peal off resulting in a dead scanner. They may have improved that in the C3351 models, but we have never tried to replace the guide in that model after all the problems with the ribbon cables in the C3350. We stopped fixing the guides in those machines because every time we pulled one apart, we had to replace the ribbon cable for the scanner as well. After a couple repairs, we decided to just declared the machine dead once the plastic guide started to disintegrate.

Ouch...bookmarked this post to remember me when the time comes.

[Gab]

So is there any reliable A4 color konica minolta (or Ricoh or other model) machines (for used machines)?

[tsbservice]

It has built in Wi-Fi. The user as well as the tech interface is Konica Minolta. The c3350 was not and took a bit to get used to. There is a guide that crumbles over time that causes jams on 2 sided prints. To replace it, half the machine has to be disassembled. They get easier the more you do. The first one is rough. The drums won't go 60k before they start putting a line on the edge of the prints. In a low use environment not too bad. Larger volumes I would want an A3 in there.

This right here is the main reason I won't recommend a used unit of this style (C3350 or C3351). If the machine has spent the majority of it's life "on" and not in low power or sleep, It will have baked the hell out of the plastic guide above the fuser. That plastic is so brittle that even breathing on it wrong will cause the tiny fins on it to break off. Then like you said, in order to replace that guide you have disassemble half the machine. It's a real Pain in the ... to change out, much harder than it should be.

Another thing I've found in the C3350 models is that in order to replace that guide, you are removing the entire scanner assembly. When you pull out, or reinsert, the ribbon cables for the scanner on the main board, the traces on the end of the ribbon cables like to peal off resulting in a dead scanner. They may have improved that in the C3351 models, but we have never tried to replace the guide in that model after all the problems with the ribbon cables in the C3350. We stopped fixing the guides in those machines because every time we pulled one apart, we had to replace the ribbon cable for the scanner as well. After a couple repairs, we decided to just declared the machine dead once the plastic guide started to disintegrate.

Is this guide part number A3GN825600?

Screenshot 2025-06-30 104822.png

[adecanmin]

if you're talking about the guide that crumbles. It is 14.

[femaster]

Yup, as adecanmin stated, part #14 is the problem. It warps and cracks, and then you end up with jamming, especially on duplex pages.

[tsbservice]

if you're talking about the guide that crumbles. It is 14.

Thanks. Do you guys think it's good idea to replace whole duplex reverse drive assy (Position 30 - A3GNR70300)?

Screenshot 2025-06-30 163813.png

[femaster]

Thanks. Do you guys think it's good idea to replace whole duplex reverse drive assy (Position 30 - A3GNR70300)?

Screenshot 2025-06-30 163813.png

If you can get the assembly at a good price in comparison to what the machines are going to cost you, and what you are going to get in return for the machines, it might not be a bad idea. Replacing just the guide plate can be a real pain. Unfortunately, even with replacing the whole assembly you are nearly 2/3 of the way to replacing just the guide plate as the whole scanner assembly has to come off to replace that assembly.

Also be aware that since either way requires you to remove the scanner assembly, those ribbon cables that go to the CCD unit in the scanner are notorious for the traces pealing off the ends when they are removed from the main board. KM just used pressurized connectors on the board, so there is a lot of tension on the traces when removing and reinserting them. If KM had used a flip tab for pressure or something similar, it might not have been an issue. Just be prepared to possibly have to replace one or both of those ribbon cables as well. If there is no rush on selling/leasing the machines, maybe hold off on the purchase of the cables until you know for sure if you will need them. You might get lucky.

[tsbservice]

femaster
I heard you from the first post that is why I made bookmark to this topic.
Thanks toadecanmin and you I'm now prepared to face our first ever guide falling apart. I don't visited machine but my guts are telling me guide is gone.
We only have 3-4 of C3350/51 out in the field but it's just question of time I guess

We are always outnumbered never outgunned thanks to CTN!

[femaster]

tsbservice

Here is an example if you haven't ever seen the issue. This is a C3351 that was installed at the customer's site in April of 2019. We removed it from service in December of 2023, with about 225K pages on it, as we deemed it irreparable due to the guide plate. You can clearly see the warping and cracking, and if you zoom in, you should be able see the fins that have broken off from the entrance as well. It's a bit dark, but with a flash on, everything was overly washed out and was even harder to see.

IMG_3408.jpg

[adecanmin]

femaster
I heard you from the first post that is why I made bookmark to this topic.
Thanks toadecanmin and you I'm now prepared to face our first ever guide falling apart. I don't visited machine but my guts are telling me guide is gone.
We only have 3-4 of C3350/51 out in the field but it's just question of time I guess

We are always outnumbered never outgunned thanks to CTN!

Good luck
If you do this successfully, you'll feel like a super tech.