KM BizHub 423 Refurbishing - What to inspect/clean/lubricate/replace ?

[Fritzy]

Hello All,

I recently picked up a KM BizHub 423 that I'm looking to refurbish for a friend.

I've done some initial testing and here are a few things I've noticed thus far:



Paper feeds through the paper trays and through the ADF just fine - no jams or misfeeds - even when duplex scanning/printing.
Prints work well, but have a horizontal band across them. Based on what I've read here, that is likely to be caused by worn fuser roller. The stripes I see on the page do align perfectly with the worn areas I see on the roller. I've already ordered a replacement to rebuild the fuser.
Faxes are very flakey. Sending faxes works most of the time, but it has issues receiving faxes reliably due to a 'protocol error'. I've also encountered a few B116 Errors when attempting to send faxes. I'm using the fax on a VoIP line (Spectrum Internet, Google Voice with an Obi-200 ATA device)


I've tracked down the Service Manual and have been looking through there, but I was hoping you could all help start me out with suggestions on what items to inspect/clean/lubricate/replace as part of the refurbishment to get it back into fighting shape! I was going to start new threads for the Fuser and Fax issues as I begin to work on those.

I'm new to working on MFPs but always like to learn new things (even on older tech) so at this point I don't know what I don't know, but I'm looking forward to the project and getting educated.

Let me know what you might need to know to help me out and I'll do my best to get you the information you need.

Thanks for the help!
-Fritz

[copyman]

That machine is pretty simple. But the fax was really bad, especially with VoIp. Replace or rebuild the image unit. New drum, Blade, Developer. Cheap to rebuild. Check rear dev mag roller spacer for wear. There is aftermarket with bearing sold.

Reset counters before replacing image unit.

Only other thing with quality issues on that series can be upper fuser roller worn, most of the time from thermistor contact. Aftermarket roller & thermistors also cheap.

Lot of info in this forums archives about this series. Was a very poplar model at one time and many sold.

[Synthohol]

Just a word of advice, the tray 1 feed assy is NOT like the other 3 series machines. There is an extra sensor on the 423 that is not in the slower models so if you are swapping things around, just keep that in mind ;)
You will phantom jam into oblivion.
Good luck.

[Fritzy]

That machine is pretty simple. But the fax was really bad, especially with VoIp. Replace or rebuild the image unit. New drum, Blade, Developer. Cheap to rebuild. Check rear dev mag roller spacer for wear. There is aftermarket with bearing sold.

Reset counters before replacing image unit.

Only other thing with quality issues on that series can be upper fuser roller worn, most of the time from thermistor contact. Aftermarket roller & thermistors also cheap.

Lot of info in this forums archives about this series. Was a very poplar model at one time and many sold.

Thanks Copyman. That's exactly the kind of information I'm looking for. I'll do some research into rebuilding the image unit, and poke around the forums some more for other good nuggets of information on this model. I have no idea what a mag roller spacer is yet, but I'll figure it out :)

By the way, you're spot-on about the upper fuser roller - it's most worn where the thermistors make contact with the roller.

[Fritzy]

Just a word of advice, the tray 1 feed assy is NOT like the other 3 series machines. There is an extra sensor on the 423 that is not in the slower models so if you are swapping things around, just keep that in mind ;)
You will phantom jam into oblivion.
Good luck.

Thank you Synthohol. Always good to know where the booby-traps can be found. I hate to think of what kind of day you had when you figured that one out!

[femaster]

Just a word of advice, the tray 1 feed assy is NOT like the other 3 series machines. There is an extra sensor on the 423 that is not in the slower models so if you are swapping things around, just keep that in mind ;)
You will phantom jam into oblivion.
Good luck.

Thank you Synthohol. Always good to know where the booby-traps can be found. I hate to think of what kind of day you had when you figured that one out!

Actually, it's both feed units. The 423 uses direct optical sensors in the paper path where as the other models in the 3 series use actuators. Below is a snip-it from the service manual that talks about the tray 2 transport sensor, but it apples to tray 1 as well, I just didn't clip that part.

55054

[Fritzy]

Actually, it's both feed units. The 423 uses direct optical sensors in the paper path where as the other models in the 3 series use actuators. Below is a snip-it from the service manual that talks about the tray 2 transport sensor, but it apples to tray 1 as well, I just didn't clip that part.

55054


Thanks for the additional insider knowledge femaster. Interesting to see some of the differing design decisions between models of the same series.

[allan]

What is the total count on that machine?

All depends on that. Its easy and cheap on these.

[Fritzy]

What is the total count on that machine?

All depends on that. Its easy and cheap on these.

I had intended to include the counts in my original post. Thanks for the reminder.

The mechanical counter on the front panel next to the toner indicates: 384257

The counts from the web interface are below.

Any thoughts on why the counter on the device is significantly different from the total in the web interface?

Meter Counts:

Total Counter


Total
242839


Total Duplex
5348


# of Originals
244128


# of Used Paper
237382


Copy Counter


Total
24234


Large Size
0


Print Counter


Total
218344


Large Size
0


Scan / Fax Counter



Print
Scans


Total
261
234064


Large Size
0
520






Fax TX
95


Fax RX
182

[allan]

Ok the machine had a board swap somewhere in its history. The mechanical counter is probably correct.
Its a low count for that machine.

I would do the feed clutches, the registration clutch and registration bushings. Feed rollers where needed. An Image unit rebuild including a new developer unit depending on the condition or the seals. A transfer roller and fuser rebuild and that should be a refurb.

2 x feed clutches.
1 x registration clutch.
4 x registration bushings.
6 x red feed rollers. 2 included for DF.
1 x seperation assy for DF.
1 x dev tank. or 1 x DS roll kit if dev tank seals looks ok.
1 x developer.
1 x drum.
1 x cleaning blade.
1 x transfer roller.
1 x upper fuser roller.
1 x lower fuser roller.
1 x after market thermistor kits. As per previous good advise.

What am I missing?

What you can leave out for now.
Clutches and registration parts, feed roller, df parts if its not jamming.

Make a video showing the condition of the image unit and fuser to give more advice on what to leave for now.

Clip the spring for the transfer roller after the 2 tight turns.

[copyman]

I had intended to include the counts in my original post. Thanks for the reminder.

The mechanical counter on the front panel next to the toner indicates: 384257

The counts from the web interface are below.

Any thoughts on why the counter on the device is significantly different from the total in the web interface?

Meter Counts:

Total Counter


Total
242839


Total Duplex
5348


# of Originals
244128


# of Used Paper
237382


Copy Counter


Total
24234


Large Size
0


Print Counter


Total
218344


Large Size
0


Scan / Fax Counter



Print
Scans


Total
261
234064


Large Size
0
520






Fax TX
95


Fax RX
182



Duplicate post

[copyman]

I had intended to include the counts in my original post. Thanks for the reminder.

The mechanical counter on the front panel next to the toner indicates: 384257

The counts from the web interface are below.

Any thoughts on why the counter on the device is significantly different from the total in the web interface?

Meter Counts:

Total Counter


Total
242839


Total Duplex
5348


# of Originals
244128


# of Used Paper
237382


Copy Counter


Total
24234


Large Size
0


Print Counter


Total
218344


Large Size
0


Scan / Fax Counter



Print
Scans


Total
261
234064


Large Size
0
520






Fax TX
95


Fax RX
182



That is still a high meter for that machine and wouldn't put much time or parts into it. If the machine is passing a page replacing what I suggested in previous post will cost around $100 USD and get the machine working decent.

Oh yea one other common issue with this machine is the white cover under the ADF comes off. Clean off old glue and use heavy duty Velcro squares (home depot, lowes, etc)

Do your friend a favor who is going to end up with this machine, Unset fax in service and remove the fax.....

[Fritzy]

Ok the machine had a board swap somewhere in its history. The mechanical counter is probably correct.
Its a low count for that machine.

I would do the feed clutches, the registration clutch and registration bushings. Feed rollers where needed. An Image unit rebuild including a new developer unit depending on the condition or the seals. A transfer roller and fuser rebuild and that should be a refurb.

2 x feed clutches.
1 x registration clutch.
4 x registration bushings.
6 x red feed rollers. 2 included for DF.
1 x seperation assy for DF.
1 x dev tank. or 1 x DS roll kit if dev tank seals looks ok.
1 x developer.
1 x drum.
1 x cleaning blade.
1 x transfer roller.
1 x upper fuser roller.
1 x lower fuser roller.
1 x after market thermistor kits. As per previous good advise.

What am I missing?

What you can leave out for now.
Clutches and registration parts, feed roller, df parts if its not jamming.

Make a video showing the condition of the image unit and fuser to give more advice on what to leave for now.

Clip the spring for the transfer roller after the 2 tight turns.


That is still a high meter for that machine and wouldn't put much time or parts into it. If the machine is passing a page replacing what I suggested in previous post will cost around $100 USD and get the machine working decent.

Oh yea one other common issue with this machine is the white cover under the ADF comes off. Clean off old glue and use heavy duty Velcro squares (home depot, lowes, etc)

Do your friend a favor who is going to end up with this machine, Unset fax in service and remove the fax.....


Allan, thanks for the exhaustive list of items I should be looking into. I really appreciate that! Since I'm not experiencing and jams I'll probably inspect some of those parts and replace if something looks worn out. Since the Fuser and Image unit are items both you and copyman suggested, I'll probably focus those first and evaluate the need for additional work after that.

Copyman - you're right; the white cover under the ADF is coming unstuck. Someone added some double-faced tape, but that too is failing. I have some heavy duty velcro and will remove the old stuff and put on the velcro. Thanks for that suggestion. It sounds like you have had some bad experiences with the Fax on these machines. That's too bad since my friend does a fair amount of Faxing (both receiving and sending). I saw a post here somewhere that suggested a firmware update for the B116 Fax errors. Would you know anything about that?

In general, should I be looking to update firmware on this machine to avoid some known issues, or is a firmware update like playing with fire? Firmware versions below, and thanks again to you both!:


ROM Version
MFP Controller BOOT Program A1UD0Y0-1E00-G00-02(00)
MFP Controller SubSet A1UD0Y0-1F00-G00-04(00)
MFP Controller A1UD0Y0-0100-G00-D6(00)
Operation Panel Message Data A1UD0Y0-8100-G00-D4-00
Fax Board Controller1 A22M0Y0-4000-G00-06(00)
Fax Board Controller2
Scanner A1UD0Y0-0023-G92-0F
Printer A1UD0Y0-0050-G00-15
ADF A1430Y0-0024-G00-12
Finisher
Panel CPU A0P00Y0-8900-G00-00
LCT
Loadable Device Driver
Voice Data A1UD0Y0-A100-G00-01
Movie Data A1UD0Y0-A000-G00-00
MFP Controller System A1UD0Y0-1000-G00-D6(00)
MFP Controller Print Controller A1UD0Y0-3000-G00-67
MFP Controller Print Controller Font A1UD0Y0-3F00-G00-0D
MFP Controller Print Controller Demo Page A1UD0Y0-3E00-G00-00
MFP Controller MIO A1UD0Y0-5000-G00-09(00)
MFP Controller PSWC A1UD0Y0-5100-G00-10(00)
MFP Controller MIB IF A1UD0Y0-5200-G00-00
MFP Controller IPP IF A1UD0Y0-5200-G00-00
MFP Controller Outside Controller IF
MFP Controller TCP/Socket A1UD0Y0-6300-G00-21(00)
MFP Controller OPEN API A1UD0Y0-7000-G00-13(00)
MFP Controller Operation Panel A1UD0Y0-8000-G00-D6(00)
MFP Controller CSRC Control Body A1UD0Y0-8300-G00-01
MFP Controller PIC A1UD0Y0-8200-G00-A5

[copyman]

Allan, thanks for the exhaustive list of items I should be looking into. I really appreciate that! Since I'm not experiencing and jams I'll probably inspect some of those parts and replace if something looks worn out. Since the Fuser and Image unit are items both you and copyman suggested, I'll probably focus those first and evaluate the need for additional work after that.

Copyman - you're right; the white cover under the ADF is coming unstuck. Someone added some double-faced tape, but that too is failing. I have some heavy duty velcro and will remove the old stuff and put on the velcro. Thanks for that suggestion. It sounds like you have had some bad experiences with the Fax on these machines. That's too bad since my friend does a fair amount of Faxing (both receiving and sending). I saw a post here somewhere that suggested a firmware update for the B116 Fax errors. Would you know anything about that?

In general, should I be looking to update firmware on this machine to avoid some known issues, or is a firmware update like playing with fire? Firmware versions below, and thanks again to you both!:


ROM Version
MFP Controller BOOT Program A1UD0Y0-1E00-G00-02(00)
MFP Controller SubSet A1UD0Y0-1F00-G00-04(00)
MFP Controller A1UD0Y0-0100-G00-D6(00)
Operation Panel Message Data A1UD0Y0-8100-G00-D4-00
Fax Board Controller1 A22M0Y0-4000-G00-06(00)
Fax Board Controller2
Scanner A1UD0Y0-0023-G92-0F
Printer A1UD0Y0-0050-G00-15
ADF A1430Y0-0024-G00-12
Finisher
Panel CPU A0P00Y0-8900-G00-00
LCT
Loadable Device Driver
Voice Data A1UD0Y0-A100-G00-01
Movie Data A1UD0Y0-A000-G00-00
MFP Controller System A1UD0Y0-1000-G00-D6(00)
MFP Controller Print Controller A1UD0Y0-3000-G00-67
MFP Controller Print Controller Font A1UD0Y0-3F00-G00-0D
MFP Controller Print Controller Demo Page A1UD0Y0-3E00-G00-00
MFP Controller MIO A1UD0Y0-5000-G00-09(00)
MFP Controller PSWC A1UD0Y0-5100-G00-10(00)
MFP Controller MIB IF A1UD0Y0-5200-G00-00
MFP Controller IPP IF A1UD0Y0-5200-G00-00
MFP Controller Outside Controller IF
MFP Controller TCP/Socket A1UD0Y0-6300-G00-21(00)
MFP Controller OPEN API A1UD0Y0-7000-G00-13(00)
MFP Controller Operation Panel A1UD0Y0-8000-G00-D6(00)
MFP Controller CSRC Control Body A1UD0Y0-8300-G00-01
MFP Controller PIC A1UD0Y0-8200-G00-A5


It's worth a shot to update FW for the fax. If it works it works. If not can buy fax boards cheap on internet, ebay.

[Gift]

As for the fax probs try this:

nTech Mode / Fax / Communication / Protocol / V34 off - V29 on

nTech Mode / Fax / Communication / Timer1 / T1 = 90s

nTech Mode / Fax / Communication / Others / Cording Ability = MH / MR / MMR
nTech Mode / Fax / Modem / V17 Send Max Speed / RX+TX = V14.4600

[allan]

With a care these machine goes way past 800K..

[allan]

Thank you Synthohol. Always good to know where the booby-traps can be found. I hate to think of what kind of day you had when you figured that one out!

We all had that day somewhere. My one was on a B42...

[allan]

As for the fax probs try this:

nTech Mode / Fax / Communication / Protocol / V34 off - V29 on

nTech Mode / Fax / Communication / Timer1 / T1 = 90s

nTech Mode / Fax / Communication / Others / Cording Ability = MH / MR / MMR
nTech Mode / Fax / Modem / V17 Send Max Speed / RX+TX = V14.4600


The good old days...

[techsxge]

If i have to refurbish a machine, i do the following:


1 - Check all Drum Units and replace if needed
2 - Replace developer "dust", A Bag of developer costs me like 5-10$ and hold for 1 color machine
3 - Check fusing Unit and replace if needed
4 - Check transferbelt and replace belt if needed
5 - Check Waste Toner Hoper
6 - Check Firmware and update if needed
7 - Remove all i-options
8 - Check for plastic parts that could break in the near future or are already broken
9 - Replace or Clean all rollers
10 - Adjust ADF if needed

[Fritzy]

Thanks for the additional input and suggestions. Looks like I have myself a good project to get started on this weekend. I'm going to start by pulling and inspecting some of the parts you all suggested. At the moment the only replacement part I have is the upper fuser roller, so I'll install that too. And I'm going to try those fax settings.

I recognize this tech is your profession and not a hobby, so I very much appreciate you sharing your institutional knowledge with a noob like myself. :)

Thanks for joining me on this adventure. I'll keep you posted.

[allan]

Thanks for the additional input and suggestions. Looks like I have myself a good project to get started on this weekend. I'm going to start by pulling and inspecting some of the parts you all suggested. At the moment the only replacement part I have is the upper fuser roller, so I'll install that too. And I'm going to try those fax settings.

I recognize this tech is your profession and not a hobby, so I very much appreciate you sharing your institutional knowledge with a noob like myself. :)

Thanks for joining me on this adventure. I'll keep you posted.

Some parts goes in "sets" like the drum and cleaning blade. Or the upper fuser roller and the thermistor kit. That will insure the best parts life,

[techsxge]

Depending on what MFP Model xou've got it might be worth to note that at the point you suspect an eletrical problem it is most likely better to replace the whole machine. If i have to keep the machine running for whatever reason i'll try to but its just too costly most of the time (Searching the Problem, make sure that it is not an user error) and then trying to get your hands on a healthy board.

[allan]

Depending on what MFP Model xou've got it might be worth to note that at the point you suspect an eletrical problem it is most likely better to replace the whole machine. If i have to keep the machine running for whatever reason i'll try to but its just too costly most of the time (Searching the Problem, make sure that it is not an user error) and then trying to get your hands on a healthy board.


At lease the electronics and PSU on these are rock solid. But yea not a bad idea to get a spare set of boards if possible.

[REGSIS]

With a care these machine goes way past 800K..

One of mines passed 1.2 mil last month......and still running. Hope it gets to 2 mil at least :)

[tsbservice]

40+ppm A3 model from past era should be capable of running it. Even latest 458e may hit that mark. Not sure about 450i though .

[techsxge]

We have a 558 running to the 2.500.000. mark with the smallest service ever done to a machine in my company. I am on site only to exchange drums from time to time and even have replaced the transfer belt only once.

[Fritzy]

One of mines passed 1.2 mil last month......and still running. Hope it gets to 2 mil at least :)


40+ppm A3 model from past era should be capable of running it. Even latest 458e may hit that mark. Not sure about 450i though .


We have a 558 running to the 2.500.000. mark with the smallest service ever done to a machine in my company. I am on site only to exchange drums from time to time and even have replaced the transfer belt only once.

At only 384K it sounds like the one I have is just getting broken in :)

[Fritzy]

As luck would have it I came across a Bizhub 36 (for free!). It's only got about 75K on the counter. It mostly seems to work, but prints are streaky, it occasionally jams, one of the ADF hinges is completely broken, and the ADF fails to feed. That's what I noticed so far... :)

It spent it's life in a dirty warehouse, it's filthy and banged up so I'm not surprised it's got some issues.

However, it looks like there are quite a few shared parts with the BH 423 I'm refurbishing, so it may be a good donor for spares and as a platform for me to experiment with.

I disassembled the fuser from both the 423 and 36. For reference, these are the part numbers labeled on the fusers:

BH-36: A1UDA721F0065082
BH-423: A1UDA721F1076368

The fuser from the BH-36 is definitely in better shape. Obviously less wear on the gears, thermistors and picker fingers so I'll be rebuilding this one for use in the BH-423.

A few questions on the rebuild:

1. I've cleaned all the parts and removed grease from the gears. What type of grease would you recommend I use? I have Superlube Silicone grease on hand. It should have the operating temperature properties necessary for use in the fuser, but I would like to know what you would recommend.
Here is the TDS: https://www.super-lube.com/Content/Images/uploaded/documents/TDS/Technical_Data_Sheet_Silicone_Lubricating_Grease.p df

2. I plan to order new thermistors, but I also see 'Thermistor Recover Tape' being sold at copiersupplystore.com (Image below). I was wondering if any of you have had experience refurbishing a thermistor with some fresh tape. I appears the thermistors have Kapton tape on them, and I have plenty of that around...

55131

[allan]

As luck would have it I came across a Bizhub 36 (for free!). It's only got about 75K on the counter. It mostly seems to work, but prints are streaky, it occasionally jams, one of the ADF hinges is completely broken, and the ADF fails to feed. That's what I noticed so far... :)

It spent it's life in a dirty warehouse, it's filthy and banged up so I'm not surprised it's got some issues.

However, it looks like there are quite a few shared parts with the BH 423 I'm refurbishing, so it may be a good donor for spares and as a platform for me to experiment with.

I disassembled the fuser from both the 423 and 36. For reference, these are the part numbers labeled on the fusers:

BH-36: A1UDA721F0065082
BH-423: A1UDA721F1076368

The fuser from the BH-36 is definitely in better shape. Obviously less wear on the gears, thermistors and picker fingers so I'll be rebuilding this one for use in the BH-423.

A few questions on the rebuild:

1. I've cleaned all the parts and removed grease from the gears. What type of grease would you recommend I use? I have Superlube Silicone grease on hand. It should have the operating temperature properties necessary for use in the fuser, but I would like to know what you would recommend.
Here is the TDS: https://www.super-lube.com/Content/Images/uploaded/documents/TDS/Technical_Data_Sheet_Silicone_Lubricating_Grease.p df

2. I plan to order new thermistors, but I also see 'Thermistor Recover Tape' being sold at copiersupplystore.com (Image below). I was wondering if any of you have had experience refurbishing a thermistor with some fresh tape. I appears the thermistors have Kapton tape on them, and I have plenty of that around...

55131

Yes the B36 is a good donor machine. The document feeder and bad software ruins the machine. Its the same engine but A4 only to reduce the footprint of the machine. Its known as a POS in the industry.
I would be careful to mess around with the thermistors. Any change in the contact surface could lead to over heating. You can try but I would start with the fuser temp set to -10 deg and if it fuses just leave it there. There is a thermal fuse to stop it from destroying the machine but not something I would play with.

Try a piece of Kapton tape on an old fuser and please let us know.

[ferro10]

As luck would have it I came across a Bizhub 36 (for free!). It's only got about 75K on the counter. It mostly seems to work, but prints are streaky, it occasionally jams, one of the ADF hinges is completely broken, and the ADF fails to feed. That's what I noticed so far... :)

It spent it's life in a dirty warehouse, it's filthy and banged up so I'm not surprised it's got some issues.

However, it looks like there are quite a few shared parts with the BH 423 I'm refurbishing, so it may be a good donor for spares and as a platform for me to experiment with.

I disassembled the fuser from both the 423 and 36. For reference, these are the part numbers labeled on the fusers:

BH-36: A1UDA721F0065082
BH-423: A1UDA721F1076368

The fuser from the BH-36 is definitely in better shape. Obviously less wear on the gears, thermistors and picker fingers so I'll be rebuilding this one for use in the BH-423.

A few questions on the rebuild:

1. I've cleaned all the parts and removed grease from the gears. What type of grease would you recommend I use? I have Superlube Silicone grease on hand. It should have the operating temperature properties necessary for use in the fuser, but I would like to know what you would recommend.
Here is the TDS: https://www.super-lube.com/Content/Images/uploaded/documents/TDS/Technical_Data_Sheet_Silicone_Lubricating_Grease.p df

2. I plan to order new thermistors, but I also see 'Thermistor Recover Tape' being sold at copiersupplystore.com (Image below). I was wondering if any of you have had experience refurbishing a thermistor with some fresh tape. I appears the thermistors have Kapton tape on them, and I have plenty of that around...

55131


I usually when I have to regenerate these fusers I take new thermistors directly. I feel much more peaceful with a new part especially when it comes to the temperature of the fuser

[Fritzy]

Thanks again for everyone's input on this. I thought I would give you an update on the work I've accomplished so far:

Fuser:

I installed new upper roller and thermistors - prints are much better now that the upper roller doesn't have worn spots, so that's a win!:D
@ferro10 and @allan - FYI, I did try adding a layer of Kapton tape on the old thermistor at first and ran it that way for a few weeks. I saw no issues, but ordered the new thermistors anyway for the reasons you had suggested.


Imaging Unit:

I've ordered parts to rebuild, but haven't started on this yet.


Fax:

I tried the fax settings suggested by @gift. Sending faxes is more reliable - I'd say about 75% go on the first try. Some require a second attempt. Receiving faxes is now working most of the time as well (I was experiencing about 90% failure rate previously). However, even though the faxes are received successfully, a 'protocol error' occurs after the fax prints. Haven't had a chance to try to sort that out yet.
As @copyman and others mentioned - the fax on this thing is pretty awful.


Paper feeding / Jams:

When I started working on this device, I thought it was feeding paper just fine. But I was doing most of my tests from Tray 2. I eventually noticed Tray1 would jam about every 20 pages or so. I found several similar issues reported on this forum and have checked/implemented many of the suggestions (cleaning / rollers / clutches / etc), but the issue persists. Also, thanks @Synthohol and @femaster for the information about the optical sensor in the feed assembly on the 423. I was about to try one from my donor Bizhub 36, but then I remembered your posts - that would have been wasted effort.
I'll create a new post with all the details of what I've tested and replaced along with some photos. Hopefully you will have some fresh ideas for me.


Thanks again everyone. I've been learning a lot.

[copyman]

Good to hear Fritzy. Thanks for the update.

Soon you will qualify to being a trained & certified CTN Technician.......

To complete certification next course is on an old color model, the C253:rolleyes:

[Hansoon]

old color model, the C253

YIKES!

Hans

[copyman]

YIKES!

Hans

Ha-ha, figured the C253 would be a step up from the 423 he is working on.....just a small step up:D

[Fritzy]

Good to hear Fritzy. Thanks for the update.

Soon you will qualify to being a trained & certified CTN Technician.......

To complete certification next course is on an old color model, the C253:rolleyes:

Thanks copyman. I'm looking forward to the next level in the curriculum.

However, I'm still trying to wrap my head around this buzzing, whirring paper-munching box of choreographed chaos and black dust. I can't imagine what kind of fun adding a rainbow of colors to the operation will bring. :D

[Fritzy]

Here is a link to my new thread for the paper jam issue:

KM BizHub 423 - Paper Jams - Tray 1 Only - Error 30-01 (https://www.copytechnet.com/forums/konica-minolta/170525-km-bizhub-423-paper-jams-tray-1-only-error-30-01-a.html)