Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

[pajeroid]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

can you swap the mfp and nv into another unit? If it were me at this point I would be confirming that the parts in the trouble unit work (or do not work) in another copier.

Not at present as we haven't even got the C452 in stock now either - they sell anything with a plug on in here if you're not careful! Suprised this computer is still here

[DCPS]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

Hi.
Was there any solution to this problem at the end?
Thanks

[pajeroid]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

Hi.
Was there any solution to this problem at the end?
Thanks

Hi - Sorry no - The machine was collected by our dealer and we never heard the outcome. Was a very weird fault - I think more than likely it was something that took something else out unless fitted together.

Dave.

[bseeley1844]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

Very similar symptoms to that problem and fixed it by doing a physical and logical reformat to the hdd...

[bseeley1844]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

Hi - Sorry no - The machine was collected by our dealer and we never heard the outcome. Was a very weird fault - I think more than likely it was something that took something else out unless fitted together.

Dave.

I am still battling this issue. I reformatted HDD physcially and logically, it resolved the issue only to return a few weeks late. Same deal re format, resolved issue, came back...

Sometime it decides to work fine in color mode but black is still wild ( I know what he means it shifts the image up left right, off the page, sometime 3 pages later u will get what u were trying to get 3 pages ago but shifted and blurry. Not typical registration issues)

I have tried

MFP, Memory module, HDD, and now the NVRAM...any help on this would be appreciated...

[habik]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

I am still battling this issue. I reformatted HDD physcially and logically, it resolved the issue only to return a few weeks late. Same deal re format, resolved issue, came back...

Sometime it decides to work fine in color mode but black is still wild ( I know what he means it shifts the image up left right, off the page, sometime 3 pages later u will get what u were trying to get 3 pages ago but shifted and blurry. Not typical registration issues)

I have tried

MFP, Memory module, HDD, and now the NVRAM...any help on this would be appreciated...

I would do this before changing the Print Head Unit.

Reset the SKEW adjustment first(note down the initial numbers to see if it changes to different values after adjust). Then FULL initialise/ Reset background on stabiliser and then full gradation adjust.

[bseeley1844]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

Ok, I will give that a spin. I was thinking Print head but once Re-formatting the HDD twice fixed it, I couldn't wrap my head around why re formatting an HDD would fix a PH for a few weeks.

Today however for the first time reformatting the HDD did not resolve it, and stabilizer also NG. Different symptoms than the previous 2 trips where I could format, do a gradation and leave.

[bseeley1844]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

The last tech having "replace the machine" as the only fix combined with Konicas tech support being stunned by formatting the HDD fixing a quality issue does have me a little concerned though.

[Synaux]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

The last tech having "replace the machine" as the only fix combined with Konicas tech support being stunned by formatting the HDD fixing a quality issue does have me a little concerned though.

Then, have you tried to physically replace the HDD and cable to it? You might have a hard drive with some bad sectors?

To me this is some sort of data delivery corruption. There might be some rare defect on these MFP boards?
I notice that when pajeroid performed a test print he was getting a 169.254.xxx.xxx IP address, if the machine was connected to a working network then something was wrong.

You might want to consider removing the mfp board and give it a nice ISO Bath or 91% alcohol cleaning. Also recheck the data ribbons...

[pajeroid]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

Then, have you tried to physically replace the HDD and cable to it? You might have a hard drive with some bad sectors?

To me this is some sort of data delivery corruption. There might be some rare defect on these MFP boards?
I notice that when pajeroid performed a test print he was getting a 169.254.xxx.xxx IP address, if the machine was connected to a working network then something was wrong.

You might want to consider removing the mfp board and give it a nice ISO Bath or 91% alcohol cleaning. Also recheck the data ribbons...

Don't forget I tried the machine without a hard drive connected and turned off and it still gave the weird issues!

[Synaux]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

Don't forget I tried the machine without a hard drive connected and turned off and it still gave the weird issues!

I guess I did, until you reminded me haha...
But that is quite odd. Perhaps there is rare glitch in the firmware?

I dunno...you might want to check the capacitors. I don't know how much more work and money you want to put into this, but you could purchase a Blue ESR (or you might already have something that will do it) to check the capacitors while they are still on the circuit board. The reason why I mention this is because it is possible to have a blown capacitor but it looks physically fine.

[bseeley1844]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

Yes I have tried the HDD and the cables. I also tried the image registration sensors. Most recently I tried the PRCB and the image went from all messed up to blank. Thinking maybe I installed a bad board I sent it back. They sent me another one and same result. So now the image is blank. All I did was change the PRCB...made sure all connectors are good and upgraded FW.

I am going to try the laser next I guess ( would have already tried this if it wasnt for the HDD format fixing it), that made me think it was not the laser.

The MFP board is not bad, the NVRAM memory module and the HDD were also replaced but I somehow still feel like it is on the MFP assy because with this problem the touch screen constantly keeps locking up too and the MFP controls everything on the MFP. I actually somehow have an extra control panel i will also give that a shot for this issue.

Any other ideas? Even crazy ones let them rip this one is KICKING my ARS

[pajeroid]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

I sympathise with you matey! I too was pulling my hair out with this one - the control panel theory sounds possible - it is definately to do with something electrical.... Let me know how it goes!

[rindraintsoa]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

hi all,
I have exactly the same problem with my C452 machine, does anyone have any other suggestion? I also noticed that the touch panel is unresponsible just after the test page is outputted.

[Copier Builders SA]

Re: Konica C652 P6 P7 P9 P21 Codes - Serious Image Problems - CFC21 When Copying

I've had this once and replaced the main drive unit. There's an encoder disc that does colour registration and the disc is dirty and/or the sensor reading the disc. You can try and clean BUT be very careful! DO NOT try and get the decoder disc out without removing the drive unit. Quite a job too! Hope it helps.