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

[pajeroid]

Good morning guys,

This machine failed overnight. The machine is scrambling images from internal prints (Demo page/Font Lists etc) and from computers (Print).

Machine throws C-FC21 when copying - no copies come out - doesn't get that far.

Have tried swopping removable memory (2Gb chip) and removing HDD.

State Confirmation ---> Memory (Scanner) Check Passes with OK OK.

State Confirmation ---> Memory (PRT) Check Fails with NG.

Was advised to swop MFP board and have done this but still the same problem.

Updated firmware.

Checked all connections (PH board flat cables etc)

All power outputs from the Main Power board seem to check out OK (24V Lines etc)

Machine also has C2253 / C2254 codes (2) logged as well as C2255 / C2256 (3).

Anybody had anything like this? I have attached the Demo Page with the bird.

C652 Problem.pdf

[Avskrap]

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

PRCB, perhaps? You've touched on the other relevant parts, MFPB, memory, HDD and so on.
If I were you, I'd change the PRCB.

[pajeroid]

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

Hi and thanks for the advice...

Just tried a PRCB and still the same issues. I can't understand why the machine would say Memory PRT NG if the main boards are OK?

[SmellsHot]

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

I'd give the Power supply a shot.....they can cause some weird issues...

[SmellsHot]

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

19.5.252 CFB00 to CFFA0: Abort code
 [Memory/HDD Adj.] 
[Memory Check]
 [Detail Check].
 [Memory/HDD Adj.] 

[pajeroid]

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

I'm just running the detailed memory check now.... another strange thing I just noticed-

I printed off a config page which came out half way down the page and then overlapped from the top.

Then I printed a PCL font list and the missing section of the config page printed on the PCL font list! See the attachment.

Weirrrrrrrrd!C652 Image Repeat.pdf

[minimerlin]

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

Had a similar problem on a C220 a few months back! It was the Print Unit (Laser). Got the codes, print scrambled etc even the shift of printout!

[pajeroid]

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

Thanks minimerlin,

Just tried the laser unit from a C452 and it's still the same. The part book says the parts are different but the connections are all the same and the machine didn't code on boot.

Could this be a compatability problem - or do you think I still have the same problem :-S

For reference our dealer technician has told me to try the following -

Old Firmware - tried D1
Faulty Memory DIMM on MFP-pwb - tried
Faulty MFP-pwb - tried
Cable between scanner and MFP-pwb faulty - not tried
Re-seat all connections on scanner/ccd pwb (not the CCD itself). - tried
HDD faulty - tried removing
Laser unit relay pwb faulty - not triedtried not tried

I am just about to try the Laser unit relay pwb now.

I will keep you posted.

[Albonline]

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

did you try the image registration sensors? are they clean? is the shutter opening? what do the registration v's look like on the transfer belt?

[habik]

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

did you try the image registration sensors? are they clean? is the shutter opening? what do the registration v's look like on the transfer belt?

That where I would usually start. Making sure everything is clean. Can you stabilise the image? Full initialise/reset background full gradation or it does not even get there?

Then perhaps try memory modules from another machine. Not just swap around or using just one. I had similar on c353. C- codes and blank display. No image printout though. Good luck.

[pajeroid]

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

That where I would usually start. Making sure everything is clean. Can you stabilise the image? Full initialise/reset background full gradation or it does not even get there?

Then perhaps try memory modules from another machine. Not just swap around or using just one. I had similar on c353. C- codes and blank display. No image printout though. Good luck.

I've tried the registration sensors and they were clean. The squares that are written on the belt are all over the place so the image is being written like that from the laser unit. The memory was from a different machine completley and this model only has 1 x 2Gb chip installed anyway.

I have also now tried....

The thick cable between the MFP board and the Scanner Assy (CCD etc)

Laser Unit Relay Board

NVRAM

Flat Cable between the MFP Board and the Laser Relay Board


Any more ideas???

[Zeldaman]

[DCPS]

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

Thanks minimerlin,

Just tried the laser unit from a C452 and it's still the same. The part book says the parts are different but the connections are all the same and the machine didn't code on boot.

Could this be a compatability problem - or do you think I still have the same problem :-S

Did you try with the correct Laser since then? It's very strange. Unless it's a wiring problem there must be an electronic part which is faulty. When i saw the picture i just thought this is either MFPB, PRCB or Laser. As you wrote you have already changed the MFPB and PRCB but laser was from a C452. There must be a reason why they have different part numbers. I haven't tried this till today so i am not sure if it should bring an error code though. Do you still have NG by memory PRT check?

[pajeroid]

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

Just tried the Transfer Belt but still the same - the stabilizer pattern is all screwed up on the belt if you pull it during Stabilization.

Can't try a new laser without ordering one - just seems strange that the memory check on the PRT comes up as NG. Stabilize always shows NG.

????

[Albonline]

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.