[CQ] 2nd sides are grey through a dual scan ADF (DF702)

[Guy Milner]

Hi,

Has anyone had the dual scan PWB go down on a C654e?
We have a customer with 2 x C654e Bizhubs and we have swapped the complete ADF with cables over, but still get 2nd sides grey, on the original machine. The fault didn't transfer with the adf.
Raised issue with Konica tech, but not much to go on....

Thanks,

Guy

[blackcat4866]

Re: 2nd sides are grey through a dual scan ADF (DF702)

There is a board that handles the CIS image data ... DSIPB... DISPB? Something like that. It sits right on the MFPB. That's where I would start. =^..^=

[Guy Milner]

Re: 2nd sides are grey through a dual scan ADF (DF702)

Thanks,
Has already been ordered for delivery tomorrow and hopefully will resolve the problem.
Will update.

[Guy Milner]

Re: 2nd sides are grey through a dual scan ADF (DF702)

Replaced the DSI PWB ( Dual Scan ) on Friday. No good, returned today with the same problem.
Next step is to reset the MFP board with the reset tool. Failing that, the MFP board itself.

[Guy Milner]

Re: 2nd sides are grey through a dual scan ADF (DF702)

Will try to attach samplesDual Scan fault.pdf

[Albonline]

Re: 2nd sides are grey through a dual scan ADF (DF702)

Will try to attach samples[ATTACH=CONFIG]30203[/ATTACH]

did you replace the small ribbon cable?

[Guy Milner]

Re: 2nd sides are grey through a dual scan ADF (DF702)

did you replace the small ribbon cable?

The cable from dual scan board to mfp board ? No, just the board.

[EarthKmTech]

Re: 2nd sides are grey through a dual scan ADF (DF702)

Replaced the DSI PWB ( Dual Scan ) on Friday. No good, returned today with the same problem.
Next step is to reset the MFP board with the reset tool. Failing that, the MFP board itself.

I have had second side image data corruption caused directly by the MFP board before.

(after absolutely everything else replaced first, it always leads us there eventually)

[allan]

Re: 2nd sides are grey through a dual scan ADF (DF702)

I have had second side image data corruption caused directly by the MFP board before.

(after absolutely everything else replaced first, it always leads us there eventually)

MFPB = Malfunctioning F$%^@& Printed Board.

[Albonline]

Re: 2nd sides are grey through a dual scan ADF (DF702)

The cable from dual scan board to mfp board ? No, just the board.

have had problems with the cable after people played with it.check for dented or bent or lifted traces.

[Guy Milner]

Re: 2nd sides are grey through a dual scan ADF (DF702)

This is turning out to be the worst problem I've had in 30 years!

Dual scan - side 2s are readable, but either a light grey background or quite heavy background and lines (intermittently, but when happens, it stays until you power off and on again - returns fairly quickly)

All started after a C-9401 error code - we replaced the CCD, CCD cable and cable clamps - as per the bulletin (the C-9401 has not returned since replacement of these parts)

Since the dual scan copy quality we have:

Swapped the complete ADF (CIS reader) - DF702 with all wiring.
Replaced the dual scan PWB (and now the ribbon cable between the two PWBs)
Used the reset tool to reset the MFP PWB
Today we replaced the MFP PWB.

The fault returned within 15 minutes!!!!!!

We swapped the CCD with a working machine's CCD - The fault returned (we tried this as the fault occurred after the original CCD replacement)

The fault returned!!!

We have replaced CCDs on other C654e machines, due to C-9401 error codes, with no further problems at all.

ONE IS PULLING ONE'S HAIR OUT!!!

Konica tech support DO NOT HAVE A SOLUTION for this??

HEEELLLLPPPPPP !!!!!

[allan]

Re: 2nd sides are grey through a dual scan ADF (DF702)

Could it be that its not getting the right white reference?

[SmellsHot]

Re: 2nd sides are grey through a dual scan ADF (DF702)

Contact your DSM and fill out a "customer one guarantee" claim. They will have to send the DSM out to look at the machine and try to fix it. If he cannot fix it. They will more than likely replace it for you!

[Guy Milner]

Re: 2nd sides are grey through a dual scan ADF (DF702)

We have now done the above. Konica Minolta UK Tech Support will visit this week.

[Guy Milner]

Re: 2nd sides are grey through a dual scan ADF (DF702)

Update, but still no conclusion.

KM tech specialist attended a week ago. The fault has gone, but only by disabling the CIS cleaner roller/brush.

Obviously this isn't an answer for us yet.....but at least the customer isn't calling in every 10 minute any more!

Still waiting to hear from KM what the next step is?