Color Displacement iRC3580Ne

[V-P]

Hi Folks,

I am having a headache while trying to fix a Canon refurbished iRC3580Ne.

It ran fine for the first 25.000 copies than ITB Belt was torn apart.

I replace it with another one and in less than 1000 copies it tears down the second one.

I thought the process unit might be somewhat distorted so I pulled the process unit from another working machine and switched it.

When I turn it on - I get color displacement in both directions (horizontal & vertical).

I put back the old process unit to see if the problem dis-appears but the displacement is still there.

So I tried everything I know (I am listing here)

1. RG - Clear (in level 2)
2. P-Print and DC-CON Clear (than put back old values)
3. MN CON Clear
4. Auto Color mismatch
5. Quick Adjust & Full Grad Adjust
6. Clean and Re clean the patch sensors
7. Checked SL1 for opening in Service mode
8. Switched the secondary transfer ext. roller
9. Switched the M1 motor
10. Switched the DC Controller
11. Switched the laser unit

I am out of ideas....

[teckat]

Re: Color Displacement iRC3580Ne

_{is issue before or after transfer ?}

Run a Large Paper Grid test print so u can check image on drum stop.

[V-P]

Re: Color Displacement iRC3580Ne

Issue is before transfer.

I am thinking of removing the DRUM DRIVE ASSEMBLY

But I saw some red painted "no touch" screws, so I am slightly confused.

On the manual there is nothing about removing the drum drive assy.

I am afraid it is somehow calibrated to the machine body (not sure though)

puhhh....

[teckat]

Re: Color Displacement iRC3580Ne

Issue is before transfer.

I am thinking of removing the DRUM DRIVE ASSEMBLY

But I saw some red painted "no touch" screws, so I am slightly confused.

On the manual there is nothing about removing the drum drive assy.

I am afraid it is somehow calibrated to the machine body (not sure though)

puhhh....

--------------------------------------------------------------------------------------

u are right ---no instructions exist


drum drive.JPG

[V-P]

Re: Color Displacement iRC3580Ne

just removed & replaced that too.

It looks normal. The rotation is smooth.

I don't know what else to try...

[teckat]

Re: Color Displacement iRC3580Ne

just removed & replaced that too.

It looks normal. The rotation is smooth.

I don't know what else to try...

================================================== ======

OK !!

so issue is before transfer to ITB ?

U mean GRID PATTERN is Offset in both directions (SUB & MAIN SCAN) on DRUM SURFACE

Stupid ? #1
did u try a reload of Firmware ?


Stupid ? #2
Remove the noise dampening pad for the Registration sensor flag and then performing Reg-Clear, Quick Adjust and then adjusting the IMG-REG

Stupid ? #3

Did u remove>clean & re-seat those SUB BOARDS on Main Pcb, ?


Main controller PCB (sub RA)
color space conversion, rotation for electronic sorting, binary processing, resolution conversion

Main controller PCB (sub PDRM-EF-A)
image processing for printer output (color space compression,background removal, LOG conversion, direct mapping, color balance, zoom fine adjustment, gradation conversion, screen
processing, framing, add-on)

Main controller PCB (sub SJ-A)
scanner interface, scanner image processing (resolution conversion, image rotation, compression/expansion)

Main controller PCB (sub LAN-bar-A)
LAN connection, HDD controller, HDD power supply

[V-P]

Re: Color Displacement iRC3580Ne

1. Issue is on both directions on belt. On drum it is hard to tell. Each drum has single color.

2. noise dampening pad - Where is that ?
I am really tired so excuse me.

3. I have already tried IMG-REG and I am successful to some degree but that is not the real deal (plus the machine should do it - not me)

4. No firmware yet. I didn't think of any connection

[teckat]

Re: Color Displacement iRC3580Ne

1. Issue is on both directions on belt. On drum it is hard to tell. Each drum has single color.

2. noise dampening pad - Where is that ?
I am really tired so excuse me.

3. I have already tried IMG-REG and I am successful to some degree but that is not the real deal (plus the machine should do it - not me)

4. No firmware yet. I didn't think of any connection

------------------------------------------------
Reg Flag i believe strikes pad ??

are all colors offset in all directions
Make a TWO COLOR GRID PRINT with two different colors ( use a combo of two colors)
u can also do 3 COLOR Grid Test prints-


The print commands start & arrive from the main controller

The DC controller computes the degree of displacement with reference to the position of the pattern detected; based on the result, the DC controller or the Main controller corrects the displacement for individual colors.


if the patch pattern is incorrect on drum surface> correction should take place on ITB from Patch Sensor

[V-P]

Re: Color Displacement iRC3580Ne

you know what is funny ?

In the beginning I took the process unit out of a working machine and put into this machine for testing.

Now I put back this unit to the belonging machine and now that other machine shows displacement.

It is becoming viral

I am starting to believe that the shasi of this refurbished machine has some issues and is somehow "destroying" the process units that I throw in.

[teckat]

Re: Color Displacement iRC3580Ne

you know what is funny ?

In the beginning I took the process unit out of a working machine and put into this machine for testing.

Now I put back this unit to the belonging machine and now that other machine shows displacement.

It is becoming viral

I am starting to believe that the shasi of this refurbished machine has some issues and is somehow "destroying" the process units that I throw in.

[V-P]

Re: Color Displacement iRC3580Ne

I am attaching 2 pics.

I have superimposed the PG6 A3 size from a good machine and a PG6 from this machine (did the same for PG10).

If you notice the PG-6 from the problematic machine is shorter (or reduced) than the good one.

PG-6 A3 size.jpgPG-10 A3 size.jpg

[teckat]

Re: Color Displacement iRC3580Ne

Weird

Magnification= image processing > by the Main Controller

Synchronization= in Sub Scanning Direction> is controlled by the DC Controller
==The DC controller generates the sub scanning sync signals (Y-TOP, M-TOP, C-TOP, Bk-TOP) of individual
colors based on the PTOP signal, and sends them to the Main Controller.

==When these signals arrive, the Main Controller generates video signals (VDO Y, VDO M, VDO C, VDO Bk) a specific period of time thereafter, and sends them to the DC controller. As a result, the laser drivers of individual colors go on to emit laser beams that scan the surface of the photosensitive drum starting at a specific point.

deal with the SUB SCAN issue first> Main Scan lines look like a minor blur



more stupid ?'s
did u try different paper feed locations

looks like Color Displacement Correction Control only take place for Main Scan slightly (DC PCB)

[copier tech]

Re: Color Displacement iRC3580Ne

Seen this fault before, because you have swapped parts & done various CLEARs You will need to re-enter the settings because you have clearer DC COn & MN CONT
Do you have the P-PRINT from when the m/c was new? If so input all those settings that should fix it.

[V-P]

Re: Color Displacement iRC3580Ne

to Teckat : Yes I tried 3 different paper sources.

To Copier Tech: Yes I did print P-PRINT prior to clearing DC-CON and MN-CON
and yes I did put back values after each trial.

[V-P]

Re: Color Displacement iRC3580Ne

I plan to flash the whole thing up to see if that makes any difference.

The only issue is that I don't want to loose the SEND & PCL functionality.

It is a refurbished machine and I don't have the codes.

What is a safe way to export the license files to a location and than import them again ?

thnx