EC1100 Australian Machine same as Versant C3100

[Dech1]

TO ANY PRODUCTION EXPERTS OUT THERE:

I've been a tech for 36 years:

Asking for help for the first time!!

Banding only on 300/350/400 gsm SRA3 black only (attached). at the trailing edge only.. does not do it on 80/150/200/250gsm. (Attached)Does not do it on Magenta,cyan,yellow.. Jam the machine and you can see it on the ibt belt image..

1-have changed the paper settings to slow right down
2- rebuilt the fixing unit
3- tried another IBT unit assy (no 13 and 14)
4- tried another 2ND BTR unit
5- Tried another Drum/dev drive motor unit
6- tried another main drive motor assy
7- HV pwb board
8- cleared NVM's
9- deleted Paper profiles and added a new using the embossed paper setting
10- Tried another regi unit assy
11- tried differant paper, at least 5 differant brands..
12- swopped drums
13- swopped 1st brt roller (Yellow to black and back to yellow)
14- swopped 1st btr end blocks
15- tried another paper vacuum (between btr and fixing)

its almost as if when the paper hits the 2Nd BTR it causes the black drum to judder.. ( If you pull out the duplex draw assembly, put the sra3 paper up to the 2nd btr roller, fold it up around the ibt belt towrds the black drum, you will see the banding is were the trail edge of the paper meets the black drum..)

Anyone have any ideas????????????????????

[xcopytech]

Impulse banding, slow down machine with nvm for 300 to 400 gsm paper

[adriansto]

Fuser pull paper out of 2nd BTR- IBT belt transfer zone. Check fuser speed. Clean or replace fuser speed sensor.
Printing with open door and see that SRA3 paper goes strait to fuser and do not fall down on V-transport.
Fuser pull paper out from transfer zone.

[xcopytech]

If you have banding only in black, only way to fix it on 300 to 400 gsm is set nvm for skip pitch mode.

[Dech1]

Fuser pull paper out of 2nd BTR- IBT belt transfer zone. Check fuser speed. Clean or replace fuser speed sensor.
Printing with open door and see that SRA3 paper goes strait to fuser and do not fall down on V-transport.
Fuser pull paper out from transfer zone.

Changed the whole fuser unit- still there...

[xcopytech]

Measure distance from lead edge of paper to band. If distance is 409mm then you have problem with impulse banding

[Dech1]

Measure distance from lead edge of paper to band. If distance is 409mm then you have problem with impulse banding

DID A 24HR STINT ON THIS MACHINE::::::::THANX FOR ALL YOUR ANSWERS, I AM TRIEING EVERYTHING, MUCH APPRECIATED.........................

392.0 mm.....

If you have banding only in black, only way to fix it on 300 to 400 gsm is set nvm for skip pitch mode.--- You would'nt happen to know these NVM's?
have searched through my manual and cant find them...

If you look at the Image on the paper-- turn the page around sothat the banding is now at the leading edge, move it over the 2nd BTR sothat the banding second line is over the center of the btr ( I have jammed the machine sothat the image is on the IBT Belt) look at the image on the IBT belt (trailing image) drum has finished putting the image down-- the banding is on the ibt.. bend the paper to follow the ibt towards the drum-- it meets up to the first line(banding line).. Almost as if the drum got a vibration from the paper hitting the 2nd BTR..

I removed all the covers and tried to cause the problem by hitting the btr while running the machine and tried slowing the drum down by grabbing the fly wheel weights.. totally differant banding lines...

This all happens before the paper gets to the fuser unit or even goes on the transport belt to the fuser unit....

[MRJESSE]

Skip Pitch Mode
NVM Read/Write > 740 492 > enter 1 for enable or 0 for disable

[Dech1]

Skip Pitch Mode
NVM Read/Write > 740 492 > enter 1 for enable or 0 for disable

Thanx but this nvm does not work

My 740-492 = 12287 not 0 or 1

But thanx

Found it:

740

494

Heavyweight Color Registration Improvement Switch

Switch that performs Color Reg Improvement Operation. 1: Run 0: Do not Run

image.png

No, did not make it beter...

I ran the same half tone on a V80/180i and a 170i all machines have the same mark, just lighter on the V80/170i/180i

[Dech1]

Here are the V80/180i/170i trailing edge... I have escalated this to Fujixerox main head office, hopefully they will come back with an answer.. If they have a fix, I'll post it..

[adriansto]

If you use same paper type ( same manufacturer, same weight ) but A3 size what is the result?

[Dech1]

If you use same paper type ( same manufacturer, same weight ) but A3 size what is the result?

A3 shorter, so not banding shows... no marks, only on SRA3..

[adriansto]

A3 shorter, so not banding shows... no marks, only on SRA3..

You said the line appear at 392 mm from feed edge, A3 = 420 mm, SRA3 = 450 mm so what is happened with the 30 mm plus of the feed edge? Or the 30 mm from trailing edge?

[Dech1]

You said the line appear at 392 mm from feed edge, A3 = 420 mm, SRA3 = 450 mm so what is happened with the 30 mm plus of the feed edge? Or the 30 mm from trailing edge?

sorry got measurments wrong.. from 426 to 450 Attached an a3 ... At the machine now...

If you look at the Image on the paper-- turn the page around sothat the banding is now at the leading edge, move it over the 2nd BTR sothat the banding second line is over the center of the btr ( I have jammed the machine sothat the image is on the IBT Belt) look at the image on the IBT belt (trailing image) drum has finished putting the image down-- the banding is on the ibt.. bend the paper to follow the ibt towards the drum-- it meets up to the first line(banding line).. Almost as if the drum got a vibration from the paper hitting the 2nd BTR..

Do the same with an A3 paper, the image has been put down before the paper hits the btr...

[adriansto]

If you cut the SRA3 so the new size is 297 x 450 mm and tell the printer you print on A3 paper what is the result ?