iR105+ drum lines

[Oze]

I have 5xiR105+ that I'm currently responsible for servicing and at various times they develop a drum line which looks to be a leaking drum blade.
As part of the service I remove the AP kit...replace the blade..polish the drum...vacuum lumpy toner from the mag roller and surrounds...bed the blade...replace into the machines.
Now...my success rate has been pretty reasonable...til today.
I had 3 machines go down with drum lines at once.
One machine responded to the above service like a trooper but the other two have given me nightmares.
The marks LOOK like a leaking blade...the mark left on the drum polishes out well.....so all should be fine...but everything I've tried to date has failed.
Replacing the AP kit seems to do the trick...but $$$$....work won't be too thrilled if i put a new AP kit in everytime I can't nail a drum line.
Ideas?

[logonjim]

105 lines

Fit old type blade part no. FA4-1827-000 increase the pressure bit by bit if the drum is badly worn you may also need to change it , I have had this on a few 105s but they had over 5 mill on them

[Kopyrtek]

Check the reciprocating arm that forces the balde to travel back and forth.If it isnt moving the toner tends to stay in one place and leaks through the blade.

[davidj7]

replace toner

Replace the current toner you are using with a different one

[Oze]

Replaced the A.P Kit in one machine as it had done 1.3 million.
Seems to have done the trick.
The other machine I fitted yet another blade and it also seems to have done the trick.
All 4 machines happily chugging away.
A.P.Kits for the 105's are rated at 1 million...DOH...could have saved myself a few hours by checking the current meters against the recorded meters

[jonhs237]

Be aware that the waste toner auger drive gear assy can wear out on these machines. It is easy to check just run copies with the front cover off and the door cheated you should see the gears on the front turning. If they are not you will be out there replacing that blade daily. I have also found that certain voltage settings for the coronas if set too far out of door specs can cause frequent blade issues.

[Oze]

Be aware that the waste toner auger drive gear assy can wear out on these machines. It is easy to check just run copies with the front cover off and the door cheated you should see the gears on the front turning. If they are not you will be out there replacing that blade daily. I have also found that certain voltage settings for the coronas if set too far out of door specs can cause frequent blade issues.

Yes I've found quite a few handy tricks over the past few months.
Like adjusting the VD_OFST and DE_OFST settings to get rid of backgrounding

Check the reciprocating arm that forces the balde to travel back and forth.If it isnt moving the toner tends to stay in one place and leaks through the blade.

I'll be checking the AP Kit that I removed from the machine this week to see if the arm or the gear is worn.

[Guest]

If all checks are done and these parts look good or had been replaced, like the blade, screw cleaning, gears even the gear on the waste toner pipe in the back; Keep in mind guys about the waste toner drive ass'y that's behind the drum drive ass'y in the back of the unit, those go bad about 8 to 9 million. Also while messy with the cleaning blade ass'y make the pre-exposure lamp is clean and working. I had to replace one today.

[Oze]

All the machines that i'm working on have just clicked over the 4mil mark.
4 have had the drums replaced at various stages BEFORE their expected end of life.
One is due for changing though.
I am amazed,however,at the sheer number of clutches that I need to keep in stock for these machines...between the large paperdeck,rego clutch,delivery speed clutches and vertical feed clutches they were keeping me run of my feet replacing rusted out clutches.

[Oze]

Replaced the A.P Kit in one machine as it had done 1.3 million.
Seems to have done the trick.
The other machine I fitted yet another blade and it also seems to have done the trick.
All 4 machines happily chugging away.
A.P.Kits for the 105's are rated at 1 million...DOH...could have saved myself a few hours by checking the current meters against the recorded meters

DOH.....4 days later the drums lines came back
So far the machine had a new A.P.Kit drum had had numerous polishes with selenium oxide and the drum was only 1.3 million on the clock.
Went to the machine today and spent 4 hours chasing my tail....last resort...fitted a new drum that I had in stock...and of course it fixed the problem....for now.
As my boss told me today.....we always seem to be able to fix the issue in the short term but the drum lines always return.
We've escalated the issue to Canon.inc.
So now the machine has a new blade...new drum...new A.P.Kit and a new primary.
Tomorrow I'll put a new Pre-trans in the machine in case there's stray toner dropping from the coro....the scrapers are notorious for being unable to do their job correctly.
We ordered the reciprocating arms for the cleaning assembly and they arrived today.
I'll fit them to the existing AP kits and see if that helps.

[Kopyrtek]

Well sounds like you have covered all the bases so far.Please keep us up to date on what is going on.I am pretty sure you have checked, but make sure the drum heater is on too.

[Oze]

Yep..will do.
The drum heater was working...i checked when I swapped the drums over.
Something I DID notice though was that the contact brushes were worn(as is normal) but the baseplate for the heater was loose.
If the brushes had worn AND the baseplate was wobbling about then this could cause the brushes to loose contact periodically and the drum heater may not have been functioning correctly.
I fitted a new set of brushes and nipped up the baseplate.

[Oze]

Another update...
I had one of the other machines go down with a drum line that i again..could not get rid of.
The AP KIT was only replaced in mid December.
It had a drum line early last week and I polished the drum and fitted a new blade....the line disappeared.
By Wednesday of this week it had returned with a vengeance and no amount of polishing or blades was going to budge it.
I even got the tech who I replaced as onsite tech for the University back onsite to check it out and even HE couldn't rid the lines.
Bear in mind that all 5 machines have done 15million copies each without a major rebuild.
I spent a whole day on this machine getting nowhere....and then.....
I had a second hand drum in the workshop that was in unknown condition.
I found out that it was pretty much ok...no drum strikes....so for the purpose of testing I fitted this drum to the AP KIT...new reciprocating arm...new brushes...new blade...and BINGO...lines are gone.
The drum that came out had only done 2.8million and looks ok.
I'm going to try it in another machine if/when they go down with the line issue again.
It seems that rotating drums as necessary might be the way to beat this issue.

[Canuck]

Oh been here before...first adjust pre-transfer voltage...increase it in service mode....if you go too high you will get background. If no success(probably not) remove cleaner blade assembly. You will see a silver bias roller with a plastic mylar scoop up sheet in cleaner assembly. Clean the roll with alcohol and make sure contact is clean. Replace the scoop up sheet....i have two of them that like to run with no scoop up sheet. Make sure ends of large magnetic roll(with waste on it) are clean(scrapers on ends)....remove lint and paper fibers. I know someone that installed NP6050 cleaner blade to resolve. This is a common problem with 105's. As previously stated check cleaner drives first. Also make sure pre-exposure lamp is clean and doesn't have weak segments. Usuallly with bad drum heater you get copy quality problems usually when machine is first turned on and used...after a while fuser heat warms up drum. There is a DC EPROM upgrade for this but it only affects when copier is run in a specific range of relative humidity.Otherwise it has no affect..try silver roll and scoop up sheet fix....lemme know how you made out

[kingpd@businessprints.net]

Sounds like a ghost is living in the machines. Must be one of those anomalies. I too am curious to see how it works out.