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KIP Dude
resident
Joined: 14 Feb 2006
Posts: 164
Location: Outside USA
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 Posted: Thu Jun 22, 2006 2:39 am Post subject: Blank Prints |
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HELP!! Did a complete overhaul a week ago washing photoreceptor, dev unit, new wires, the works. Worked awesome for a week. Then today, they were having a toner issue (toner light flashing) when there was toner in the unit. I checked the toner sensors, cleaned them up a bit, put everything back together and I'm getting completely white prints. No error codes just blank copies. I've stopped it mid print and I'm not even getting image on the drum. Baffled!!
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Everytime something is made idiot proof... the world creates a better idiot! |
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Neil Johnston
doctor
Joined: 23 Dec 2005
Posts: 402
Location: Seattle, WA
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| Posted: Thu Jun 22, 2006 10:39 pm Post subject: |
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Is the process unit latch locked down? If not it can slide over and the Dev contacts dont make contact. Check the Dev contact plate anyway. Sounds like you're loosing bias.
Also, can the machine make a test print? I've see bad IF cards do this white print thing. If the test print from the engine works... look at the IF card. |
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KIP Dude
resident
Joined: 14 Feb 2006
Posts: 164
Location: Outside USA
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| Posted: Fri Jun 23, 2006 1:09 am Post subject: |
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No, test print white... everything is white. If I move the dev unit over to the right it will lose ground and I get a grey pirnt, but not solid black as I would expect.
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Everytime something is made idiot proof... the world creates a better idiot! |
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KIPDOCTOR
Site Admin
Joined: 31 Dec 1969
Posts: 1408
Location: Boston Area
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| Posted: Fri Jun 23, 2006 8:59 am Post subject: |
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I think maybe you have a toner supply issue. If it was good for a while after rebuilding the dev unit and then went bad, maybe the toner sensors got popped by static when you were vaccing out the unit.
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What we have gained in technology, we have lost in humanity. |
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KIP Dude
resident
Joined: 14 Feb 2006
Posts: 164
Location: Outside USA
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| Posted: Mon Jun 26, 2006 3:07 pm Post subject: |
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I'm looking into that, because I was having "toner add" light flashing although there was toner in the machine, but I've never had a toner sensor (let alone two) go bad before.
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Everytime something is made idiot proof... the world creates a better idiot! |
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KIP Dude
resident
Joined: 14 Feb 2006
Posts: 164
Location: Outside USA
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| Posted: Tue Jun 27, 2006 1:18 am Post subject: |
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Updated the eprom and now shows E-51-8 error. Still hunting down the root of the problem, but making headway.
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Everytime something is made idiot proof... the world creates a better idiot! |
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scott
doctor
Joined: 06 Dec 2004
Posts: 570
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| Posted: Tue Jun 27, 2006 1:45 am Post subject: |
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Make certain the spring that loads the white rollers in the middle of the regulation roller isn't out of place and shorting the regulation roller to ground.
Also, I have seen the contact plate the developer contacts touch short internally.
My two cents.
Scott |
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KIPDOCTOR
Site Admin
Joined: 31 Dec 1969
Posts: 1408
Location: Boston Area
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| Posted: Tue Jun 27, 2006 8:54 am Post subject: |
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Yes, most likely a bias leak from the dev unit given that code.
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What we have gained in technology, we have lost in humanity. |
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KIP Dude
resident
Joined: 14 Feb 2006
Posts: 164
Location: Outside USA
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| Posted: Wed Jun 28, 2006 12:57 am Post subject: |
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It's an original 2000 so it doesn't have the white rollers and the spring, but I've ordered a new blade so I'll get them. I'll let you know.
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Everytime something is made idiot proof... the world creates a better idiot! |
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KIP Dude
resident
Joined: 14 Feb 2006
Posts: 164
Location: Outside USA
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| Posted: Thu Jul 06, 2006 2:30 pm Post subject: |
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Replaced the cleaning blade and assembly with a new one that contains the white rollers and the spring, replaced supply roller, reg. roller, and developer roller. No change. I get an E-51-8 everytime??? Frusturating!
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Everytime something is made idiot proof... the world creates a better idiot! |
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scott
doctor
Joined: 06 Dec 2004
Posts: 570
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| Posted: Thu Jul 06, 2006 5:56 pm Post subject: |
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You need to isolate where the short in the bias system is.
With the dev unit out, check all the bias contacts on the DV unit for shorts to ground with an ohmmeter. With the DV unit still out, unplug the connectors at the board and use your meter to check for a short between the connectors and ground. High voltage likes to arc, so looking for dead shorts may not work, so if you still havent found a short, put the machine back together and unplug the bias connectors from the HV power supply. Let the machine cycle, if you get a E-51-8 the board is bad. If you don't, it's safe to assume the wiring between the HV supply and the DV unit is arcing.
I suspect you will find you are probably shorting to ground somewhere in your DV unit.
As a last resort, you might have an arcing issue with the bias socket assy.
6606400410 Bias Socket Assy, process drive page, ref.#25
Scott |
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KIP Dude
resident
Joined: 14 Feb 2006
Posts: 164
Location: Outside USA
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| Posted: Mon Jul 17, 2006 4:10 pm Post subject: |
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The machine is being replaced with a new 2000, but I will keep what you wrote in mind Scott, and update you once I get it back to my shop and can really get to the bottom of it. It's got over 1,000,000 square on it, so that may be playing into things, but it should still be fixable.
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Everytime something is made idiot proof... the world creates a better idiot! |
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scott
doctor
Joined: 06 Dec 2004
Posts: 570
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| Posted: Tue Jul 18, 2006 12:27 am Post subject: |
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Thanks for the update and please do post any questions or fixes you come up with.
Scott |
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peter_kelowna
medical school grad
Joined: 28 Nov 2006
Posts: 78
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| Posted: Fri Dec 01, 2006 12:51 am Post subject: E51-8 |
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Had the same thing after I rebuilt the developers on two 7000's. Turns out it was a "C clip" that came loose and was sitting amongst the gears. When I removed the "C clip" it must have stretched and came loose and fell a 1/2 inch down, which was enough to cause some arching of electricity. Just a shot in the dark,..but I thought I'd put in my two cents. Good luck.
A buddy of mine told me to make sure your spring contacts are secure and you have good connections. |
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sbb
medical school senior
Joined: 11 May 2010
Posts: 45
Location: Phil
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| Posted: Wed May 02, 2012 1:14 pm Post subject: |
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KIP Dude, I have the same problem. did you found a solution for this?
Thank you.
_________________
I killed a man
As the price of my transgressions,
Put the nails in His hands
For the cost of my redemption... |
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