[Misc] light image in mp9000

[vargue]

hi fellas i have headache in mp 9000 first customer call me that image become blurred and toner faint . and machine do about 1,000k i assembled new drum and new developer .and then image counter become a bomb very good .after 7k or 8k image become very light.i checked hopper and auger .and toner agitator .and bottle round well. i did forced toner supply and it's become good again after 3 times. vsg 4.12 vsp 0,27 with woking machine vsp become 2.1 any clue please

[slimslob]

Re: light image in mp9000

Sounds to me like the cleaning brush is dumping toner down on the ID sensor. I had a 1060 a couple of years ago with a similar problem. Developer was new (less than 100k), drum was good. About every two weeks had to go clean the ID sensor. Replaced the cleaning brush with the one used on the newer models and no more problems.

[vargue]

Re: light image in mp9000

id sensor very clean no toner contaminated on sensor.every pm .still yester day i check it. it's clean.

[Tonerbomb]

Re: light image in mp9000

What is vRef and vT and vCONT ??? you've already gave us vsg and vsp.. 2.1 is way out of line. How much toner is in the bowl at the top of the auger from the toner bank???? forced toner add will mask the problem if there is toner in the toner hopper... the numbers are key to trouble shooting this system..............

[Moza]

Re: light image in mp9000

Have you checked if the Toner Supply Roller Motor is turning, its number 164 in Output check ? The only time ive seen faint copies without getting an SC495 would be if this motor isn't turning

[vargue]

Re: light image in mp9000

vref1.60 vt 1.50 i next step i will replace transfer unit.and there in hopper much quantity .not empty

[imaginemoko]

Re: light image in mp9000

SP 5804 164 Toner Supply Roller Motor could be this motor is defective, try to clean the pipes and inspect the Toner End Sensor at the Hopper. good luck Sir

[Moza]

Re: light image in mp9000

SP 5804 164 Toner Supply Roller Motor could be this motor is defective, try to clean the pipes and inspect the Toner End Sensor at the Hopper. good luck Sir

Like i said its more than likely this "Toner Supply Roller Motor" ! The toner hopper would be full because you don't have a toner supply problem as such but a developer agitation problem. If there was a toner supply issue you would get SC495. If you slide out the drum and developer unit then run SP 5804 164 you will see if the motor is working.

[vargue]

Re: light image in mp9000

yea i did that already .take off tank and make free run for one minute and there is three augers and all three working. i feel that there is some thing about toner would be bad

[slimslob]

Re: light image in mp9000

The bottom of the toner supply unit on top of the development unit where the toner drops into the developer could be clogged. Doesn't happen often, but does happen.

[vargue]

Re: light image in mp9000

than x guys for help i appreciated that upper unit .have 12 or 13 drop all throw toner well.and two white augers turn well.no sluggish today i used another toner and image become more clearly than first toner. in my country suffer from bad spar parts.

[Codex]

Re: light image in mp9000

if you dont have a SC 495, then try to clean the toner supply tubes inside the machine (rear).....near the toner supply pump, there is only ONE black tube, clean it.....and then do a TONER BANK SETUP.

[vargue]

Re: light image in mp9000

i did toner bank it's complete very fast .and pumb not give 495 but i suspect my be it's worn

[Cipher]

Re: light image in mp9000

Air flow around the drum area is important on high volume machines and is often overlooked by engineers.
Poor ventilation can cause intermittent blurring and deterioration of drum/dev conditions resulting in lighter prints.

I would recommend either replacing or at the very least vacing out all the filters at every drum or dev change.
There are also firmware updates that introduce SP modes for adjusting fan speed and extending fan timing.