Density drop on Katana 1350

[mbistric]

Dear All
I am Marin from Croatia and I have some problems with my katana . My Customer have 9 katanas ( 2 x 9000 , 3 x 1350 , 2 x 1356 , 2 x 1357 ) and they print telophone bills . Two 1350 have same problem with density dropping . That I can see on BAR code and OMR . I make PM , Put new DEV. unit and developer Transfer unit , corona units , new Drum , even new Drum shaft and machine stjil has problem . For 100 pages is ok then density drops ( Vsp is 0,9 VT is 3 ) and machine do nothing , then after 200pages is ok , nad so slovly density drops . Until machine ha 150K it prints almost white .
Does enybody have some idea , and maybe same problem that solve . Ricoh says that they dont have such problems ever .
Thank You in Advance and Best Regards
Marin

[pocket aces]

try this it worked for me.....set sp2506 to on then change it to 7 minutes what that will do is prosses control every 7 min.

[cobiray]

Your toner add tubes may be partially clogged if the density is light from lack of toner. Also check to see what your TD sensor is reading. The sensor might be failed or the wiper for it may be off of the developer auger inside the unit.

[mbistric]

Today I put new developer unit and nothing is better . Tubes are good , I cleaned it , and toner hopper is full . I alo set patterns during job to 50 , so machine check id patterns every 50 prints , and nothing .

[flo]

I have some Probs like this but only partially
Its the transfer Unit it give Overload to the Drum
First i tried to change all other Parts, but the same Prob after changing the Transferunit its never come up

[mbistric]

I changed Transfer unit also , and same problem . Ricoh told me that grounding of building is not good ????? And how then other machines work fine ? I am at dead end

[Polo-022]

Did ypu put another toner dispens. assy to see what happens? One hundred copies are very few to search furthermore...Quenching also.

[mbistric]

what do You mean under " toner dispens " . ? How can I check quenching ?

[Polo-022]

I mean Toner Dispensing Assembly or Toner Hopper, just above Developer Tank. It is full as you said but do a manual check for toner dropping into the developer case.
As for the Quenching Lamp make a search through diagnostics procedure SP 5-804..

[withnail]

Adjust SP2-209 Toner supply Rate from default 1300 to 1000, this extends the toner clutch on time. Set SP2-974 to zero allowing toner replenishment every copy if required (Default is every 2 copies) and reduce ID interval to every 5 copies in SP2-210

[iMind]

Turn off toner recycling.

[mbistric]

Toner rec. is off . I make changes as told . Now I have still poor density and VSP is 0.19 , and VT is 3.45 . That means that pattern od drum is OK and there is too much toner in the dev. unit !!? Is this right ?

[mbistric]

I I wont that transfer to transfer more toner from drum to paper should I increase or decrease Transfer current under 2 301 from 130 ? I try to put it on 100 , and 160 , but I didnt see any diference in density

[G'Man]

Hi,

Try replacing the Toner supply roller motor, especially if the TD sensor reading (VT) is Good when the copies are pale.
Have had a few of these play up.
G

[PinevskiS]

Pleace tell me your privte e-mail

[PinevskiS]

Dear All
I am Marin from Croatia and I have some problems with my katana . My Customer have 9 katanas ( 2 x 9000 , 3 x 1350 , 2 x 1356 , 2 x 1357 ) and they print telophone bills . Two 1350 have same problem with density dropping . That I can see on BAR code and OMR . I make PM , Put new DEV. unit and developer Transfer unit , corona units , new Drum , even new Drum shaft and machine stjil has problem . For 100 pages is ok then density drops ( Vsp is 0,9 VT is 3 ) and machine do nothing , then after 200pages is ok , nad so slovly density drops . Until machine ha 150K it prints almost white .
Does enybody have some idea , and maybe same problem that solve . Ricoh says that they dont have such problems ever .
Thank You in Advance and Best Regards
Marin
Pleace tell me your privte e-mail

[Dusty]

I can verify that diagnosis, I have had about six mp9000s that killed that motor. Plenty of toner in the hopper, but the motor (b2343055, I think) won't drive it into the dev unit. No codes, just light copies. Do an output check with the dev out and see if it turns. The output check number is near the end of the list.

[mbistric]

I have other things . MY mp9000 works fine , but all other katanas not , this faster one . My toner motor work I think . Is on yours machines motor was dead and didnt work at all or he was working but not good ? Because my motor work , but I cant tell if it is working ok . I even reduce toner supllay rate to 100 and still have same problems . I will order this motor to see What heapens with new motor , but I think motor is OK , specially I have 2 new Pro 1357 with only 1 500 000 and they have same problems .....

[Dusty]

The motor would usually turn if you removed the dev and forced the door switches, but you could easily stop it with your fingers. The toner roller would load it enough that it wouldn't turn. I could tell the motor was bad once it was out of the machine - you know how a bad stepper motor can feel 'notchy' sometimes? All of the bad ones I had were like that. New one turns smooth.

If I remember right, you can remove the right upper cover and see it turn, with everything assembled, except maybe the little fan towards the rear. Or you could look at the spindle of the motor from the rear. Can you force toner and get any density back? If so, it probably isn't the motor.

[gregoriojc]

I have thesame problem on mp9000/mp1300 light copies after around 10,000 copies I upgrade the firmware to version 6.04
but nothing happens, now i send a report to ricoh about this problem and wait for their answer hoping
I will get the solution that I will post here and share to all of you , wish me luck