MXM350 with L4-02

[tomislav]

Hi,

I have problem with Sharp MXM 350,show me error L4-02.
The drum motor rotates when check on service mode.
PLS help.

[JustManuals]

Re: MXM350 with L4-02

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[igi]

Re: MXM350 with L4-02

hi
the drum unit is not clening the toner out propertly
its accumulates and ads stress
there were many tech reports about this problem
the best things to do is
1-latest flimware(firmware)
2-service the drum unit
cheers

[CopierTechofOmens]

Re: MXM350 with L4-02

They updated part of the drive unit back in September 08.

Part Change [Section 4 Item 4] DV Drive Spring to Prevent L4-02, Blank
Copies, Abnormal Noise and/or Void Areas.
Details: The tension of the spring has been increased to prevent it from becoming disengaged.
Symptom: L4-02, Blank Copies, Abnormal Noise, Void Areas

New P/N:MSPRC2616FCZ1 DV drive spring

[PASTech]

Re: MXM350 with L4-02

We have a a few of these type of machines. The biggest thing we find is that the waste toner gets filled up quickly, well before the toner needs to be replaced. Empty out the waste toner from on the toner cartridge, that would be the first thing I would check. This causes the Drum to lock because it is all driven by the same motor.

Hope this helps

[CopierTechofOmens]

Re: MXM350 with L4-02

... The MXM350 eats it's own waste and reuses it

[PASTech]

Re: MXM350 with L4-02

... The MXM350 eats it's own waste and reuses it

What you mean? Aren't they like the ARM455s in that they have a toner/waste toner Cartridge combined?

[copyguy1]

Re: MXM350 with L4-02

TWo other things to look at. One is the dv box locking up Sharp had an issue for a while wherre tey had to change a bearing on it, they even sent me a couple of these. You might want to check your main drive for binding. How many pages on this unit?

[CopierTechofOmens]

Re: MXM350 with L4-02

What you mean? Aren't they like the ARM455s in that they have a toner/waste toner Cartridge combined?

On many of the sharps it recycles the waste toner back into the toner supply.

[ZOOTECH]

Re: MXM350 with L4-02

On many of the sharps it recycles the waste toner back into the toner supply.

My understanding is there was a separation between the new supply and the waste toner - basically a "bag" that fills the area where new toner came from as waste toner fills it up.
But my understanding could be totally off on this.

[tomislav]

Re: MXM350 with L4-02

hi
the drum unit is not clening the toner out propertly
its accumulates and ads stress
there were many tech reports about this problem
the best things to do is
1-latest flimware(firmware)
2-service the drum unit
cheers

I,update the firmware & service the drum unit,but i've still got L4-02.

[bilyahn]

Re: MXM350 with L4-02

I,update the firmware & service the drum unit,but i've still got L4-02.

If all of your components are moving freely (registration, developer, drum, main motor and fusing unit) then try replacing the charge unit. When does the L4 code appear? I have had each of the items above cause an L4 code at one time or another. Do you get the code when you run the MM in sim 6?

Good luck.

Bil

[copyguy1]

Re: MXM350 with L4-02

The other thing you may want to look at is there is a small set of gears on the bach of drum unit we had a few of these get stripped off. How many pages on machine?

[tomislav]

Re: MXM350 with L4-02

the other thing you may want to look at is there is a small set of gears on the bach of drum unit we had a few of these get stripped off. How many pages on machine?

hi,i found the problem,the grease on the gears in the drive unit was full of dirt,so the drive unit is turning hard.
Thanks for all reply's.

[gbfan]

Re: MXM350 with L4-02

A MXM-350 and an ARM-455 use the same toner, and yes there is a wall between the toner waste and fresh/new toner. I just pulled the cover off to verify as I thought it was walled also, If not there would be paperdust and other contaminants making its way into the good toner.