Ricoh MP6002 Light prints/copies

[tufbnme]

Keeps going light. Performed all adjustments per service bulletin, replaced DV unit and DV.
Any suggestions?

[Boltaction]

Re: Ricoh MP6002 Light prints/copies

I've had an MP6002 go light on me 60k after a developer unit and material replacement with 180k total on the machine and it ended up being my drum.

Otherwise, I have problems with Ricoh B/W's going light, just a matter of getting 50k, 100k or 200k before they do.

[tufbnme]

Re: Ricoh MP6002 Light prints/copies

Drum has been replaced as well, using all OEM parts and supplies.

[slimslob]

Re: Ricoh MP6002 Light prints/copies

Replace the ID sensor. Someone in the past has cleaned if with alcohol which clouds the surface of the lens.

[slimslob]

Re: Ricoh MP6002 Light prints/copies

Good evening from Mexico.The illogical thing is that it also happens in new equipment.Question, when the impression is very pale, why does not it show that the toner level is low? Even the equipment is turned off and on?
Good evening from Mexico.The illogical thing is that it also happens in new equipment.Question, when the impression is very pale, why does not it show that the toner level is low? Even the equipment is turned off and on?

Simple, because the toner level is not low.

[Oldmantech]

Re: Ricoh MP6002 Light prints/copies

Try running SP3-001-002 ID sensor initialization. After that runs, check the ID sensor voltages. VSG should be 4.0V and VSP should be about 1/10 that (maybe 0.4V or close). These are SP3-003 1 & 2 respectively. If you see a 5.0V or 0V on any of those replace the ID sensor. If this machine is low volume try running SP2-962 forced process control. Then check copy quality and ID sensor again. Don't force tone the machine you will wind up with a mess. Let process control tone itself up. Also check drum conditions VL. SP3-902-008. This should be under +300. Make sure the developer unit filter is clean. If it clogs up pressure builds up in the dev unit and holds back toner during copying and that will not show low toner, just light copies.

[slimslob]

Re: Ricoh MP6002 Light prints/copies

Try running SP3-001-002 ID sensor initialization. After that runs, check the ID sensor voltages. VSG should be 4.0V and VSP should be about 1/10 that (maybe 0.4V or close). These are SP3-003 1 & 2 respectively. If you see a 5.0V or 0V on any of those replace the ID sensor. If this machine is low volume try running SP2-962 forced process control. Then check copy quality and ID sensor again. Don't force tone the machine you will wind up with a mess. Let process control tone itself up. Also check drum conditions VL. SP3-902-008. This should be under +300. Make sure the developer unit filter is clean. If it clogs up pressure builds up in the dev unit and holds back toner during copying and that will not show low toner, just light copies.

Waste of time if the sensor needs to be replaced.

[banginbishop]

Re: Ricoh MP6002 Light prints/copies

Taken from Ricoh training on process control

[Boltaction]

Re: Ricoh MP6002 Light prints/copies

Waste of time if the sensor needs to be replaced.

What's worse; a waste of time or a waste of time and money? Checking voltages before replacing the part is never a bad idea.

But I will say that replacing the ID sensor is more cost-effective than replacing the drum, provided that running SP3-001-002 and checking values points you in that direction.

[slimslob]

Re: Ricoh MP6002 Light prints/copies

Taken from Ricoh training on process control

Ricoh used to put a lot of useful information in the detailed descriptions portions of the service manual.

[qbert69]

Re: Ricoh MP6002 Light prints/copies

Are you using OEM Toner??? I have discovered that non OEM Toner tends to shed off the drum and foul the ID sensor. And yes, alcohol can fog the acrylic lens of the sensor!!!

Sent from my SM-N950U1 using Tapatalk

[slimslob]

Re: Ricoh MP6002 Light prints/copies

Are you using OEM Toner??? I have discovered that non OEM Toner tends to shed off the drum and foul the ID sensor. And yes, alcohol can fog the acrylic lens of the sensor!!!

Sent from my SM-N950U1 using Tapatalk

What I have encountered in the past is that the brush can cause dusting of the ID sensor when techs try to correct light print by forcing toner. This results in an over toned condition and toner dusting everywhere. At one time Ricoh had introduced a different brush to help correct a spotting problem with drums. Also helped with frequent dusting of the ID sensor.

[qbert69]

Re: Ricoh MP6002 Light prints/copies

What I have encountered in the past is that the brush can cause dusting of the ID sensor when techs try to correct light print by forcing toner. This results in an over toned condition and toner dusting everywhere. At one time Ricoh had introduced a different brush to help correct a spotting problem with drums. Also helped with frequent dusting of the ID sensor.

Also keeping the dev unit filters clean helps prevent excessive fouling![emoji15]

Sent from my SM-N950U1 using Tapatalk

[fshead]

Re: Ricoh MP6002 Light prints/copies

And dont clean the drum mylar with anything but water.
if you use alcohol or windex it will dry it out and destroy it..

[keithxxiii]

Re: Ricoh MP6002 Light prints/copies

Is the coverage of black on a high level? Try checking the settings of SP 2209 (toner supply rate).