Ricoh MPC2051 jam code J064

[anothertech]

Re: Ricoh MPC2051 jam code J064

What and where is the inverter sensor?

I think you might want to call in a tech to look at it.

[SteinarN]

Re: Ricoh MPC2051 jam code J064

I think you might want to call in a tech to look at it.

I think I have ordered the service manual/firmware from copier tech

I do work on mechanical and electrical stuff, and i have good knowledge about electrics, physics etc. So I think I will figure it out when I get the manual and can read description of codes, go into service mode, do the component tests etc.
The more complicated something is the more I take it as a challenge and the better the satisfaction when I get it fixed

I think i even have the manual already, stored on a computer at the business where I got this machine from. I downloaded it several years ago and I think they still have that particular pc. It's me that take care of their computers anyway the last few years.

[SteinarN]

Re: Ricoh MPC2051 jam code J064

So far, reading the manual, I have checked the inverter sensor. When into SP mode reading the sensor I see that it do in fact register paper in front of it. Without paper it has value 1, if I put paper in front of it closer than about 2cm it reads value 0. So, this sensor seems to work as far as I can tell.

PM parts seems to be a bit all over the place, need to study those more. Fuser unit has 53% life left, or was it 53% life used according one "counter".

I try to find exact explanation for code J064, which sensor is responsible for trigging that code.

Until later...

[SteinarN]

Re: Ricoh MPC2051 jam code J064

7504 64

Inverter Sensor

Inverter sensor does not turn off.

This is what the manual says about jam code 64.

This is getting interesting. The paper is still in front of the sensor when the machine stops. When there is paper in front of the sensor, shall the sensor then be on or off? When in service mode all sensors indicate value 0 (off) with paper in front of it, with no paper the sensors are reading 1 (on).

The explanation for the code seems to indicate that the controller is waiting for the sensor to read 0 (off) which means it waits for paper to be in front of the sensor. That means it is waiting for the paper to travel from the fuser exit sensor and to the inverter sensor, a distance of only some 40mm. When the machine stops the paper is in fact still in front of the sensor.

Or do the explanation for the code really mean that the machine looks for the paper to no more be in front of the sensor, that is waiting for the sensor to go to value 1 (on), and that there is just a mixup with regards to paper in front of and the value of the sensor?

[slimslob]

Re: Ricoh MPC2051 jam code J064

7504 64

Inverter Sensor

Inverter sensor does not turn off.

This is what the manual says about jam code 64.

This is getting interesting. The paper is still in front of the sensor when the machine stops. When there is paper in front of the sensor, shall the sensor then be on or off? When in service mode all sensors indicate value 0 (off) with paper in front of it, with no paper the sensors are reading 1 (on).

The explanation for the code seems to indicate that the controller is waiting for the sensor to read 0 (off) which means it waits for paper to be in front of the sensor. That means it is waiting for the paper to travel from the fuser exit sensor and to the inverter sensor, a distance of only some 40mm. When the machine stops the paper is in fact still in front of the sensor.

Or do the explanation for the code really mean that the machine looks for the paper to no more be in front of the sensor, that is waiting for the sensor to go to value 1 (on), and that there is just a mixup with regards to paper in front of and the value of the sensor?

Static tests of sensors often show them as apparent working but they fail dynamically when paper is passing through. This frequently true of sensors located above the fusing unit and is caused by prolonged exposure to heat. Sensors are not that expensive compared to hours of knocking your head against the walk,

[SteinarN]

Re: Ricoh MPC2051 jam code J064

Static tests of sensors often show them as apparent working but they fail dynamically when paper is passing through. This frequently true of sensors located above the fusing unit and is caused by prolonged exposure to heat. Sensors are not that expensive compared to hours of knocking your head against the walk,

Thank you!
I was going to ask how likely it could be that sensors indicated correctly when testing them statically like this but would be intermittently faulty under real use.

However, when doing more testing now I can clearly hear a grinding noice from the exit unit just before the machine stops, say a grinding noice for one sec and then the machine stops. I think I can see the paper speed slowing down for that second too, but I am not completely sure about that. I will take out the exit unit and have a closer look at it.
Anything spesific I should look for in that unit?

Regarding time, I am single, no woman or family to spend time on. I do this because it is interesting with all sorts of technical equipment, and I have the time. As I said, it is a challenge

[slimslob]

Re: Ricoh MPC2051 jam code J064

Thank you!
I was going to ask how likely it could be that sensors indicated correctly when testing them statically like this but would be intermittently faulty under real use.

However, when doing more testing now I can clearly hear a grinding noice from the exit unit just before the machine stops, say a grinding noice for one sec and then the machine stops. I think I can see the paper speed slowing down for that second too, but I am not completely sure about that. I will take out the exit unit and have a closer look at it.
Anything spesific I should look for in that unit?

Regarding time, I am single, no woman or family to spend time on. I do this because it is interesting with all sorts of technical equipment, and I have the time. As I said, it is a challenge

I was talking about billable time that you could be charging another customer.

[SteinarN]

Re: Ricoh MPC2051 jam code J064

I was talking about billable time that you could be charging another customer.

That would be a customer with a Carrier transport refrigeration unit That is my proper business.
But on my free time.... Need to do something

[SteinarN]

Re: Ricoh MPC2051 jam code J064

I took the fuser unit and disected it...
The black drum had a thick layer of toner (I think) residue on one end. I got that cleaned up fairly ok. Cleaned where it should be cleaned acording to the SM. And put it together.
But the gears are still very very worn.

Am still trying to figure out where the grinding noice might come from...

[Phil B.]

Re: Ricoh MPC2051 jam code J064

I took the fuser unit and disected it...
The black drum had a thick layer of toner (I think) residue on one end. I got that cleaned up fairly ok. Cleaned where it should be cleaned acording to the SM. And put it together.
But the gears are still very very worn.

Am still trying to figure out where the grinding noice might come from...

Gears worn and you don't think that could be a problem?
Even rookie techs don't make that ASSUMPTION

Sent from my SM-G960U using Tapatalk

[GIUBOSS]

Re: Ricoh MPC2051 jam code J064

I took the fuser unit and disected it...
The black drum had a thick layer of toner (I think) residue on one end. I got that cleaned up fairly ok. Cleaned where it should be cleaned acording to the SM. And put it together.
But the gears are still very very worn.

Am still trying to figure out where the grinding noice might come from...

See the photos I think the noise comes from the fusing roller or the film (red), attention the problem is inside where there is another metal roller has a painted surface (you will notice worn) and a lubricating felt that you will find broken down unevenly distributed along the support.
Are you 100% sure it won't jam during normal printing? Be careful, correct reassembly is not easy.

[SteinarN]

Re: Ricoh MPC2051 jam code J064

Gears worn and you don't think that could be a problem?
Even rookie techs don't make that ASSUMPTION

Sent from my SM-G960U using Tapatalk

I have absolutely not assumed that would not be a problem. I talked about the very worn gears in a previous post. I dont know why they are that worn with the low page count though. I consider ordering a new fuser unit.

I have tested more, also with A3.
What I find is that the paper is short of clearing the inverter sensor by only about 10mm, both with A4 and A3 paper. There is still this grinding noice the last one or half a second before the machine stops.

[SteinarN]

Re: Ricoh MPC2051 jam code J064

See the photos I think the noise comes from the fusing roller or the film (red), attention the problem is inside where there is another metal roller has a painted surface (you will notice worn) and a lubricating felt that you will find broken down unevenly distributed along the support.
Are you 100% sure it won't jam during normal printing? Be careful, correct reassembly is not easy.

I have already reassembled and tested.
One sided printing is no problem at all. I will study the manual further, and testing.

[slimslob]

Re: Ricoh MPC2051 jam code J064

I have absolutely not assumed that would not be a problem. I talked about the very worn gears in a previous post. I dont know why they are that worn with the low page count though. I consider ordering a new fuser unit.

I have tested more, also with A3.
What I find is that the paper is short of clearing the inverter sensor by only about 10mm, both with A4 and A3 paper. There is still this grinding noice the last one or half a second before the machine stops.

10mm sounds about right for the hysteresis delay of a sensor failing from excessive heat stress. As for the grinding noise you might want to check the clutches involved in the reversal of the rollers in the inverter section.

[SteinarN]

Re: Ricoh MPC2051 jam code J064

Normal printout tested on A3. Very good print quality, razor sharp. Pic have low quality because of file size, real printout is better.