MPC4000 DF JAM CODE 001

[kannuki2]

Hi All,

I've ran into a weird symptoms with a B802 or model DF3010 Document Feeder. It detects a "P" jam and displayed a Jam code 001 on screen will not go away.

So Far, I've replaced new DF main board, all sensors (reg, exit, inverter, feed cover sensor). Input check show sensors are working great and I cleaned all the black felts at registration, exit sensor, and inverter sensor.

I've attached a picture of the df electrical component for easy identification. df electrical.pdf

[slimslob]

Re: MPC4000 DF JAM CODE 001

In a jam situation, if the machine does not see the necessary door being opened and closed, the jam message will not be cleared. With the DF it could be the top open sensor or the DF up sensor. If only one is seen opened and closed. Jam 001 will then be shown. 001 is a jam at power on or door closing.

[kannuki2]

Re: MPC4000 DF JAM CODE 001

Thanks for your help, slimslob. Several of my senior techs suggested similar method. So, I ordered and replaced all sensors related to cover door and still the same issue. I've replaced Sensors 4, 6, 7, 14, 18, and 20 from the electrical component picture attached above.

Another thing after I replaced the ADF board, the "P" jam disappear and when I lift the doc feeder up and put it down. It popped the "p" jam and I cannot reset it afterward. I don't know what I am missing here.

[Polarbear]

Re: MPC4000 DF JAM CODE 001

Kannuki

I would suggest entering service mode and selecting option 6 (peripherals) and then performing the input checks (for sensors) and output checks for (switches) to confirm that the logic system is working. Physically trigger each sensor and switch to see that it changes from 1 to 0 or visa versa.

Also have you checked that there are no punch debris in the paper path (some sensors need a black patch to be at neutral). The fact that it triggers when you close the cover tells me that it is seeing a sensor that is in a jam stats.

Only other thing I can think is that something is broken or out of place. Check all the "flags" (mechanical triggers) to make sure that they are seated correctly.

[slimslob]

Re: MPC4000 DF JAM CODE 001

Thanks for your help, slimslob. Several of my senior techs suggested similar method. So, I ordered and replaced all sensors related to cover door and still the same issue. I've replaced Sensors 4, 6, 7, 14, 18, and 20 from the electrical component picture attached above.

Another thing after I replaced the ADF board, the "P" jam disappear and when I lift the doc feeder up and put it down. It popped the "p" jam and I cannot reset it afterward. I don't know what I am missing here.

I don't see mention of the DF lifted off the glass. There are usually 2. One on the main frame for when a platen cover is used and one in the DF.

Kannuki

I would suggest entering service mode and selecting option 6 (peripherals) and then performing the input checks (for sensors) and output checks for (switches) to confirm that the logic system is working. Physically trigger each sensor and switch to see that it changes from 1 to 0 or visa versa.

Also have you checked that there are no punch debris in the paper path (some sensors need a black patch to be at neutral). The fact that it triggers when you close the cover tells me that it is seeing a sensor that is in a jam stats.

Only other thing I can think is that something is broken or out of place. Check all the "flags" (mechanical triggers) to make sure that they are seated correctly.

When looking for what is causing a jam, look for a sensor that is showing as covered. Also check the original jam history to see where the last actually jam occurred.

If all else fails, you may have to print the Non Defaults and network settings then do a memory clear. It is a drastic measure but I have had a couple of times where that was the only thing that would clear a jam code.