mp501 -- 6x9 manila envelopes jam code 37 "double feed detection"

**morgansterne** · 02-15-2018

These 6x9 inch envelopes were working previously -- the salesperson set the machine up and tested both these and standard size white envelopes.

Now it jams every time with these envelope -- goes a little way past the reg roller and just barely hits the fuser before coming to a stop. No crumpling of the lead edge at all and machine displays jam code 37. Paper size is set correctly at computer, type is set to envelopes, machine is programmed for "driver/command" so should be obeying the computer settings. I don't get why it's triggering the double feed detect sensors, and according to the service manual there's no way to turn the detection off like I used to do with the c6000 machines (SP 1-302).

The customer had work to do and asked me to come back another day (it's a very small office and not much room), so I'm not in front of the machine now.

I called Ricoh tech support and he does not know of a way to turn this off either.

Ricoh TSRC site Tech Forum does not even have a group for these models.

**slimslob** · 02-15-2018

Have you tried cleaning/replacing the bypass separation pad?

**morgansterne** · 02-19-2018

no, I haven't tried that -- the machine is nearly brand new, and it's not actually double feeding -- it's falsely triggering the sensor. We were testing it with loading only one envelope at a time into the bypass.
I've been poring over the service manual today trying to find the double feed sensor, but I haven't seen it listed anywhere yet.

The machine is at a government office which is closed today for the holiday. Tuesday I'll be back out there and I'll make sure to clean the sep pad and try again. I suppose I will do firmware as well.

**sturmtrooper** · 02-19-2018

Originally Posted by morgansterne

no, I haven't tried that -- the machine is nearly brand new, and it's not actually double feeding -- it's falsely triggering the sensor. We were testing it with loading only one envelope at a time into the bypass.
I've been poring over the service manual today trying to find the double feed sensor, but I haven't seen it listed anywhere yet.

The machine is at a government office which is closed today for the holiday. Tuesday I'll be back out there and I'll make sure to clean the sep pad and try again. I suppose I will do firmware as well.

I would try feeding an envelope out of the main tray along with trying to make a copy onto one of the envelopes. That would help rule out the bypass tray or driver issues.

**blackcat4866** · 02-20-2018

Just out of curiosity, have you tried selecting the standard C5 envelope? The size is very close: 6.38" x 9.02"
=^..^=

**morgansterne** · 02-20-2018

Ok, I got this working. All we had to do was choose a standard size envelope -- somehow a different size had been chosen I think. I measured the envelope and set the size but I think with the flap open the sensors thought it was stream feeding.

So this model doesn't have a double feed sensor measuring the paper thickness (which is why I couldn't find it in the service manual), it just thought it was stream feeding because of the flap.