Ricoh aficio cl7100 the error light comes on saying close duplex unit cover it is closed thanks Bill.

The relay door is the door on the lower right side, below the duplex unit. Check this door -- it may not be closed all the way, or the actuator (the piece of plastic that sticks off the door and is the part that blocks the sensor) may be broken. If neither of these is the case, the sensor may be bad.

there is a sw on the duplex unit that tells the copier it is closed my guess is that its broke

Hot section problems Replace the fusing unit Its a kit make sure to put a new oil unit DO NOT USE THE OLD ONE, (sorry I yelled but new fuser failure sucks) -Carl

it is possible that the duplex door switch or actuator is bent or out of position and not making good contact the switch on that model is a small plastic switch and it may need to be replaced if that is the case you may need to call a ricoh service tech to replace the switch.
the switch is inexpensive a few dollars but the cost of the csr could be $113.00 per hr or more.

good luck!

you need check:
1) there are two fuses in the fuser unit, big possible one of them broken. change fuse if you can, should be fixed.
2) if check (use meter) all fuse good, so the heat lamp damaged,
you may change it also can fix it,
fuser unit maybe expansive.
hope hep you fix it, please feedback any question any time, pleaae take a rating let me know how much helped you thanks!

Hi There,

The vertical box on the left side of the machine is not closed all the way. Open it, and close it again. It is directly on the left side of the main machine.

Scott K.

hello, you problem is a color(cmy) pcu motor lock, the motor is damage or exist a mechanical problem whit the pcu's

Reseat the cyan PCU .

THe oil unit is not entered correctly

I post a solution for this problem see: www.fixya.com/support/t2748127-false_door_open_reading_aficio_350