MPC5503 Intermittent 067 Jams

**Jaffa** · 02-28-2018

I have been attending a MP C5503 which gives intermittent 067 Jams from all 4 Paper Trays, all paper sizes (A4, A3, A4R) when doing 2 sided copies and prints.
There is no pattern to this it can be the 4th page or the 56th page or the 88th page, it is totally random throughout any one run.
I have disconnected the ADF, Bridge Unit and finisher, it still jams.
Using parts from an adjacent machine, I have swapped the Exit unit, Fuser unit, Paper Transfer Unit and paper Transfer Roller, A Complete RHS Door Assembly, Fuser/Exit Motor and Duplex Motor. None of which solved the issue.
The Firmware is at the Newest Level.

The 067 ADF Tech Bulletin has been checked and followed (The spring was in the correct position).

Can anyone help?

**slimslob** · 03-01-2018

Is the jam number you gave correct? 067 is a trail edge jam for the LCT relay sensor. Trail edge either leaves the sensor too early or too late for the select paper length.

**BLADE** · 03-01-2018

duplex entrance

**Jaffa** · 03-01-2018

Originally Posted by BLADE

duplex entrance

New Duplex guide unit had been fitted recently and is fine.

**Elmo** · 03-01-2018

Check all the one way pulleys around the duplex motor
reticently had one cause duplex jams
the are 3 in that area the 1 the drives the manual feed was seized cleaned pulley and shaft added slight bit of oil
has not jammed since