[Misc] MX 2300 head scratcher

[vincent64]

Got a strange one here...#1 feed sect has 3 sensors in it, 2 will change states in Sim mode, the 3rd will not its sensor CLUD1, which is the one I think that tells the cass lift motor to turn on and lift the cass, have swapped most every thing, lift motor, sensor and switch on back frame of machine, fun jobs there, and cass lift motor, tried a different feed sect, was from a MX 2600 but looks identical to the 2300 feed sect.
No bent pins in the connector where feed sect plugs into.
Going to start digging through wiring diagrams see where it goes, not easy to trace in the machine....any ideas

[Dark Helmet]

Find CLUD1 in the service manual and check on the PCU board to see if the sensor changes states. If the sensor changes states when you measure at the PCU but you don't see any change when your in test command 30-2 the PCU is probably at fault.

In my book page 302, it shows CN6 on the PCU. Pin 3 is CLUD1
It looks like this thing is connected to a few differnt connectors/boards before it finally hits the PCU. Measure at the PCU and activate the sensor and see if the voltage changes.

The driver board provides power for the sensor but the signal goes to the PCU. If the signal does not change states check for the 5 volts leaving the driver board.

[OMD-227]

You are right. CLUD1 is the sensor that is activated by the large white spring-loaded plate, which tells the machine the tray is installed, and to then start the lift motor. You will find that when you push the tray in, it will display the correct paper size on the op panel, but refuse to lift the tray. From memory, it also states that the tray is ready to open. The correct size of the paper is detected by the size detect switches in the black box area on the rear frame.
I have had this a few times now, on a range of MX machines.
Each time it has been caused by a faulty CLUD1 sensor. A new sensor fixed the issue straight away.
Have you actually change the CLUD1 sensor? From your post Vincent, it only sounds like you've changed the whole PF unit. The PF unit between the Pastel1 & Pastel2 are different, even though they look the same. Many of the sensors are a completely different part number. The pastel1 CLUD1 sensor is VHPGP1A71L3-18, the Pastel2 CLUD1 sensor is VHPGP1A73A+-18.
As with all of my issues with this exact symptom, change the CLUD1 sensor (take the PF unit out, remove top cover & access sensor from there) & then test that.
It would be rare for the PCU board to be bad, causing just this particular problem, but Lawrence is right with his diagnostic procedure as usual.
propeller.gif Lawrence

[OMD-227]

How did you go with this one Vincent?? Was it the CLUD1 sensor??

I had another one of these on Friday, and remembered this post. Was curious how you went.