Ricoh MP C4500 ADF Jamming

[iscott]

Ran an error code report and for the Original Jam Det it said
at power on 9
Seperation:On 45
Reading Entrance 25
Registration On 2
Reading Exit Sens 15
Paper Exit: On 0
Seperation: Off 100
Registration Off 1
all others 0
This machine has 260K on it but they scan a ton too.

[teebee1234]

Probably the 2 most likely causes will be the feed clutch or the sensor pits. The pits collect dust and eventually the sensor can't get a proper reading. Make sure you clean them out.

[jonhiker]

Agree with teebee. When was the last time the feed belt, pick up roller and sep roller were changed? that is always a good place to start

[luig]

You may take a look at the "skew correction roller" it gives the same symptoms like a bad clutch. What I've seen on other copier ADF's is that the rubber separates from the shaft, this is more likely when the customer uses the doc feeder a lot.
I hope this helps.

[nallard84]

generally I would clean the belt and paper pickup roller if there is tread left and replace the auto reverse roller, if that doesn't work the pits for the sensors is def a good place too look I also have had to replace the photoreflective sensors in the adf cover that detect the paper

[Cipher]

Seperation:On 45
Seperation: Off 100

Check out the gear collar on the ADF bracket that slides across when drive is provided.
If the collar is dirty or has been oiled by another tech it can cause it to intermittently stick and not freely shift across.
Also don't forget to clean the sensor underneath the document feeder (2x screws to remove the sensor cover).