Originally Posted by
tcs04
This may seem like a strange answer, but I had something similar not too long ago.....
Take a look at the movement of the receiving tray! Does it lower and raise in the correct sequence during boot up and when running jobs?
The tray lift motor (DC) can stick and will generally cause a problem only on staple jobs. The one I had was not a hard on fault, but would cause the machine to display frequent jams at R7 (?) and then staple error SC's.
I was able to make the motor work by simply touching the pulley at the correct time. The motor worked under test and was normally ok when feeding non-staple jobs. When stapling I could see the tray was not lowering / lifting as the sets ejected.
We were convinced this was a problem with the stapler and ripped everything apart, replaced the sensors etc, but nothing would fix the problem. Fitted a new motor and the fault was cured.
I suppose the main point is that on these finishers if you get problems related to staple jobs it may not be the staple head causing the problem!
Have you have checked the two long tension springs on the back face of the staple unit are in place? These can fall off causing the unit to move around and not engage the HP sensors.
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