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Symptom
1F77 Jam at installation: Due to the Jumper on the Punch Controller was moved to the wrong
position (Professional Punch-C1)
[Case in the field ]
Description
A 1F77 jam is occurring in the Professional Punch-C1. The paper would jam in random areas of the punch
path. The machine was being setup as a new installation.
A 1F77 jam is defined as Puncher Unit "Time Out" jam.
Field Remedy
It was found that the Jumper on the Punch Controller was moved to the wrong position at setup. When the
Jumper is installed in the correct position, the pin at the extreme right of the connector is exposed. In this
case, the pin was exposed on the extreme left. When the Jumper was moved to the correct position, the
Puncher no longer jammed.