4.Troubleshooting for Peripheral Units
837
behind the bracket, and then tighten the screws.
ï‚· A spacer is 2 mm thick. If the adjustment requires more than 2 mm, use another spacer.
5. Dock the stacker to the upstream unit, and then do some more test prints, and if the amount of
skew is still beyond the first notch, do the procedure again and insert another spacer if required.
6. If no further adjustment is required, re-attach the right front cover of the stacker, and then connect
the stacker to the upstream unit.
Premature Shift Tray Full Detection
Cause:
When paper that is about as wide as the paper height sensor feeler is discharged to the shift tray, if it
has side face curl, the edge of the paper may fail to go under the paper height sensor feeler and ride up
on the feeler. Alternatively, by coming in contact with the paper height sensor feeler, it may ride up and
press against the feeler and the load from this may hinder the movement of the feeler. In this case,
even if the shift tray moves down, the paper height sensor feeler fails to turn the sensor OFF, and the
lowering time of the shift tray ends up exceeding 650 ms, and the unit ends up sensing it is full.
This is likely to occur if paper of a certain width is output to the shift tray, the unit may detect being full
prematurely. (Paper between roughly 191 mm to 261 mm wide)
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