Paper Feed Troubleshooting
SM 4-39 D017/D018/D019/D020
Trouble-
shooting
4.3 PAPER FEED TROUBLESHOOTING
The machine is designed to automatically adjust the bottom plate pressure of each paper
feed station in the main machine and paper tray unit for the paper size and amount of paper
remaining in the tray. If the machine is frequently double-feeding or failing to feed with a
particular paper size with a certain amount of paper remaining in the tray, this problem can
be corrected with SP code settings, SP1908 to 1911. These SP codes change the amount
of time the bottom plate motor runs forward or reverse to increase or decrease pressure on
the bottom of the stack.
 Double feeding occurs when the bottom plate is exerting too much pressure on the
paper remaining in the tray. To correct this, increase the length of time the motor runs
in reverse to lower the tray. This is a minus (-) value.
 Failure to feed occurs when the bottom plate is not exerting enough pressure on the
paper remaining in the tray. To correct this, increase the length of time the motor runs
forward to raise the tray. This is a positive setting.
Before doing any adjustments with these SP codes, confirm that the correct paper size has
been selected for each tray with SP codes 1912, 1913, 1914, 1915.
 For more details about how this feature operates, please refer to "Feed Pressure
Adjustment for Paper Size" in Detailed Section Descriptions – Paper Feed.
 For more details about how to do the adjustments, please refer to "SP1xxx: Feed" in
Service Tables.
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