AP Base Belt Tracking

The AP base has a unique belt path due to the bleed channel that sits under the printhead.

This can make setting the belt tracking adjustments difficult.

There are four adjustment screws that can be used to track the belt - two on the exit of the machine and two on the entry side of the machine. The screws can be adjusted using a 4mm hex wrench or bit.

Below are the names of each of the adjustment screws:

Entry - 1 (operator side on entry of conveyor)
Entry - 2 (non-operator side on entry of conveyor)
Exit - 1 (non-operator side on exit of conveyor)
Exit - 2 (operator side on exit of conveyor)

NOTE - To access the two adjustment screws on the entry side of the machine, the feeder must be removed.

The entry side adjustments tend to have more of an effect on belt tracking so it is suggested to start adjusting the tracking at the feeder side of the conveyor. The feeder side idler roller adjustment is opposite of traditional idler adjustment settings.

To move the belt closer to an adjustment screw on the entry side of the machine, tighten the adjustment screw. To move the belt away from the adjustment screw, loosen the adjustment screw.

To move the belt closer to the operator side:
Tighten Entry 1 (clockwise)
or
Loosen Entry 2 (anti-clockwise)

To move the belt away from the operator side:
Tighten Entry 2 (clockwise)
or
Loosen Entry 1 (anti-clockwise)

The adjustments to belt tracking are very very sensitive. It is recommended to adjust only in increments of 1/4 turn at a time once the belt is tracking toward the center.

The exit side idler adjustments work in a more traditional fashion. To move the belt closer to an adjustment screw on the exit side of the machine, loosen the adjustment screw. To move the belt away from the adjustment screw, tighten the adjustment screw.

To move the belt closer to the operator side:
Exit - 1 (clockwise)
or
Loosen Exit - 2 (anti-clockwise)

To move the belt away from the operator side:
Tighten Exit - 2 (clockwise)
or
Loosen Exit - 1 (anti-clockwise)

Once belt tracking is achieved, it is recommended to mark the adjustment screws so the position can be recorded - this can help determine if the adjustment screws come out of adjustment:

The adjustment brackets can also be locked into place with 2 x M3 screws (T10 Torx). However, this adjustment does require moving the front and back covers of the machine :