Drum Position Encoder Gap - Tektronix Phaser 360 Service Manual

Drum position encoder gap

This procedure ensures that the drum position sensor assembly's encoder wheel
rotates freely inside the gap of the drum position sensor without the encoder
wheel's disk touching the sensor. If the disk touches the sensor, it can abrade the
disk and result in erroneous drum position readings.
1. Ensure that the retaining spring is not in the drum position sensor
assembly's encoder wheel groove. This ensures that the encoder
wheel is not tensioned and slides easily onto the drum shaft.
2.
If not already mounted in place, secure the drum position sensor
assembly onto the drum shaft and secure it to the printer frame.
3. Through the access hole in the drum position sensor assembly,
position the encoder gap tool on the drum shaft.
4.
Reposition the drum position sensor assembly's encoder wheel on the
drum shaft until it butts firmly against the encoder gap tool.
5. Holding the gap tool in place, with a small, flat-blade screwdriver,
slide the encoder wheel's retaining spring into the encoder wheel's
groove.
Checks and Adjustments
Service Manual 9-13
9