Sensors And Switches; Paper-Pass Sensor 1 And Paper-Empty Sensor; Paper Clamp Sensor 2; Thermal Head Position Sensors - Tektronix Phaser 440 Service Manual

Sensors and switches

Paper-pass sensor 1 and paper-empty sensor

Paper clamp sensor 2

Thermal head position sensors

Transfer roll mark sensors

The following topics explain how to remove sensors or switches that are difficult
to reach, require considerable print engine disassembly, or require special
cautions.
These sensors are located on the paper-feed module. The paper pass sensor 1
and the paper empty sensor are soldered on the paper-feed circuit board. The
board must be replaced to replace the sensors. Refer to the earlier topic
"Paper-feed module" on page 8-6.
This sensor is mounted on the bail roller assembly. To remove the sensor,
remove the bail roller assembly as explained in the earlier procedure "Bail roller
assembly" on page 8-17.
These sensors are mounted on a small circuit board that attaches to the top-side
of the top cover. It is easily accessible by removing the top cover panel.
The transfer roll mark sensor circuit board is mounted on the bail roller
assembly. To access and remove the sensor board, remove the assembly as
explained in the previous procedure "Bail roller assembly" on page 8-17. Upon
reassembly run the calibration procedure "Calibrating the reflective sensors" on
page 9-15 to ensure that they are in proper adjustment.
FRU Disassembly/Assembly
Service Manual
8
8-31