Disconnect the heater wires from terminal strip TS6. Unthread the
Use a wrench to unscrew the heating element from the heat tube.
Reverse this procedure to install a heater.
i. Developer Sensor Problem. The resistance of the developer sensor is out
of tolerance. You determine the developer sensor is malfunctioning and that you must
remove it. Use the following procedures.
Disconnect the power and drain the developer tank to a level below the
(2) Disconnect the sensor leads. Unscrew the knurled collar on the sensor
and pull the sensor out.
When installing a new sensor:
(a) Make sure the O-ring and washer are in place between the tank
fitting and the knurled collar. Refer to figure 4-9.
(b) Tighten the collar until the sensor feels snug.
Check the fitting for leaks.
(d) Perform the "temperature calibration" described in Lesson 3.
Figure 4-9. Developer sensor assembly.