Rotary Encoder (9.5-In. Gui) - Respironics ESPRIT Service Manual

Rotary Encoder
(9.5-in. GUI)
REF 580-1000-02 G
Intensity potentiometer
(connected to harness IC/POT)
Figure 9-29: Volume and Intensity Potentiometers (10.4-in. GUI)
Follow these steps to remove the rotary encoder (Figure 9-30). Reverse
removal steps to install.
NOTE: Reinstall the rotary encoder according to the orientation shown.
1. Remove the top enclosure (see "Top Enclosure" on page 9-4).
2. Remove the sensor PCB (see "Sensor PCB" on page 9-5).
3. Remove the power supply (see "Power Supply Fan/Shroud" on page 9-
7).
4. Disconnect the rotary encoder harness from the J10 connector on the
MMI PCB (see "MMI PCB (9.5-in. GUI)" on page 9-15).
5. Remove the GUI assembly (see "GUI Assembly (9.5-in. GUI)" on
page 9-19).
6. Pry the blue cover from the rotary encoder.
7. Loosen the 11-mm nut holding the knob, then remove the knob and
washer.
8. Remove the ½-in. nut and star washer holding the rotary encoder to
the front panel overlay, then remove the encoder.
Esprit® Ventilator Service Manual © Respironics, Inc.
Component Removal/Installation
Volume potentiometer
(connected to harness VC/POT)
Chapter 9
9-27