Table of Contents
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Chapter 9
Component Removal/Installation
Backlight Inverter
PCB (9.5-in. GUI)
Backlight Inverter
PCB (Original 10.4-
in. GUI only)
9-8
WARNING:
The backlight inverter PCB generates high voltage. To avoid personal injury,
verify that the AC and external DC power sources are disconnected from the
ventilator.
Follow these three steps to remove the backlight inverter PCB (see Figure 9-10
for 9.5-in. GUI ventilators). Reverse removal steps to install.
1. Remove the top enclosure (see "Top Enclosure" on page 9-4).
2. Disconnect the cables from CN1 and CN2 on the backlight inverter
PCB.
3. Remove the two screws that hold the PCB to the power supply shroud,
then remove the backlight inverter PCB.
Power supply shroud
Figure 9-10: Backlight Inverter PCB Connections (9.5-in. GUI)
WARNING:
The backlight inverter PCB generates high voltage. To avoid personal injury,
verify that the AC and external DC power sources are disconnected from the
ventilator.
Follow these steps to remove the backlight inverter PCB (Figure 9-11, Figure
9-12) for 10.4-in. GUI ventilators. Reverse removal steps to install.
1. Remove the two 2.5-mm screws from the bottom corners of the GUI.
Esprit® Ventilator Service Manual © Respironics, Inc.
CN2
Backlight inverter PCB
CN1
REF 580-1000-02 G
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Table of Contents
Troubleshooting
