Respironics Tranquility Quest Plus - Chapter 6: Troubleshooting; Troubleshooting Table

Chapter 6: Troubleshooting
Tranquility Quest Plus CPAP System Service Manual
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6.1 Troubleshooting Table
Symptom Cause Verification Corrective Action
Indicator -
LED or other indicator not
working.
LED / Main PCA
Visual
Replace Main PCA
Replace in order until
solved:
• Display PCA
• Main PCA
 Ribbon Cable
Intermittent Power Supply
Problem -
An intermittent on / off
condition exists, unit operates
randomly, or indicator
lights blink sporadically.
• Power cord, AC inlet,
Main PCA, loose
connections.
• Power Supply PCA.
Inspect power cord. Inspect
all connectors on
the PCAs.
• Power Cord
• Power Supply PCA
Display -
Display is blank or contains
erroneous information. Unit
delivers therapy pressure.
• Display assembly
• Main PCA
Inspect the cable between
the display and the main
control board for loose
connection.