B
I
PAP S
YNCHRONY
S
ERVICE
& T
ECHNICAL
I
NFORMATION
1032443, R
EV
. 00
T
ROUBLESHOOTING
& D
IAGNOSTICS
- P
AGE
10
T
ROUBLESHOOTING
T
ABLE
Symptom
Cause
Verification
Corrective Action
Display
Indicator-
LED or other
indicator not
working
Main printed circuit
assembly (Main PCA).
Perform BiPAP
Synchrony Performance
Verification (8.5)
If device fails user
interface checkout
procedure, replace
Main PCA
Display-
Display is blank
or contains
erroneous
information.
Display Assembly
Main PCA
Inspect solder joints
between display and
Main PCA.
Replace Main PCA.
Intermittent
Power Supply
Problem-
An intermittent
on/off condition
exists, unit
alarms
randomly, or
indicator lights
blink
sporadically.
Power cord, Power Supply,
AC inlet, Main PCA, loose
connections.
Inspect power cord and
power supply for fraying
at cable ends.
Inspect all connections
on the Main PCA.
Replace Power Supply
Replace Main PCA.
Noise-
Missing or damaged rubber
feet on bottom of device,
blower malfunctioning.
Blower impeller imbalance.
Turn over and inspect
the bottom for missing or
damaged rubber feet.
Place hand on device, if
vibration is detected,
then replace blower S/A.
If rubber feet are
missing replace rubber
feet. Tighten any
loose screws.
Resolve any air leaks.
Replace Blower
