60
UUT Problem
Possible Causes
Further Checks
After UUT power up
sequence is complete
UUT Alarm Sounds with
the following error
message displayed on
LCD.
System Error, P105
or
System Error, P110
or
System Error, P115
SpO
2
Module fault.
Isolated Power Supply Module
failure on Main Board.
Main Board Processor SpO
2
RS232 comms failure.
Swap SpO
2
module and power
up UUT.
Check +5VI (+/-0.25V), -15VI &
+15VI (+/-1V) isolated supplies
are in specification.
Swap Main Board and power up
UUT.
When the pump starts
an NIBP Overpressure
warning is displayed on
LCD (even without cuff
attached to unit) .
Blocked or kinked hose from
pump output to front panel.
Pneumatic Assembly fault.
Examine hose for kinks or
blockage.
Check Pneumatic Assembly for
blocked output. Swap or test
Pneumatic Assembly.
When the pump starts
an NIBP Overpressure
warning displayed on
LCD when a cuff is
attached.
Kinked hose to cuff or faulty cuff.
Blocked or kinked hose from
Front panel to Main Board
pressure sensor ML1.
Main Board fault.
Test unit with known good cuff.
Examine hose for kinks or
blockage.
Swap or test Main Board
(ML1, IC5 or IC7 may be
defective).
When an NIBP
determination is started
pump is laboring
i.e. pump sound is lower
in frequency than
normal.
Fault may be
accompanied with either
of the following warning
messages:-
‘N33-NIBP Inflation
Timeout’
or
‘N00-NIBP
Overpressure’
Kinked hose to cuff or faulty cuff.
Blocked or kinked hose from
pump output to front panel.
Pneumatic Assembly fault.
Test unit with known good cuff.
Examine hose for kinks or
blockage.
Check Pneumatic Assembly for
blocked output. Swap or test
Pneumatic Assembly.