Troubleshooting
Revised October 2004
3800 Vital Signs Monitor Service Manual
6-5
Probable Cause(s):
1.
Overpressure test failed at startup.
2.
Internal communication problem between the master processor and NBP hardware
controller.
3.
Cuff pressure transducer problem.
4.
Pressure not releasing from cuff for more than 2 1/2 minutes.
5.
Pump not responding.
6.
Internal pneumatic tubing has a leak or has become disconnected.
7.
Internal software logic error.
Troubleshooting Action(s):
1.
Power-cycle the monitor. If the “NBP Needs Service” message occurs during the
startup tests (i.e., during the first 60 seconds), then contact InvivoMDE Technical
Service for instructions.
2.
If the “NBP Needs Service” and “NBP Zeroing” messages are no longer displayed
after powerup, then the startup tests have passed. Continue on.
3.
If the “NBP Needs Service” message occurs when an NBP measurement is started,
then listen when the NBP Start/Stop key is pressed. If the valves can be heard to
close (a “clicking” sound) but the pump doesn’t start running, then the pump may
be bad or the control line to the pump has a break. Contact InvivoMDE Technical
Service for instructions.
4.
If the pump does start running but shuts off after 2 seconds (followed by the “NBP
Needs Service” message), then the internal pneumatics tubing may be
disconnected. Follow the monitor disassembly procedure to gain access to the
master processor (bitsy board). Thewhite pneumatic tubing should connect to two
valves, the pump (on the lower of the two ports), the two black transducers on the
main board below the master processor, and the external NBP fitting. Check these
fittings and reassemble the monitor according to the monitor reassembly
procedure.
5.
If the problem persists, then one of the transducers may be faulty. Contact
InvivoMDE Technical Service for instructions.
6.3
Non-Physiological Monitoring Malfunctions
6.3.1 Optional Recorder Not Working
Description:
Paper will not feed out of the recorder.
Possible Cause(s):
1.
Paper is bound up in the recorder assembly.
2.
Recorder is out of paper.
3.
No power to the recorder.
Troubleshooting Action(s):
1.
Check M8 Alarm Message for possible recorder message.
2.
Open recorder door and check to see if paper is jammed.
3.
Open recorder door and check to see if paper is loaded into the recorder.
(If recorder needs to be replaced, refer back to monitor disassembly instructions.)
