GE Medical Systems marquette Dash 2000, Service Manual, Page: 95 / 202

TROUBLESHOOTING: Data Acquisition Tests
Revision A DASH 2000 Patient Monitor 4-13
2000 412-001
Noninvasive Blood
Pressure Functions Perform the noninvasive blood pressure (NBP) Checkout Procedure
found in Chapter 3, ÒMaintenanceÓ. This procedure determines whether
or not the NBP functions of the monitor are working as designed or
whether the monitor requires NBP calibration.
If, after performing the prescribed checkout procedure, it is determined
that there are potential problems that NBP calibration does not cure, try
the following:
1. If calibration is unsuccessful and cannot be properly performed,
there could be leaks in the pneumatic circuit plumbing. The following
steps will assist you in determining this:
¥ The NBP cuff and tubing is the easiest area to inspect for leaks
and is also the most likely area for failure in this regard. Closely
inspect these items for cracks or leaks. Test the NBP cuff and
tubing on a working monitor to determine the source of the
problem.
¥ If the NBP cuff and tubing are determined to be good after
testing them on a working monitor, the leaks are probably
internal to the monitor. Disassemble the monitor and check
inspect all internal tubing and connections in the pneumatic
circuit plumbing.
2. If no leaks are found after performing the previous step, the NBP
pump assembly is suspect. Swap the NBP pump assembly with one
from a working monitor and/or replace as necessary.
NBP Alarms Occur
Continuously
Cannot get NBP readings
from a patient in under
3 minutes
NBP displayed readings
are inaccurate
If the monitor is not configured properly, a variety of NBP problems may
occur. To determine monitor configuration, rotate then push the Trim
Knob to:
¥ Scroll to and select MONITOR SETUP from the main menu of the
monitor,
¥ Scroll to and select SERVICE MODE from the monitor setup menu
and enter the two-digit numeric day and month shown in the upper-
left corner of the monitor display.
¥ Scroll to and select MONITOR/ADMIT TYPE from the service mode
menu of the monitor.
Verify the configured monitor type matches the environment in which
the monitor is being used. If it is set to a neonatal ICU when the monitor
is used for the adult ICU application or vice versa, problems listed to the
left may occur.