(8) The display time is limited by the timer (U36, Q18, and Q19) to
approximately eight seconds. After this period, the display turns off and the circuit is ready
to process another signal.
DAILY OPERATIONAL CHECKS
a. Perform a daily operational check to identify if a circuit is malfunctioning. Use
the daily check chart (figure 2-2) to ensure the readiness of your MRL Porta Pak 90 and its
optimum working condition. The inspections and tests on the chart should be performed
daily or at the end of each shift. In addition to the daily check, performance and calibration
must be verified by authorized personnel at regularly schedule intervals not to be longer
than one year.
b. Test each function on the daily check chart for both the monitor module and
Defibrillator Module. If you do not get the proper response and if the remedy provided
doesn't resolve the problem, proceed to performing the troubleshooting procedures
(paragraph 2-6) to isolate the cause of the malfunction.
Select the proper voltage for 110v or 220v.
1. Connect the MRL Porta Pak 90 to an
The green charge lamps will light on both
ac outlet via the defibrillator power cord.
2. Disconnect the defibrillator power cord
The green charge lamps will go out.
from the ac outlet.
3. Press the power switch on the monitor
The green power light will glow.
A baseline trace will appear on the scope.
The battery level indicator should be in the
green area. If the battery indicator falls
into the red area, the unit should be
charged for 10 hours before putting into
service. NiCad version requires 16 hours.
Figure 2-2. Daily check (continued).