Mallinckrodt NELLCOR NPB-4000 Service Manual page 15

3.3.3 Power-On Self-Test
5. Set NIBP simulator to simulate pressure setting of 120/80 mmHg and heart
rate of 80 bpm.
6. Ensure monitor is not connected to AC power.
7. With NPB-4000/C turned off, press On/Standby switch and verify battery
icon appears at bottom of display after power-on self-test is completed.
Boxes in battery icon should all be filled, indicating battery is charged.
8. Verify monitor is responding to SpO
sounding. Use knob to select SpO
audible alarm.
9. Use knob to select NIBP Menu and set Automatic Measurement Interval to
15 minutes. Exit menu and press front panel NIBP Start/Stop switch to
manually initiate first NIBP measurement. Subsequent NIBP measurements
will be taken automatically every 15 minutes.
10. NPB-4000 monitor must operate for at least 4 hours before monitor
automatically powers down due to low battery condition. NPB-4000/C
monitor must operate for at least 3 hours before monitor automatically
powers down due to low battery condition.
11. Verify low battery alarm occurs 15-30 minutes before battery fully
discharges.
12. Allow monitor to operate until it automatically powers down due to low
battery condition. Verify audible alarm sounds when monitor automatically
shuts down. Press Alarm Silence switch to terminate this audible alarm.
13. If monitor passes this test, immediately recharge battery (paragraph 3.3.1,
steps 1–3).
1. Connect monitor to AC power source and verify BATTERY
CHARGING/AC SOURCE indicator is lit.
2. Do not connect any input cables to monitor.
3. Observe monitor front panel. With monitor off, press On/Standby switch.
Monitor must perform the following sequence.
a. Monitor emits three consecutively higher pitched beeps.
b. A few seconds later, display backlight illuminates, but display is blank.
c. Nellcor logo then appears for a few seconds, with version numbers of
boot and operational software displayed in lower left corner of
display.
Section 3: Performance Verification
simulator signal and audible alarm is
2
Menu and permanently silence SpO
2 2
3-3