91369 Service Manual
4-5
Maintenance
Functional Tests
Monitor Self-Test
A power-ON self-test is performed each time the monitor is turned ON.
• The power ON/OFF switch (refer to
on page 2-2) illuminates indi5 V is present.
• If the monitor is operating on external AC power, the power LED on the front bezel also illuminates.
• If the monitor is operating on AC power and batteries are being charged, the battery A and battery B status
LEDs on the front bezel flash ON and OFF at a constant rate. Once the batteries are fully charged, these
LEDs remain ON. If no battery is present, one or both of the battery status LEDs will remain OFF.
Monitor Functional Tests
This procedure verifies operation of the recorder assembly, network connectivity, alarm relay output, and
external SDLC connections. It assumes that a 91496 multiparameter module (ECG, RESP, two PRESS
channels, and two TEMP channels) is available for testing purposes. In the event that these parameters are
not available, similar modules may be substituted.
Verifying Monitor Functions
Note:
To begin the test, make sure no modules are inserted and no Flexports or other SDLC devices are
connected.
1 Plug in the monitor and verify that the front bezel power LED is lit. If one or two batteries are installed, verify
that the appropriate battery LED(s) are ON solid or flashing.
2 Press the power ON/OFF switch to power ON the monitor and verify the following sequence of events:
a
The power ON/OFF switch illuminates.
b
The embedded alarm light LEDs illuminate briefly. Verify that all LEDs are functional.
c
The
Diagnostic
menu displays. (If errors are noted during power ON, contact your Spacelabs
Healthcare Field Service Engineer.)
d
If batteries are installed, the fan begins operating within 60 seconds after turning ON the monitor. The
fan will then turn OFF unless the internal temperature requires additional cooling by the fan.
e
Monitor keys display along the right side of the screen.
3 Insert the ECG module without a patient cable connected. Verify that the ECG parameter key appears on
the screen with
???
and the message LEADS OFF.
4 Connect a patient simulator to the ECG input with a patient cable. Set the simulator to a known rate and
verify that the ECG count and the lead being monitored are displayed to the right of the ECG parameter key.
Also verify that the ECG waveform appears on the screen.
5 Connect a patient simulator to the invasive pressure inputs.
6 Zero the pressures and verify that the numerics and waveforms are accurate.
