3: Troubleshooting Ready For Use Indicator
30
Ready For Use Indicator
The Ready For Use (RFU) indicator, located in the right side of the device handle, reports the status of
critical functions of the device as determined by the Automated Tests and Op Check. These Automated
Tests run periodically while the device is turned off (but has a power source) and check the following
critical functions of the device:
• defibrillation and cardioversion
•pacing
• pads/paddles ECG
• 3-lead/5-lead ECG
•battery
The RFU indicator also reports failures in critical functions detected at run time and during an
Op Check and Service Mode tests. Always check the RFU indicator when troubleshooting the device.
Automated test failures of non-critical components (such as the NBP or printer) are not reflected in the
RFU indicator, but are reported through Technical Alarm messages when the device is turned on.
The RFU indicator displays the status of the device using the following definitions:
NOTE: The RFU indicator may briefly display a solid red “X” when initially turning on the device, switching
between clinical and non-clinical operating modes, and at the start of any Automated test.
Table 5 RFU Indicator Status
RFU Status Meaning Required Action
Blinking black
hourglass
Shock, pacing, and ECG
functions are ready for
use and sufficient battery
power is available.
None
Blinking red X
without a
periodic chirp
Low battery is being
charged. The device can
be used, but run time is
limited.
Make a replacement battery available.
If a replacement battery is not available, then
charge the battery for two hours.
Blinking red X
and a periodic
chirp
Low battery not charging
or no battery.
Charge the battery as soon as possible by
connecting HeartStart XL+ to AC power and/or
replace the battery with a charged battery.
If both the battery and AC power are present, then
troubleshoot the battery as described in “Battery
Testing and Troubleshooting” on page 47.
Solid red X and
a periodic chirp
A critical failure has been
detected that may
prevent the delivery of a
shock, pacing, or ECG
acquisition.
Turn the Therapy Knob to Monitor. A Technical
Alarm describing the failure is displayed. Begin
troubleshooting as described in “Troubleshooting
Process” on page 43.
Solid red X
without a
periodic chirp
No power, or device
failure (cannot power
on).
Insert a charged battery and connect to AC power.
If the red X without a chirp persists for more than
10 seconds, then refer to “Troubleshooting
Process” on page 43.
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