Chapter 1 General Information
1-14 www.zoll.com 9650-001355-01 Rev. M
Ready For Use (RFU) Indicator
The X Series has an RFU indicator on the front panel that indicates if the device is ready for
use. The RFU indicator has three states which are described in the following table.
State Description Action
Ready for Use The device is ready for use. Patient
monitoring, defibrillation, and
pacing parameters are functional
and the battery is above the low
battery capacity.
Note: If the device is plugged into
the auxiliary power adapter, the
Ready for Use indicator may display
even if the battery is depleted.
Check the status of the battery
before removing the device from the
auxiliary power adapter.
None required.
Flashing One or more of the following has
occurred:
• The battery is not properly
installed.
• A low battery is installed.
• A battery fault has occurred.
• There is no battery installed
while connected to auxiliary
power.
• One or more patient monitoring
parameters have failed self-test
(NIBP, SpO
2
, CO
2
, IBP, or
Temp).
• The front panel button self-test
failed.
• The speech database self-test
failed.
Install a fully charged battery in the
unit and check the RFU indicator
again. If the RFU indicator
continues to flash, remove the unit
from service and contact the
appropriate technical personnel or
the ZOLL Technical Service
Department.
Do Not Use One or more of the following has
occurred:
• The battery is not properly
installed.
• No battery is installed and
auxiliary power is not present.
• A very low battery (below
software shutdown limit) was
installed.
• ECG, defibrillator, or pacer self-
tests have failed, or other critical
self-tests have failed.
Install a fully charged battery in the
unit and check the RFU indicator
again. If the RFU indicator
continues to display the Do Not
Use symbol, remove the unit from
service and contact the appropriate
technical personnel or the ZOLL
Technical Service Department.
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