2 Safety and Care
2 - 26 Instructions for Use
Caring for Documentation and Storage Devices
For information on the care of an optional documentation or storage device, refer to the
manufacturer's operating instructions that accompanied the device.
Caring for the Battery Pack
Recharging the Battery Pack
See also: Hazardous Substances, p. 2-51
The battery pack is designed to maintain system memory for a minimum of four hours.
1.8 hours 2 hours
Battery Pack Replacement
Replace the battery pack when it is no longer able to hold a charge.
 When the system is disconnected frequently from the AC power (for a duration of greater
than four to eight hours), replace the battery every 12 to 18 months.
 When the system is only occasionally disconnected from the AC power (for a duration of
approximately four hours), replace the battery every three years.
1 Battery pack charge
indicator LED
2 AC OK indicator LED
3 Mains ON-OFF circuit
breaker
Example of an AC Tray panel with the battery pack charge indicator LED.
The battery pack charge indicator LED is located at the rear of the system, on the AC Tray
panel. A green blinking LED indicates that the battery is actively charging. A solid green LED
indicates that the battery pack is fully charged. If the LED is not illuminated, then there is a
problem with the battery pack, or the battery pack may be missing.
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