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Motorola XR900 Series User Manual: Recommended Power-off Procedure; Emergency Power Removal

Mass storage subsystem.
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Recommended Power-Off Procedure

As described in the previous section, the XR900 has no power
switch. The power supply cycles on and off under the control of the
host computer. Powering down the Modular Chassis also powers
down the XR900 chassis.
1. Insert the key and turn the Modular Chassis power switch to
status LED on the power supply remains on, indicating that
primary power is still present.
2. If the system incorporates a dual 9-slot chassis, repeat step 1
for System B.
3. If the chassis is to be powered down for a long time or will be
left unattended, remove the key to prevent tampering with
the power switch.

Emergency Power Removal

In the event of an emergency, pull the AC or DC power cable from
the rear of the enclosure. There are no user-accessible circuit
breakers on the chassis.
Ensure that proper software shutdown procedures
have been followed before you continue.
(off). The power supply cycles down, but the power
Operating Procedures


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