User Manual Part 1

6 Draft: 8/13 PTM 1000 Operations and Maintenance Manual
Warning Hazardous energy exists within the Hub IDU. Use extreme
caution when performing troubleshooting or disassembly.
Always be careful to avoid electric shock or equipment damage.
Warning Do not wear items that could get caught in the chassis or module
slots, such as a tie, jewelry (including rings and chains) or
loose clothing.
Warning Metal components heat up when connected to power and
ground, and can cause serious burns.
Warning Read the installation instructions before connecting the system
to its power source.
Warning Before working on a chassis, unplug the power cord on AC
units, or disconnect the power at the circuit breaker on DC units.
Turn all power supplies off (O) and unplug all power cables
before opening the chassis.
Warning Do not touch the power supply when the power cord is
connected, as line voltages are present even when the power
switch is off.
Warning If the power is on, do not touch any wires, bus bars or electric
connections within the chassis with your hands or fingers. Do
not insert metal objects, such as screwdrivers, into the
backplane.
Warning Before beginning any procedures requiring access to the
chassis interior, locate the emergency power-off switch for the
room in which you are working.
Warning Disconnect all power and external cables before installing or
removing a chassis.