Performing the Post-installation Check
12.2
Equipment Inspection Before Power-On
CAUTION
Switch off the power sources for the equipment. Use a multimeter to measure the resistance between
NEG(-), RTN(+), and PGND terminals on the equipment.
Voltage Range
–48 V DC Power Source
–60 V DC Power Source
-40 V to
–57.6 V
-48 V to
–72 V
76
Provisioning Power for the Equipment
a
After measuring the power voltages, shut down all power inputs to the PSU boards.
CAUTION
Do not power on the equipment when the power voltages are not within the specified ranges.
CAUTION
Measure the voltage between the NEG(-) and RTN(+) terminals on each PSU board.
Inspecting the Equipment Before Power-On
b
Do not insert or remove power plugs and PSU boards when they are energized.
WARNING
Switch on the main power for the subrack and check whether the subrack is powered on. If
the subrack is powered on, switch the main power off and then switch on the backup power
for the subrack. If the subrack is powered on, switch on the main power again.
Check the power indicator (green) at the top of the cabinet. The indicator should be lit.
After the subrack is powered on, test the air flows to check that the fans are working.
Check that the indicator on the fan tray assembly is steady green. If the STAT indicator is not
steady green (for example, steady yellow indicates one of the fans has failed, steady red
indicates two or more fans have failed), rectify the fan faults and then commission the
equipment.
