BX900 S2
Upgrade and Maintenance Manual
95
Power supply
6.3
Replacing a power supply unit
6.3.1
Required tools
●
Preliminary and concluding steps: tool-less
●
Replacing the fan module: tool-less
6.3.2
Preliminary steps
Before replacing the power supply unit (PSU), perform the following steps:
Ê
Check the power supply redundancy configuration as described in section
"Verifying power consumption" on page 80
.
Ê
If applicable, open the rack door as described in section
"Opening the rack
door" on page 48
.
Ê
Locate the desired system unit as described in section
"Determining the
error class" on page 45
.
Ê
Locate the defective PSU as described in section
"Locating the defective
component" on page 48
.
Ê
Remove the AC power cord from the cable tie and disconnect it from the
system as described in section
"Disconnecting the power cords" on page 49
.
Customer Replaceable Units (CRU)
average hardware task duration: 5 minutes
average software task duration: 10 minutes