H3C S7500E Series Installation Manual page 104

CAUTION:
Power module replacement involves removal and installation of power modules and power cables. Strictly
follow the procedures shown in
bodily injury.
Figure 48 Power module removal flow
Figure 49 Power module installation flow
WARNING!
An AC power module and a DC power module cannot be installed on the same S7500E switch, and
•
power modules with different models cannot be installed on the same S7500E switch. When you use
two power modules to supply power, and the power modules to be replaced are of different models,
power off the switch before replacement to avoid damage to the switch.
When you use two power modules to supply power to the switch, make sure each power module has a
•
separate circuit breaker. Before replacing a power module, turn off the circuit breaker on the power
module.
Follow these steps to replace a power module:
Prepare an antistatic mat to place the removed power module.
Step1
Wear an ESD-preventive wrist strap and make sure it has a good skin contact and is well grounded. For
Step2
more information, see the chapter "Installing modules."
Turn off the switch on the power module.
Step3
Remove the cable from the power module.
Step4
Use a Philips screwdriver to loosen the captive screw on the power module, as shown in callout 1 on
Step5
Figure 50.
Holding the power module handle with one hand and supporting the bottom of the power module with
Step6
the other, gently pull the power module out, as shown in callout 2 on
Put the removed power module on the antistatic mat.
Step7
Install a new power module. For the installation procedures, see the chapter "Installing modules."
Step8
Figure 48 and Figure 49
93
to replace a power module to avoid device or
Figure 50.