Nortel Networks Passport 241-5101-200 - Manual (Page 46)

46 Appendix A Replacing hardware
241-5101-200 R2.2
Replacing a power supply module
The Passport 8250 device is powered by two power supply modules. If a
power supply module stops operating, you need to immediately replace it
with a dummy power supply filler pack to ensure proper cooling and air flow.
You also need to contact your Nortel Networks representative to order a new
power supply module.
1 For each power supply module, set the power supply breaker to off.
2 Disconnect the power feed at the power distribution source.
3 Using a screwdriver, loosen the four securing screws on the sides the
power supply module.
WARNING
Removing a power supply module
Turn the power off and let the unit cool before removing a
power supply module.
Breaker is off