Power supply slots
2
Power supply modules
1
Captive screws
4
LED panel
3
Alignment tabs
5
Step 4
After the module is properly inserted, tighten the module plate to the router with the two captive screws. The screws
should be torqued to 10 to 12 in-lbs.
Installing the DC Power Supply in the Router
To remove and install a DC-powered power supply module, follow these steps:
Step 1
Turn off power at the DC circuits. To ensure that power is removed from the DC circuits, locate the circuit breakers for
the DC circuits, switch the circuit breakers to the OFF position, and tape the circuit-breaker switches in the OFF position.
Step 2
Use a number-2 Phillips screwdriver to remove the plastic safety cover from the power supply terminal blocks.
Step 3
Use a number-1 Phillips screwdriver to remove the DC-input power wires from the power terminals.
Use a Phillips screwdriver to loosen the two captive screws at the lower edge that secure the power supply module to the
router chassis.
Step 4
Remove the power supply module from the power slot by pulling on the extraction handle.
Step 5
Insert the new power supply into the power supply slot, and gently apply pressure while pushing the module into the slot
(see the following figure). When correctly inserted, the power supply is flush with the router rear panel.
Step 6
Use a ratcheting torque screwdriver to torque each screw to 8–10 in-lb (4-6.5 in-lb for 250 W PSU).
Wiring the Power Source
Before you wire the power source, review these warnings:
Cisco Catalyst IR8340 Rugged Series Router Hardware Installation Guide
39
Power Supply Installation
Installing the DC Power Supply in the Router