Installation guide

5-9
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 5 Replacing Parts on the IGX
Replacing an AC Power Supply
Installing an AC Power Supply in an IGX 8410 Node
To install a power supply, perform the following steps:
Step 1 Slide a replacement power supply into the power supply tray and push it to the back. When a supply
reaches the end of the slot in the tray, a slight resistance is encountered. Push the power supply slightly
farther in to seat the supply correctly.
Step 2 Install the power supply cover plate.
Step 3 Tighten the captive screws on the cover plate until finger-tight.
Step 4 Use the dsppwr command to check the status and output voltage of the replacement power supply. Make
sure that the status is OK and the output voltage is 50 V ±2 V.
Replacing an AC Power Supply in an IGX 8420 or IGX 8430 Node
When a power supply has failed, a red FAIL light on the SCM comes on. Before replacing a power
supply, check to see if it needs only to be reseated. The following steps describe how to reseat a supply
then how to replace it.
Step 1 To remove the air inlet grille, locate the small access hole at the top and center.
Step 2 Insert a flat-blade screwdriver in the access hole.
Step 3 Rotate the screwdriver to release the spring latch holding the air intake grille (see “Release” in
Figure 5-4).
Figure 5-4 Replacing an AC Power Supply
Step 4
Tilt the air inlet grille down to approximately a 45° angle, then lift if out and set it aside. This exposes
the power supply retainer bracket (a hinged door).
Step 5 With a flat-bladed screwdriver, unscrew the retainer screw in the center of the hinged door and tilt the
door down.
Step 6 Identify which power supply needs replacement. The power supply lettering begins with A on the far
left and continues through F on the far right.
H8340
Front flange
Optional midmount
brackets
Mounting bracket
(marked -00)
Release
Air intake
grille