Installation guide

5-12
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 5 Replacing Parts on the IGX
Replacing a Fan Assembly in IGX 8420 or IGX 8430 Nodes
Figure 5-6 Fan Tray Assembly
Step 7
Push a finger or thumb through the square holes in the chassis to start the fan tray toward the front of
the system. Go to the front of the system.
Step 8 Remove the cooling unit and slide in the replacement unit.
Step 9 Plug the power connectors into the fan tray.
Step 10 Make sure that all fans are operating.
Step 11 Secure the fan tray assembly by tightening the captive screws.
Step 12 Attach the clamp for the fan power cord to the chassis.
Step 13 After fan tray replacement, install the air intake grille.
Replacing a Fan Assembly in IGX 8420 or IGX 8430 Nodes
An IGX node contains either one or two cooling units. In an IGX 8420 node, the single cooling unit
resides immediately below the card cage. In an IGX 8430 node, one unit resides below the lower card
cage (Fan Tray 1). The booster unit (Fan Tray 2) resides above the upper card cage. If a fan failure
occurs, the whole assembly must be replaced.
Fan trays are hot-swappable. However, the swap must go swiftly to keep the system cool. Replacement
must take less than two minutes, and this is relatively easy. Otherwise, system power must be off. In an
IGX 8430 node, the fan tray that remains while the other tray is out helps keep the system cool. Have
the replacement fan tray and tools nearby to help the swap go quickly. The required tools are a flat-blade
screwdriver and Phillips screwdriver.
H8394
Fan power connection
(below, not visible)
5A fast blow
fuse (8 total)