M160 Internet Router Hardware Guide
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wris t and
connect the strap toone of the ESD points on the chassis. Make sure the router
is attached to a proper earth ground. For more information about ESD, see
“Preventing ElectrostaticDischarge Damage” on page 226.
2. Grasp the sides of the fan tray and align the rear of the tray with the guides
inside the chassis.
3. Slidethefantrayallthewayintothechassis.
4. Tighten the thumbscrewat each end of the cable management system.
5. Rearrange the PIC cables in the cable managementsystem. For more
information about proper cable arrange ment, see “Maintaining PICs and
PIC Cables” on page 134.
Figure 70: Installing the Fan Tray
1937
Replacing the Front Impeller Assembly
The front impeller assembly, which includes the craft interface, is located at the
front of the chassisabove the FPC card cage, as shownin Figure 1. The assembly
weighs approximately 14.5 lb (6.6 kg). The assembly i s hot-removable and
hot-insertable,as described in Field-Replaceable Units (FRUs) on page 4.
The craft interface is attached to the front of the front impeller assembly. If you are
removing the front impeller assembly to replace it and the replacement assembly
does not have a craftinterface already installed on it, you musttransfer the craft
interface from the removed assembly to the replacement ass embly. Perform the
procedures described in thefollowing sections:
Removing the FrontImpeller Assembly on page 151
Removing the CraftInterface from the Front Impeller Assembly on page 152
150 Replacing Cooling System Components