Service manual

5
Removing and Replacing FRUs
5-3
Removal and Replacement Procedures (RRPs)
Removing and Replacing FRUs
This section describes procedures to remove and replace director
FRUs, along with a list of tools required to perform each procedure.
In addition, the section provides:
• ESD information
• A list of concurrent FRUs. Concurrent FRUs can be removed and
replaced while the director is powered on and operational.
• A list of nonconcurrent FRUs. Nonconcurrent FRUs can only be
removed and replaced after the director is powered off.
See Chapter 6, Illustrated Parts Breakdown for FRU locations and part
numbers.
ESD Information
Follow all ESD procedures, DANGER statements, and CAUTION
statements.WhenremovingandreplacingFRUs,alwaysconnecta
grounding cable to the director chassis and wear an ESD wrist strap.
ATTENTION! To avoidcausing machine errorsor damagewhileworkingon
the director, follow ESD procedures by connecting a grounding cable to the
director chassis and wearingan ESD wrist strap.
The ESD grounding points for the front of the chassis are located at
the right and left sides of the chassis (Figure 5-1). Touch the chassis
once before performing any maintenance action, and once each
minute while removing or replacing FRUs.
If the director is not connected to facility power (and therefore not
grounded), connect the ESD wrist strap to an approved bench
grounding point instead of the chassis.
The ESD grounding point for the rear of the chassis is located next to
the maintenance port (Figure 5-1).Touch the chassis once before
performing any maintenance action, and once each minute while
removing or replacing FRUs.