5-246 Cisco 7000 Hardware Installation and Maintenance
Replacing Internal Components
Replacing the Arbiter Board
The arbiter board provides switching and traffic control assistance to the SP (or SSP). The board is
categorized as an FRU (as opposed to a spare), which means that it can only be replaced by a Cisco
certified technician. The arbiter board needs to be replaced only if it fails.
The arbiter board is mounted directly to the backplane above the power bus bar. (See Figure 5-30.)
A connector on the back of the arbiter board plugs into a backplane connector, and three Phillips
screws hold the board in place at the top and lower right corners of the board. (See Figure 5-34.)
Figure 5-34 Arbiter Board
Tools Required
You need the following tools to complete this procedure:
• Number 1 Phillips screwdriver to replace the arbiter board in most chassis
• 3/16-inch flat-blade screwdriver to remove the top front chassis panel in some systems
Warning Before accessing the chassis interior, turn off all power supply switches and unplug the
power cord. Use extreme caution when working near the backplane; high voltage is present when
the system is operating.
Removing the Arbiter Board
Remove the existing arbiter board as follows:
Step 1 On each installed power supply, turn OFF the power switch and disconnect the power cable
from the power source.
Step 2 Remove the front panels according to the procedure in the section “Removing and
Replacing the Front Chassis Panels” earlier in this chapter.
Step 3 Locate the arbiter board (see Figure 5-30), which is mounted directly to the upper part of
the backplane above the power bus bar. The arbiter board is held in place by the connector
and three Phillips screws as shown in Figure 5-34.
Phillips screws
H1408a
Backplane
connector
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