Maintenance 5-225
Installing and Configuring Processor Modules
Removing and Replacing MIP Port Adapters
Port adapters provide the ports for the E1 and T1 interfaces. Each port adapter provides one port.
Each MIP is shipped from the factory with one or two port adapters installed. You cannot add ports
to an MIP by installing an additional port adapter. However, you need to remove an existing E1 port
adapter in order to access jumper J6.
Before proceeding, refer to the section “Removing and Replacing the RP, SP, SSP, RSP7000, or
RSP7000CI” in this chapter.
Caution To prevent damaging the MIP and port adapters, remove and install port adapters only
when it is necessary. Do not attempt to isolate faults or to troubleshoot MIPs or interfaces by
swapping port adapters. The surface-mount circuitry on the port adapters will not tolerate excessive
handling. Do not mix T1 and E1 port adapters on the same mother board.
Tools Required
You need the following tools to complete this procedure:
• Number 1 Phillips screwdriver
• 3/16-inch nut driver
• An ESD-preventive wrist strap or other grounding device to prevent ESD damage
Removing a Port Adapter
Port adapters are installed on each MIP at the factory. Each port adapter is anchored to the MIP with
one plastic double-row vertical board-to-board (BTB) connector and four Phillips screws that extend
through standoffs, into the motherboard. (See Figure 5-21.) The port adapter is also anchored to the
carrier faceplate with two jackscrews and two lock washers.
Caution The surface-mounted components on the port adapters are extremely susceptible to ESD
damage. Keep each port adapter in a separate antistatic bag until you are ready to install it. Always
wear an ESD-preventive ground strap and handle boards as little as possible. When you must handle
the board, limit contact to the board edges only, avoiding contact between the board and clothing.
To remove an E1 port adapter from the MIP, refer to Figure 5-21 and perform the following steps:
Step 1 Ensure that the MIP is resting on an antistatic mat or on antistatic foam. You should still be
wearing an ESD-preventive strap.
Step 2 Position the MIP so that it is in the same orientation shown in Figure 5-21.
Step 3 Locate the E1 port adapter to be removed and use a 3/16-inch nut driver to loosen the two
jackscrews, one on either side of the cable connector. (See Figure 5-21.)
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