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This chapter describes how to remove the PA-2CE1 port adapter from supported platforms and also how to install a new or replacement port adapter. This chapter contains the following sections:
Each port adapter circuit board is mounted to a metal carrier and is sensitive to electrostatic discharge (ESD) damage.
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Note When a port adapter slot is not in use, a blank port adapter must fill the empty slot to allow the router or switch to conform to electromagnetic interference (EMI) emissions requirements and to allow proper airflow across the port adapters. If you plan to install a new port adapter in a slot that is not in use, you must first remove the blank port adapter. |
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Caution Always handle the port adapter by the carrier edges and handle; never touch the port adapter components or connector pins. (See Figure 3-1.) |
Several platforms support online insertion and removal (OIR) of port adapters; therefore, you do not have to power down routers when removing and replacing a PA-2CE1 in Cisco 7200 series routers or Cisco 7200 VXR routers.
Although the VIP2 supports online insertion and removal, individual port adapters do not. To replace port adapters, you must first remove the VIP2 from the chassis and then install or replace port adapters as required. If a blank port adapter is installed on the VIP2 on which you want to install a new port adapter, you must first remove the VIP2 from the chassis and then remove the blank port adapter.
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Caution To prevent system problems, do not remove port adapters from the VIP2 motherboard or attempt to install other port adapters on the motherboard when the system is operating. To install or replace port adapters, first remove the VIP2 from its interface processor slot. |
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Note As you disengage the port adapter from the router or switch, online insertion and removal (OIR) administratively shuts down all active interfaces in the port adapter. |
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Note Before you begin installation, read "Preparing for Installation," for a list of parts and tools required for installation. |
Observe the following warnings and cautions when installing or removing port adapters.
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Caution Do not slide a port adapter all the way into the slot until you have connected all required cables. Trying to do so disrupts normal operation of the router or switch. |
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Note If a port adapter lever or other retaining mechanism does not move to the locked position, the port adapter is not completely seated in the midplane. Carefully pull the port adapter halfway out of the slot, reinsert it, and move the port adapter lever or other mechanism to the locked position. |
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Caution To prevent jamming the carrier between the upper and the lower edges of the port adapter slot, and to ensure that the edge connector at the rear of the port adapter mates with the connection at the rear of the port adapter slot, make certain that the carrier is positioned correctly, as shown in the cutaway in the following illustrations. |
In this section, the illustrations that follow give step-by-step instructions on how to remove and install port adapters. This section contains the following illustrations:
—Removing and Installing a Port AdapterOn a single PA-2CE1, you can use up to two G.703 serial connections.
Use the following procedure to connect a PA-2CE1 interface cable:
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Note Port adapters have a handle attached, but this handle is not shown to allow a detailed view of each port adapter faceplate. |
Step 2 Attach the network end of the cable to your Primary Rate Interface (PRI) channel service unit (CSU) and tighten the strain-relief screws.
Step 3 Repeat Step 1 and Step 2 for additional cables you want to install.
This completes the procedure for attaching a PA-2CE1 interface cable.
Depending on the circumstances, you might need to change the configuration of both PA-2CE1 interfaces for balanced 120-ohm connections or unbalanced 75-ohm connections.
Configuring PA-2CE1 interfaces for balanced 120-ohm or unbalanced 75-ohm connections requires setting ten jumpers on the 2CE1 printed circuit board and attaching the appropriate interface cable (balanced or unbalanced) to both 2CE1 ports. See the "Cables, Connectors, and Pinouts" section for 2CE1 interface cable types. The following steps explain how to set 2CE1 jumpers for balanced 120-ohm or unbalanced 75-ohm connections.
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Note Both 2CE1 ports must be configured for balanced 120-ohm or unbalanced 75-ohm connections. The PA-2CE1 does not support a mixed connection configuration. |
Step 2 Remove the VIP2 from the chassis. To do so, follow the steps in the section "Removing a VIP2" in the configuration note Second-Generation Versatile Interface Processor (VIP2) Installation and Configuration, which shipped with your VIP2.
Step 3 Remove the installed PA-2CE1 from the VIP2. See the "VIP2Removing and Installing a Port Adapter" section for port adapter removal procedures.
Step 4 With the PA-2CE1 on an antistatic mat, use a number 1 Phillips screwdriver to remove the three screws that secure the plastic jumper cover to the 2CE1 printed circuit board. (See Figure 3-3.) Save the screws.
Step 5 Set the ten jumpers on the 2CE1 printed circuit board for balanced 120-ohm or unbalanced 75-ohm interface connections.
Jumper locations J2, J3, J5, J8, J9, J11, J12, and J14 have three pins, and jumper locations J4 and J10 have two pins. Each jumper location is configured by placing an insulated jumper over two pins (leaving the third pin of a three-pin jumper location exposed). In balanced 120-ohm configurations, the insulated jumper covers both pins of jumper locations J4 and J10. In unbalanced 75-ohm configurations, the insulated jumper is not present on jumper locations J4 and J10. Table 3-1 lists the 2CE1 jumper locations and their jumper settings. Figure 3-4 and Figure 3-5 show balanced 120-ohm and unbalanced 75-ohm 2CE1 jumper configurations, respectively.
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Note In balanced 120-ohm and unbalanced 75-ohm configurations, an insulated jumper covers the left two pins of jumper locations J7 and J13; it is not present on jumper location J15. (See Table 3-1.) |
| Balanced 120-Ohm Configuration | Unbalanced 75-Ohm Configuration | ||
|---|---|---|---|
| Jumper Location | Jumper Setting | Jumper Location | Jumper Setting |
J2 | Right two pins | J2 | Left two pins |
J3 | Right two pins | J3 | Left two pins |
J5 | Right two pins | J5 | Left two pins |
J7 | Left two pins | J7 | Left two pins |
J8 | Right two pins | J8 | Left two pins |
J9 | Right two pins | J9 | Left two pins |
J11 | Right two pins | J11 | Left two pins |
J12 | Right two pins | J12 | Left two pins |
J13 | Left two pins | J13 | Left two pins |
J14 | Right two pins | J14 | Left two pins |
J4 | Present | J4 | Not present |
J10 | Present | J10 | Not present |
J15 | Not present | J15 | Not Present |
Step 6 Replace the plastic jumper cover over the 2CE1 jumpers and secure it to the port adapter printed circuit board using a number 1 Phillips screwdriver and the screws that you saved in Step 4.
Step 7 Replace the PA-2CE1 in the VIP2. See the "VIP2Removing and Installing a Port Adapter" section for port adapter replacement procedures.
Step 8 Replace the VIP2 in the chassis. To do so, follow the steps in the section "Installing a VIP2" in the configuration note Second-Generation Versatile Interface Processor (VIP2) Installation and Configuration, which shipped with your VIP2.
Posted: Thu Aug 31 08:18:40 PDT 2000
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