Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 100

1-Port Fast Ethernet and 1- or 2-Port Channelized E1/ISDN PRI Balanced or Unbalanced Network Modules
Figure 4-17 Jumpers in Unbalanced 75-Ohm Position (Top Card
TERMINATION
120
CABLE SHIELD
Align the network module with the guides in the chassis and slide it gently into the slot.
Step 6
Step 7 Push the module into place until you feel its edge connector mate securely with the connector on the
motherboard.
Step 8 Fasten the module captive mounting screws into the holes in the chassis, using the Phillips or flat-blade
screwdriver.
If the router was previously running, reinstall the network interface cables and turn on power to the
Step 9
router.
The following warning applies to routers that use a DC power supply:
After wiring the DC power supply, remove the tape from the circuit breaker switch handle and
Warning
reinstate power by moving the handle of the circuit breaker to the ON position. Statement 8
Configuring Balanced Mode
To configure the network module for balanced mode, follow these steps:
Step 1 Turn off electrical power to the router. However, to channel ESD voltages to ground, do not unplug the
power cable. Remove all network interface cables, including telephone cables, from the rear panel.
The following warning applies to routers that use a DC power supply:
Before performing any of the following procedures, ensure that power is removed from the DC
Warning
circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services
the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the
circuit breaker in the OFF position. Statement 7
Loosen the module captive mounting screws, using a Phillips or flat-blade screwdriver.
Step 2
Hold the captive screws between two fingers, and pull the network module toward you until it slides free
Step 3
of the chassis.
Set the network module on an ESD-preventive mat.
Step 4
Using needlenose pliers, set jumpers J5 through J9 on the top terminal block to the 120-ohm position.
Step 5
Set jumpers J4 through J8 on the bottom terminal block to the same 120-ohm position. (See
Cisco Network Modules Hardware Installation Guide
4-10
75
J9
J8
J7
J6
J5
J4
Chapter 4 Connecting Fast Ethernet-PRI Network Modules
)
Figure 4-16.)
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