Installation guide

30 Upgrading Memory in Cisco 4000 Series Routers
Replacing Network Processor Modules
Step 5 Once the Flash EPROM card has been replaced, the boot ROMs have been replaced, and
the boot ROM capacity jumpers have been set, replace the component tray in the chassis.
Replacing Network Processor Modules
If you removed network processor modules to gain access to shared memory or the ROM monitor,
follow these steps to replace them:
Step 1 Pick up the module by its handle, align it with the guides on the component tray rear
panel, and hold it gently against the chassis wall. (See Figure 10.)
Step 2 Push the module carefully into place, inserting its male connector into the female
connector on the motherboard without bending the pins.
Step 3 Using a Number 1 Phillips screwdriver, replace the internal module mounting screw on
the end of the module card. (See Figure 10.)
Step 4 Replace the external rear mounting screws, if any, in the rear panel.
Caution Do not overtorque the screws, because this can damage the module or the underlying
motherboard. The maximum screw torque is 7 inch-lb.
Replacing the Component Tray
Follow these steps to replace the component tray in the chassis shell:
Step 1 Insert the component tray into the shell, pushing on the back of the tray while pressing on
the chassis release screw (shown in Figure 2 or Figure 3) with the thumb of your other
hand.
Step 2 Using a Number 2 Phillips screwdriver, tighten the chassis release screw.
Replacing the Final Connections to the Router
Follow these steps to make final connections to the router:
Step 1 Replace all network connections.
Step 2 If you have an AC-powered router, plug the power cord into a 3-terminal, single-phase
power source that provides power within the acceptable range (100 to 240 VAC, 50 to
60 Hz, 3.0 to 1.5 A).
If you have a DC-powered router, rewire the DC-input power supply (40 to 72 VDC) to
the terminal block. The proper wiring sequence is ground to ground, positive to positive,
and negative to negative. (See Figure 25.) After connecting the DC power cables, use a
screwdriver to reinstall the terminal block cover.
Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle
and reinstate power by moving the handle of the circuit breaker to the ON position.
Step 3 Turn ON the power switch. The power LED on the front should go ON.
Step 4 Check the OK LED on the right side of the front panel to verify that it goes ON after a
few seconds delay when booting.