Specifications

Memory Replacement Instructions for the Network Processing Engine and Input/Output Controller 51

Reconnecting Input Power and Powering Up the Router

Caution When the power switch on a Cisco uBR7200 series power supply is turned to the OFF (0)

position, the power supply will enter a reset cycle for ninety (90) seconds. Wait at least ninety (90)

seconds before turning the power switch back to the ON (|) position. If you do not wait the full ninety

(90) seconds, the power supply will not restart.

Step 2 At the rear of the router, place the power switch on the power supply in the ON (|)

position. Repeat this step if a second power supply is installed in the router. The green

OK LED on the power supply turns on.

Step 3 Listen for the fans; you should immediately hear them operating.

Step 4 During the boot process, observe the system’s LEDs. The LEDs on most of the port

adapters and the Cisco uBR7200 series cable modem cards go on and off in irregular

sequence. Some may go on, go out, and go on again for a short time. On the I/O controller,

the IO power OK LED comes on immediately.

Step 5 Observe the initialization process. When the system boot is complete (a few seconds), the

network processing engine begins to initialize the port adapters, Cisco uBR7200 series

cable modem cards, and the I/O controller. During this initialization, the LEDs on each

port adapter behave differently (most ﬂash on and off). The enabled LED on each port

adapter goes on when initialization is completed, and the console screen displays a script

and system banner similar to the following:

Cisco Internetwork Operating System Software

IOS (tm) 7200 Software (C7200-J-M), Version 11.1(17)CA [smith 100]

Compiled Sun 21-Apr-98 04:10 by smith

If the system fails to boot properly, or if the console terminal displays a checksum or memory error,

check the following:

• Ensure that all SIMMs or DIMMs are installed correctly. If necessary, shut down the system and

remove the I/O controller or the network processing engine. Check the SIMMs or DIMMs by

looking straight down on them and then at eye level. The SIMMs or DIMMs should all be aligned

at the same angle and the same height when properly installed. If a SIMM or DIMM appears to

stick out or rest in the socket at a different angle from the others, remove the SIMM or DIMM

and reinsert it. Then replace the I/O controller or the network processing engine and reboot the

system for another installation check.

• Each DRAM SIMM bank must contain SIMMs of the same size and speed or the system will not

operate. SIMMs must be 60 ns or faster. The speed is silkscreened along one edge of the SIMM.

If after several attempts the system fails to restart properly, contact a service representative for

assistance. Before you call, make note of any error messages, unusual LED states, or any other

indications that might help solve the problem.

This completes the procedures for reconnecting input power and powering up the router. This also

completes the procedure for removing and replacing memory SIMMs or DIMMs, and the boot ROM

for the Cisco 7200 series routers and Cisco uBR7200 series routers.