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Chapter 5
Maintaining the Cisco 6400
Installing an NSP SIMM Module
To replace a SIMM module:
Keep the NSP in the same orientation as in the previous procedure (with the handle facing away and the
Step 1
edge connector toward you).
Remove a new SIMM from the antistatic bag.
Step 2
Caution
Handle SIMMs by the card edges only. SIMMs are sensitive components that can short out if
mishandled.
Hold the SIMM component side up with the connector edge (the metal fingers) closest to you.
Step 3
Step 4
Hold the sides of the SIMM between your thumb and middle finger, with your forefinger against the far
edge, opposite the connector edge
Tilt the SIMM to approximately the same angle as the socket, and insert the entire connector edge into
Step 5
the socket. Insert the first SIMM in the socket farther from you.
When inserting SIMMs, use firm but not excessive pressure. If you damage a socket, you must return
Caution
the NSP to the factory for repair.
Step 6
Gently push the SIMM into the socket until the spring clips snap over the ends of the SIMM. If
necessary, rock the SIMM gently back and forth to seat it properly.
Step 7
Repeat Steps 2 through 6 for the remaining SIMM. Insert the second SIMM in the socket closer to you.
Step 8
When both SIMMs are replaced, check all four alignment holes (two on each SIMM) and ensure that
each spring retainer is visible. If it is not, the SIMM is not seated properly. If a SIMM appears
misaligned, carefully remove it and reseat it in the socket. Push the SIMM firmly back into the socket
until the retainer springs snap into place.
Verifying SIMM Operation
If the system fails to boot properly, or if the console terminal displays a checksum or memory error,
check the following:
•
•
If the system fails to restart properly after several attempts, contact a service representative for
assistance. Before you contact Cisco Systems, make note of any error messages, unusual LED states, or
any other indications that might help identify the problem.
OL-2133-02
Ensure that all SIMMs are installed correctly. Check the SIMMs by looking straight down on them
and then observe them at eye level. The SIMMs should both be aligned at the same angle and should
be at the same height. If one SIMM appears to stick out or rests in the socket at an angle different
from the other, remove the SIMM and reinsert it. Replace the NSP and reboot the system for another
installation check.
Each DRAM SIMM bank must contain SIMMs of the same size and speed, or the system does not
operate. Contact Cisco Systems to order the NSP DRAM upgrade package. Other vendors' parts
might not work properly. (To contact Cisco Systems, see the
section on page
xiv.)
(Figure
5-13).
Cisco 6400 Hardware Installation and Maintenance Guide
Replacing an NSP Module
"Obtaining Technical Assistance"
5-17
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