Installation guide

Upgrading Memory in Cisco 4000 Series Routers 31
Cisco Documentation
If you installed a new ROM incorrectly, the router may fail to boot. Following the procedures in this
document, gently remove the old ROM with an IC extraction tool or a small flat-blade screwdriver,
and set it aside. Use needlenose pliers to straighten any bent pins on the ROM. Then reinstall it
carefully, reassemble the router, and try booting again.
If you have questions or need help, refer to the sections “Cisco Documentation” and “Cisco
Connection Online” later in this document.
Figure 25 DC-Input Power Supply Connections
Cisco Documentation
Cisco documentation and additional literature are available in a CD-ROM package, which ships with
your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated
monthly. Therefore, it might be more up to date than printed documentation. To order additional
copies of the Documentation CD-ROM, contact your local sales representative or call customer
service. The CD-ROM package is available as a single package or as an annual subscription. You
can also access Cisco documentation on the World Wide Web at http://www.cisco.com,
http://www-china.cisco.com, or http://www-europe.cisco.com.
Terminal block
H2552
Positive
Negative
Grommet
Terminal block cover
Ground
Terminal block
On/off
Captive screw
Grommet
Terminal block cover