Cisco 7000 Series Hardware Installation And Maintenance Manual page 189

maintenance releases for the Cisco 7000 series are distributed on floppy disk instead of on
replacement EPROMs, some releases may require ROM replacement. System software images also
can be netbooted.
The system software resides on a set of eight EPROMs on the RP. The EPROMs are labeled with a
ROM number that corresponds to the RP EPROM socket in which it should be installed. The sockets
have labels too, although obscure, on the silk-screen portion of the RP board. Each EPROM has a
notch cut on one end to indicate proper orientation. It should be placed so that its notch faces the
same direction as the notch in the EPROM socket. Do not rely on the orientation of the EPROM
labels to indicate the correct position of the EPROMs on the board. Figure 5-7 shows the location
and socket numbers of the EPROMs on the RP.
The jumpers on J3 and J4, which are shown in Figure 5-7, correspond to the size (capacity) of the
EPROMs installed on the RP. If you replace the system software ROMs with new EPROMs of a
different size (for example, if you replace 2-MB EPROMs with 4-MB EPROMs), you will also need
to change the jumper settings on J3 or J4.
Figure 5-7 shows the orientation of J3 and J4 on the RP when set for 2 MB, the factory default.
Figure 5-8 shows the jumper settings for each EPROM size with the jumpers oriented as in
Figure 5-7. For example, if you are installing a new image that resides on 4-MB EPROMs, you will
need to move the jumper on J3 from the upper two posts to the lower two posts. This is not required
if you upgrade by downloading a new software image into Flash memory; it is only necessary when
you physically replace the EPROMs.
Follow these steps to upgrade the EPROMs in the RP:
Step 1 Disconnect any devices connected to the RP console and auxiliary ports.
Step 2 Turn OFF the system power.
Step 3 Follow the steps in the section "Removing CxBus Interface Processors" to remove the RP
from the slot and place it on an antistatic mat or foam pad.
Step 4 On the RP, locate the eight system software EPROMs. (See Figure 5-7.) The label on each
installed EPROM indicates the EPROM number (1 through 8), as shown in Figure 5-7.
Note the orientation of the notches on the end of each EPROM to aid in inserting the new
ones. Do not rely on the orientation of the labels on the new EPROM for correct
positioning.
Caution The correct placement of the EPROM is crucial. If improperly positioned, the EPROM
could be damaged when the system is powered on. Also, to prevent damage to the board or any of
the components from electrostatic discharge, be sure to follow the ESD procedures described in
"Preventing Electrostatic Discharge Damage" in the chapter "Preparing for Installation."
Installing and Configuring Processor Modules
Maintenance 5-31