Cisco 3000 Series

Replacing
the Chassis Cover and
Tray
Step Using
an EPROM extraction tool
or
small flat-blade
screwdriver
gently
remove
the boot
RUMs and set them aside
Step
Insert the new boot ROMs in their
respective
sockets in the orientation shown in
Figure 5-3 Figure 5-4
Figure
5-5
and
Figure
5-7
being
careful
not to
bend
or
crush
any
of the bottom
pins
To
straighten
out bent
pin
use
needlenose
pliers Align
the notch in the
new
ROM with the notch in the ROM
socket
ignoring
the orientation of the label
Rep bcing
the Chassis Cover and
Tray
After
you perform
the maintenance for
your
system replace
the cover and
component
tray
by
following
these
steps
Step Replace
the metal
power
supply
and
tray assembly
on the chassis
Step Replace
the
power-supply tray
screw
See Figure 5-2
Step Replace
the
ground
wire
by connecting
the
ground
wire to the stud
Step Replace
the DC
power
harness
See Figure 5-2
Step Replace
the chassis
cover
Step Replace
the latch
screw
See Figure 5-1
Step Replace
the chassis
cables
Note The
power
cable is
designed
so
that if it is installed
backwards or
offset
5V is shorted to
ground
This enables the
protective circuitry
on
the
power
supply
to
protect
the
system
card from
reversed
voltage
If this
happens
you
will hear
quiet clicking
from the
power
supply
but
you
will
not hear other
noises
such
as
the
fan
and
no
LEDs will
light
Recovering
Lost Password
An overview
to
recovering
lost
password
follows
Enter the show version
command to note
existing
virtual
configuration
value
Break
to
the
bootstrap
program
prompt RUM monitor
Change
the
configuration register
to 0x141
boot
from
RUM
Enter
the
privileged
mode in the
system bootstrap program the
boot
RUM software
image
Enter
the
show
configuration
command to
display
the enable
password
Change
the
configuration register
value back
to
its
original setting
Note
To recover
lost
password
if
Break
is
disabled on the
router
it is
necessary
to have
physical
access
to the router
5-18
Cisco 3000 Hardware Installation and Maintenance