Lucent Technologies PortMaster PM-2 Hardware Installation Manual page 52

Observing LED Behavior
Table A-1
LED Behavior
During startup, the system
LED blinks once per
second for more than a
minute.
Immediately after booting,
the system LED stays
solidly lit or does not light.
Note: This behavior does
not refer to the boot
sequence, during which the
system LED is not lit for
between 5 and 7 seconds.
A-2
Hardware Problems and Solutions (Continued)
Possible Cause
• DIP switch 2 is up and
no boot server is present.
• Nonvolatile RAM
contents are corrupt.
A component might have
loosened during shipping.
Solution
• If no boot server is available, verify
that DIP switch 2 is down and
reboot; otherwise, see the network
booting procedure in the
Configuration Guide for PortMaster
Products.
• If nonvolatile RAM contents are
corrupt, follow the Configuration
Guide for PortMaster Products
procedure for network booting and
rewriting the contents of
nonvolatile RAM.
Open the PortMaster using antistatic
precautions (see "Safety
Recommendations" on page 2-3).
Verify the following:
• All four SIMMs are firmly seated.
• The PROM is firmly in place.
• The Ethernet card is firmly in
place, and the standoff screws are
tight.
• The expansion board jumpers are
positioned correctly.
• The 60-wire ribbon bus cable is
firmly seated.
If all items have been verified and the
problem is not fixed, refer to
"Observing Boot Messages" on page
A-5, and boot in console mode. If the
boot messages do not suggest a
solution, record the information and
contact Lucent Remote Access
Technical Support.
Communications Server Hardware Installation Guide