Service manual

C-20 AlphaServer 4000/4100 Service Manual
Table C-3 RCM Troubleshooting (Continued)
Symptom Possible Cause Suggested Solution
After the system and
RCM are powered
up, the COM port
seems to hang and
then starts working
after a few seconds.
This delay is normal behavior. Wait a few seconds for the
COM port to start working.
RCM installation is
complete, but
system will not
power up.
RCM Power Control: is set to
DISABLE.
Enter RCM console and
issue the poweron
command.
New
password,
escape sequence,
and modem enable
state are forgotten
when system and
RCM module are
powered down.
The password and option reset
jumper is still installed. If the
RCM section of the server
control module does not have an
orange relay, the jumper
number is J6. If it does have an
orange relay, the number is J7.
After resetting
RCM to
factory defaults, move the
jumper so that it is sitting
on only one pin.
The remote user
sees a “+++” string
on the screen.
The modem is confirming
whether the modem has really
lost carrier. This occurs when
the modem sees an idle time,
followed by a “3,” followed by
a carriage return, with no
subsequent traffic. If the
modem is still connected, it will
remain so.
This is normal behavior.
The message
“unknown
command” is
displayed when the
user enters a
carriage return by
itself.
The terminal or terminal
emulator is including a linefeed
character with the carriage
return.
Change the terminal or
terminal emulator setting so
that “new line” is not
selected.
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