NEC IP8800/S6300 User Manual

3.   

Troubleshooting Functional Failures in Operation

23

3.3

Problems on Operation Terminal

3.3.1

Unable to Input/Display from the Console Correctly

When there is a problem connecting to the console, follow the instruction in "

."

When there is a problem connecting to the modem, follow the instruction in "

." Also, see the manual provided with the modem.

Table 3-3: Problems and Actions When Connecting to Console

No.

Failure

Troubleshooting Steps

1

Nothing is displayed on the 
screen.

Determine the cause by following the steps below:
1. Check if the ST1 LED on the front panel of the system lights in green. If it is not, see

"

2. Check to see if the cable is connected correctly.
3. Confirm that RS232C cross cable is used.
4. Confirm that communication software settings, including port number, communication

rate, data length, parity bit, stop bit, flow control are set as follows:
Communication rate: 9600 bps (or a custom value) 
Data length: 8 bits
Parity bit: None
Stop bit: 1 bit
Flow control: None

2

You cannot enter any key.

Determine the cause by following the steps below:
1. Data sending/receiving may be interrupted by the XON/XOFF flow control. Restart the

data sending/receiving (press [Q] key with the [Ctrl] key pressed). If the problem
continues, follow the instructions on No.2 and later.

2. Check to see if the communication software is configured properly.
3. The screen may be suspended by [Ctrl]+[S]. Press any key.

3

Abnormal characters are 
displayed upon login.

Negotiation with the communication software may have failed. Check the communication 
rate of the communication software as described below.
1. If the communication rate for the CONSOLE (RS232C) has not been set up using

configuration command line console 0, check to see if the communication rate is
set to 9600 bps in the communication software.

2. If the communication rate for the CONSOLE (RS232C) is set to 1200, 2400, 4800, 9600

or 19200 bps using configuration command line console 0, confirm that the
communication rate in the communication software has been correctly set.

4

Abnormal characters appears 
while entering user name.

Communication rate for the CONSOLE (RS232C) may have been changed. See No. 3.

5

Login is disabled.

Confirm that the login prompt appears on the screen. If it is not the case, starting up the 
system is on the way. Wait for a while.

6

Abnormal characters appear and 
command entry is rejected when 
the communication rate of the 
communication software is 
changed after login.

If the communication rate of the communication software is changed after login, normal 
display is not achieved. Reset the communication rate of the communication software to the 
original setting.

7

Abnormal characters appear 
upon login with HyperTerminal.

Negotiation with the communication software may have failed. See No. 3. Issue a break 
signal using [Alt]+[B]. Depending on the communication rate in HyperTerminal, login 
screen may not appear until you issue several break signals.

8

Item names and contents are not 
displayed in line.

The size of information might be too large to display within one line. Change the screen size 
by setting the communication software and increase the number of characters that can be 
displayed in one line.