FIRMWARE UPGRADES AND TROUBLESHOOTING
System Troubleshooting
350-7951 Quadra User’s Guide 113
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No text on a terminal • To see your own typed entries, enable the echo mode when
using an ASCII terminal (or terminal emulation program)
to control the system from the RS-232 port.
• Use the “ECHO” command to enable or disable the echo
mode.
• When using an application program running on a computer
to control Quadra over the RS-232 port, you may need to
disable the echo mode.
• Check baud rate and protocol settings.
• Check that cables are in good condition and connected
correctly.
Unreliable control of the
Quadra from the RS232
port.
• See the recommendation immediately above. You may
need to disable “ECHO.”
• Check that the “BAUDrate” for the Quadra and your
console device are set to the same speed.
Unable to connect to the
Quadra over the network. • Check that the Quadra is connected to the network using
a standard Ethernet cable.
• Check that you are using the correct IP address.
• If you are unable to connect and are sure that IP address is
correct, check the Subnet mask and make sure that it is
suited to your network configuration.
• If you believe the IP address and Subnet mask are correct
but you still cannot connect, check that this is not a
duplicate IP address. Use the IP “ping” command from
the Windows® command window, and see if there is a
response. If there is a response, turn off Quadra and ping
the IP address again. If there is still a response, a duplicate
address exists.
Unable to connect to
Quadra directly from a
PC (peer to peer
connection).
• Check that Quadra is connected to the PC using an
Ethernet crossover cable. A suitable cable is the Belkin
Part # A3X126-07.
• Check that you are using the correct IP address.
• If you are unable to connect and are sure that the IP
address is correct, check the IP settings of your PC. Many
PCs are set to work with a DHCP server which is not
present when connecting directly to Quadra.
• If you believe that Quadra’s IP address is correct and
your PC has a valid IP address, but you still cannot
connect, check that this is not a duplicate IP address. Use
the IP “ping” command from the Windows command
window, and see if there is a response. If there is a
response, turn off Quadra and ping the IP address again.
If there is still a response, your PC has been set with the
same address as the Quadra.
Tabl e D- 1. Troubleshooting Guide(Continued)
Symptom Recommendations