Black Box KV1700A/E, User Manual

Page: 103 / 110

CHAPTER 9: TROUBLESHOOTING
101
9. Troubleshooting
9.1 Troubleshooting Tips
One or two colors are missing on a server or a user station
• Check the VGA connection between the user station and the monitor.
• Check the VGA connection between the Octet server access module and the server.
• Connect the monitor directly to a server to determine if the video card is causing
the fault.
• If the video quality is poor on all servers from one user station, replace the UTP cable
connecting the user station and the switch.
• Swap ports on the switch to determine if there is a port failure.
• To determine if there is hardware failure, complete one of the following steps: 1) If
the colors are missing on a server, swap the Octet server access module; or 2) If the
colors are missing on a user station, swap the user station.
Video does not display after connection is made to a server
• Make sure that the monitor is compatible with resolution settings on the server.
• The server may be in sleep mode. Use the keyboard or mouse to restore normal
operating mode.
Video quality is poor; colors are missing or too bright
• Make sure the monitor is connected to the user station using a UTP cable and that the
VGA connector is inserted correctly. Other cables, such as STP cables, may cause
poor video quality when used at distances over 400 feet.
• If poor video quality is random, test the cables between tiers of Octet switches.
Switches cannot be made; “Connection timeout” error
message displays
• If any of the green LEDs on the front of the Octet switch are flashing, make sure the
SAMs or Server Access Modules are connected to the server ports and that the user
stations are connected to the user ports. See Figure 3-5 on page 29 for more
information about the location of each ports.
• Make sure that cables between cascaded Octet switches are connected to the correct
ports. In a cascaded switching system, UTP cable is connected from the server ports
on the primary switch to the user ports on the secondary switches. This process may
be repeated to add a tertiary level of switches. Make sure that no switch has a user
port connected back into one of it's own server ports. See
Installing a Cascaded Octet
Switching System on page 37 for more information.
• If any of the green LEDs are still flashing, use the Octoware software to Flash
upgrade the corresponding Octet server access module. See the Octoware software
online help for more information.
• If the Connection timeout error message still displays, power cycle the Octet switch
and start again.
The console port on the Octet switch has locked up
• Check the terminal emulation software settings to ensure accuracy.