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3
MAP 0400: Loss of Console Communication
3-53
Diagnostics
2. An RJ-45 Ethernet patch cable connects to port 24.
3. The MDI switch is set to MDI (in). If not, set the switch using a
pencil or other pointed instrument.
c. At the last (bottom) Ethernet hub, verify:
1. The patch cable from the second hub connects to port 12.
2. The MDI switch is set to MDIX (out). If not, set the switch
using a pencil or other pointed instrument.
If two hubs are installed the MDI switch is set to MDIX (out) on the
second hub. If three hubs are installed the MDI switch is set to MDIX
(out) on the third hub.
Was a corrective action performed?
NO YES
↓ Go to step 1.
13
Verify operation of the Ethernet hub or hubs. Inspect each hub for
indications of being powered on, such as:
• Green Power LED illuminated.
• Green Status LEDs illuminated.
Is a hub failure indicated?
YES NO
↓ Go to step 15.
14
Replace the Ethernet hub. Refer to the supporting documentation
shipped with the hub for instructions.
Did hub replacement solve the problem?
NO YES
↓ The switch-to-EFC Server connection is restored and
appears operational.
A switch Ethernet port failure is indicated. Go to step 30.
15
A problem with another LAN-attached device is indicated.