64 Service Manual (AA-RS2ED-TE, July 2004)

Diagnostics

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If appropriate, verify that the hubs are correctly daisy-chained, as shown in

Figure 21.

Figure 21: Ethernet Hubs, Daisy-Chained

Note: To check two hubs, use step 1 and step 2 (top and middle hub instructions

only).

1. At the first (top) Ethernet hub, ensure an RJ-45 Ethernet patch cable connects

to port 24 and the medium-dependent interface (MDI) switch is set to MDI

(in).

2. At the middle Ethernet hub, ensure the patch cable from the top hub connects

to port 12, the patch cable from the bottom hub connects to port 24, and the

MDI switch is set to MDI (in).

3. At the bottom Ethernet hub, ensure the patch cable from the middle hub

connects to port 12 and the MDI switch is set to MDIX (out).