3com 5101T-FB-ST User Manual

The following list describes causes of faulty trans-
ceiver cables:

■

Improper Grounding (pin 1 vs. pin 4).

■

Bad ground:

■

Shell connector not crimped onto AUI 
cable braid.

■

Ribbon cables in computers not shielded 
or improperly mounted.

■

Broken pair wires or unseated AUI connec-
tor pin.

■

Improper pairing - Verify that signal and 
power wires are paired (for example,
Transmit + paired with Transmit -)

■

Individual pairs not individually shielded (for 
example, Ethernet V1.0 type cable).