IBM 6862 User Guide - Page 176

The following figure illustrates the wiring in crossover cables. RJ-45 Modular Connector 10BASE-T / 100BASE-TX RJ-45 Modular Connector Twisted Signal Pair Name Pin 1 TD+ 1 Signal Pin Name 1 TD+ 1 TD 2 2 TD 2 RD+ 3 3 RD+ 2 RD 6 6 RD 3, 4 (Not used) 4, 5, 7, 8 Relative to the device connected to the adapter 4, 5, 7, 8 (Not used) Note: For additional information about Ethernet protocols, refer to your Ethernet documentation. Diagnostic LEDs Green: Indicates the adapter is connected to a hub or switch and is receiving link pulses. If the LNK light isn't on, check all connections at the adapter and the hub. Make sure the hub is transmitting at the correct speed and the drivers are loaded. Also, make sure you have the correct wiring configuration for the adapter to the hub connection. Some hubs require a crossover cable rather than a straight-through cable. Note that this LED will be on when running the diagnostics loopback test without a cable attached to the adapter. Yellow: Indicates 100 Mbps when on, and 10 Mbps when off. Note that this LED may stay on if link is broken during activity. Error messages Note: The error messages shown in this section are available only with the integrated Ethernet controller. These error messages are not available when remote program load (RPL) or dynamic host configuration protocol (DHCP) is used through optional network adapters. If a failure condition occurs after the Ethernet controller is initialized, an error message appears on the screen. The error messages that can occur are shown in the 158 Using Your Personal Computer