Toshiba Portege M100 Maintenance Manual - Page 90

2 Troubleshooting Procedures 2.12 LAN Troubleshooting 2.12 LAN Troubleshooting This section describes how to determine if the computer's LAN is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check and Replacement Check Procedure 1 Diagnostic Test Program Execution Check The Sound/LAN/Modem test program is stored in the Diagnostics Disk. For the test, prepare a test Sound/LAN/Modem. Then insert the Diagnostics Disk in the computer's floppy disk drive, turn on the computer and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures. If any errors occur while executing the Sound/LAN/Modem test, go to Procedure 2. Procedure 2 Connector Check and Replacement Check A RJ45 jack with LAN cable is on the System Board. If the LAN malfunctions, the System Board might be damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures. 2-48 PORTEGE M100 Maintenance Manual (960-452)