Toshiba Portege M100 Maintenance Manual - Page 98

2 Troubleshooting Procedures 2.14 Wireless LAN Troubleshooting Procedure 4 Replacement Check The wireless LAN board, BT switch board, I/O board and system board are connected to the circuits. Any of these components may be damaged. Refer to Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and then perform the following checks: Check 1 Replace the wireless LAN board with a new one following the instructions in Chapter 4, Replacement Procedures and test the display again. If the problem still exists, perform Check2. Check 2 The Wireless communication switch board may be defective or damaged. Replace it with a new one following the steps in Chapter 4, Replacement Procedures. If the problem still exists, perform Check3. Check 3 Replace the I/O board with a new one following the instructions in Chapter 4, Replacement Procedures and test the display again. If the problem still exists, perform Check 4 Check 4 Replace the system board with a new one following the instructions in Chapter 4, Replacement Procedures. 2-56 PORTEGE M100 Maintenance Manual (960-452)