Toshiba M200-ST2002 Maintenance Manual - Page 68

2 Troubleshooting Procedures 2.4 System Board Troubleshooting Procedure 3 Diagnostic Test Program Execution Check Execute the following tests from the Diagnostic Test Menu. These tests check the system board. Refer to Chapter 3, Tests and Diagnostic, for more information on how to perform these tests. 1. System test 2. Memory test 3. Keyboard test 4. Display test 5. USB Floppy Disk test 6. ASYNC test 7. Hard Disk test 8. Real Timer test 9. NDP test 10. Expansion test 11. Wireless LAN test 12. Bluetooth test 13. Sound/LAN/Modem test If an error is detected during these tests, go to Procedure 4. Procedure 4 Replacement Check The system board connectors may be disconnected. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform Check 1. Check 1 Visually check for the following: a) Cracked or broken connector housing b) Damaged connector pins If connectors are in good condition, but there is still a problem, go to Check 2. Check 2 The system board may be damaged. Replace the system board with a new one following the steps described in Chapter 4, Replacement Procedures. 2-30 Portege M200 Maintenance Manual (960-457)