Toshiba Satellite A300 Maintenance Manual - Page 90

2 Troubleshooting Procedures Procedure 1 Message Check When the power is turned on, the system performs the Power On Self Test (POST) installed in the BIOS ROM. The POST tests each IC on the system board and initializes it. ‰ If an error message is shown on the display, perform Check 1. ‰ If there is no error message, go to Procedure 2. ‰ If MS-DOS or Windows XP is properly loaded, go to Procedure 4. Check 1 If one of the following error messages is displayed on the screen, press the F1 key as the message instructs. These errors occur when the system configuration preserved in the RTC memory (CMOS type memory) is not the same as the actual configuration or when the data is lost. If you press the F1 key as the message instructs, the SETUP screen appears to set the system configuration. If error message (b) appears often when the power is turned on, replace the RTC battery. If any other error message is displayed, perform Check 2. (a) *** Bad HDD type *** Check system. Then press [F1] key ...... (b) *** Bad RTC battery *** Check system. Then press [F1] key ...... (c) *** Bad configuration *** Check system. Then press [F1] key ...... (d) *** Bad memory size *** Check system. Then press [F1] key ...... (e) *** Bad time function *** Check system. Then press [F1] key ...... (f) *** Bad check sum (CMOS) *** Check system. Then press [F1] key ...... (g) *** Bad check sum (ROM) *** Check system. Then press [F1] key ...... Check 2 If the following error message is displayed on the screen, press any key as the message instructs. The following error message appears when data stored in RAM under the resume function is lost because the battery has become discharged or the system board is damaged. Go to Procedure 3. WARNING: RESUME FAILURE. PRESS ANY KEY TO CONTINUE. Satellite A300 Maintenance Manual (960-Q08) 14