Toshiba A20-S259 Maintenance Manual - Page 70

2 Troubleshooting Procedures 2.12 Sound Troubleshooting Procedure 1 Message Check When the power is turned on, the system performs the Initial Reliability Test (IRT) installed in the BIOS ROM. The IRT tests each IC on the system board and initializes it. q If an error message is shown on the display, perform Check 1. q If there is no error message, go to Procedure 2. q If Toshiba MS-DOS or Toshiba Windows XP Pro/Home is properly loaded, go to Procedure 3. Check 1 If one of the following error messages appears on the screen, press F1 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 F1 as the message instructs, the SETUP screen appears to set the system configuration. If the error message (b) appears often when the power is turned on, replace the RTC battery. If any other error message displays, 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 ...... 2-20 Satellite A20 Maintenance Manual (960-444)