Toshiba Tecra A2-S239 Maintenance Manual - Page 81

2.4 System Board Troubleshooting 2 Troubleshooting Procedures Table 2-3 D port status (7/9) D port status F10Eh Inspection items INIT_SYSTEM (Initialization of system) Details Storing CMOS error information in IRT_ERR_STS_BUF F10Fh F110h F112h F113h F114h F115h F117h Timer initialization start Initializing an EC, and reading battery information Updating system BIOS (Updating EDID of the LCD) Initializing the display Waiting for VGA chip initialization completion Initializing VGA BIOS Displaying a logo Displaying a logo on the screen SYS_MEM_CHACK Checking conventional memory (Boot) EXT_MEM_CHECK Exception check in protect mode (Cold boot only) INIT_SYS_MEM Initializing conventional memory (Reboot) (DPORT=F114H if an error occurred during exception check in protected mode) CHK_DMA_PAGE Check of DMA page Register (Cold boot only) F118h F119h F11Ah F11Bh F11Ch Checking a DMAC Initialization of DMA CHECK _PRT Checking SIO BOOT_PASSWORD (In the case of "Reboot") (In the case of "Boot") Checking a DMAC (Boot) Initializing DMA (Cold boot only) Checking a printer port existence (for models supporting PRT) Checking a SIO port (for models supporting SIO) Check of password Waiting for the end of the FDD initialization process (for models supporting built-in FDD) Waiting for the end of the HDD initialization Checking key input during IRT (Waiting for KBC initialization completion ATA priority Initialization BM loading process (for models supporting fingerprint certification function) Initializing BM (for models supporting fingerprint certification function) F11Dh Checking optional I/O ROM Check of key input during IRT (waiting for KBC initialization completion) Input of password BM open (for models supporting fingerprint certification function) Checking optional I/O ROM Satellite A50/TECRA A2 Maintenance Manual (960-478) 2-27