Toshiba A20-S259 Maintenance Manual - Page 79

2.12 Sound Troubleshooting 2 Troubleshooting Procedures Table 2-3 Printer port LED boot mode status (7/8) LED Status 13h 15h 16h 17h 18h 19h 1Ah 1Bh 1Ch Test item System memory initialization * LED=14h when an error is detected in check of exceptional cases in protected mode DMA Page Register check DMAC check DMAC initialization Printer port check SIO check Boot password Extension I/O ROM check Pre Boot Setup Message Initialization of conventional memory (Reboot) DMA Page Register check (Boot) DMAC check (Boot) DMAC initialization (Boot) Printer port check SIO check Password check (Reboot) Waiting for the completion of HDD initialization Key input check during IRT (Waiting for the completion of KBC initialization) Initialization of ATA priority (Boot) Loading BM BM initialization Key input check during IRT (Waiting for the completion of KBC initialization) Password input Releasing BM Optional I/O ROM check Storing the value of 40:00h (for SIO save/restore) Setting of font address for resume password Setting repeat parameters for USB KB Storing T shadow RAW size Update of system resource for preboot Rewriting the memory map data for INT 15h E820h function Waiting for the completion of AC-Link initialization Update of DMI table Copying ACPI table to the top of expansion memory Waiting for the completion of writing PSC version on BIOS Satellite A20 Maintenance Manual (960-444) 2-29