Toshiba Satellite A40 Maintenance Manual - Page 88

2.4 System Board Troubleshooting 2 Troubleshooting Procedures Table 2-5 Printer port LED status (7/8) LED Status Test item 12h DISP _LOGO 13h INIT_SYS_MEM 14h EXE_MEM_CHECK 15h INIT_SYS_MEM 17h CHK_DMA _PAGE 18h CHECK_DMAC 19h INIT_DMAC 1Ah CHECK_PRT 1Bh CHECK_SIO 1Ch BOOT_PASSWORD (In the case of "Reboot") (In the case of "Boot ") 1Dh EX_IO_ROM_CHECK 1Eh PRE_BOOT_SETUP Contents Initialization of conventional memory (Boot) Check of exception in the protected mode Initialization of conventional memory (Reboot) Check of DMA Page Register (Boot) Check of DMAC (Boot ) Initialization of DMAC (Boot ) Check of printer port existence Check of SIO Check of password Waiting for HDD initialization completion Check of key input during IRT (waiting for KBC initialization completion) ATA priority initialization BM loading process Initialization of BM Check of key input during IRT (waiting for KBC initialization completion) Input of password BM open Check of option I/O ROM Saving of value in 40:00h (for SIO saving/restoring) Setting of font address for resume password Setting of repeat parameter for USB KB Final check of key input during IRT Storing of T_SHADOW_RAM_SIZE Update of system resource before boot Rewriting of memory map data of INT15h E820h function Waiting for AC-Link initialization completion Satellite A40 Maintenance Manual (960-458) 2-29