Filter
Top Products
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Table 2-5 Printer port LED status (7/8)
LED Status Test item Contents
12h
DISP_LOGO
13h INIT_SYS_MEM Initialization of conventional memory (Boot)
14h EXE_MEM_CHECK Check of exception in the protected mode
15h INIT_SYS_MEM Initialization of conventional memory (Reboot)
17h CHK_DMA_PAGE Check of DMA Page Register (Boot)
18h CHECK_DMAC Check of DMAC (Boot)
19h INIT_DMAC Initialization of DMAC (Boot)
1Ah CHECK_PRT Check of printer port existence
1Bh CHECK_SIO Check of SIO
1Ch BOOT_PASSWORD Check of password
(In the case of “Reboot”) Waiting for HDD initialization completion
Check of key input during IRT (waiting for KBC
initialization completion)
ATA priority initialization
(In the case of “Boot”) BM loading process
Initialization of BM
Check of key input during IRT (waiting for KBC
initialization completion)
Input of password
BM open
1Dh EX_IO_ROM_CHECK Check of option I/O ROM
1Eh PRE_BOOT_SETUP 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