Toshiba TECRA S1 - Manual (Page 51)

2 Troubleshooting 2.4 System Board
2-14 TECRA S1 Maintenance Manual
Table 2-1 Printer port LED boot mode status (1/3)
LED Status
(Hexadecimal)
Test Item Description
0H DIAG_SYSTEM_INIT Boot started,read the cmos data for makesure
main board power is stable
1H DIAG_A20_DISABLE Disable A20 through A20
2H DIAG_INIT_CHIPSET Initialize ChipsetSet,load chipset default
size chache RAM
3H DIAG_TEST_RAM send patten for test the basic 640k RAM
4H DIAG_MOVE_BB_LOADER Move boot load segment into the RAM
5H DIAG_EXECUTE_IN_DRAM program execution from DRAM
6H DIAG_USER_FLASH_CHECK Test print port for check
crisis option is enable or not
7H DIAG_SHADOW_BIOS Decompress the system BIOS, and
Shadow System BIOS to RAM
8H DIAG_CHECKSUM_BIOS Checksum System BIOS ROM
9H DIAG_NORMAL_BOOT Jump to the reset point
AH DIAG_CRISIS_BOOT Proceed with Crisis Boot,first initial
superio and boot device
FH DIAG_FATAL_ERROR Fatal Error,like the RAM error or ROM error
CCH DIAG_CRISIS_BEGIN Start process the Crisis recovery procedure
99H DIAG_RESUME_RAM_ERROR Resume SMRAM not Found
10H DEBUG_MISC_RESET Disable internal cache ram,and
reset cpu
11H DEBUG_CS_FAST_A20_RESET Turn off FASTA20 for post,and check have keyboard
controllor
12H DEBUG_POST_SIGNAL_POR Initial PIC enable INT and Signal Power On Reset
13H DEBUG_CS_CHIP_INIT Initialize the Chipset and hook PCI BIOS
14H DEBUG_OEM_ISA_VGA_SEARCH Search For ISA Bus VGA Adapter, from address c000
to e000
15H DEBUG_HWIO_SETUP_CTC1 Initialize Counter and Timer chip
16H DEBUG_OEM_SET_CMOS_REGS User register config through CMOS
17H DEBUG_CS_MEMORY_SIZE Size Memory, and detect memory timing,
setup memory controllor
18H DEBUG_POST_TEST_RAM Initialize and test the first 64k memory
19H DEBUG_GEN_TEST_ROMS checksum the system ROM
1AH DEBUG_HWIO_RESET_INTS Reset PIC's status
1BH DEBUG_VIDEO_VIDEO_INIT Initialize Video Adapter(s),and check vga rom and
vga ram
1CH DEBUG_VIDEO_EQUIP_INIT Initialize Video (6845 Regs),set display mode
1DH DEBUG_VIDEO_COLOR_INIT Initialize Color Adapter,and setup display reg.
1EH DEBUG_VIDEO_BW_INIT Initialize Monochrome Adapter,and setup display
reg.
1FH DEBUG_HWIO_TEST_DMA_PAG Send out some value,to test 8237A Page Registers