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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 stabl e
1H DI AG_A 20_DI SABL E Di sable A20 through A20
2H DIAG_INIT_CHIPSET Initialize ChipsetSet,load chipset default
si ze chache RA M
3H DIAG_TEST_RAM send patten for test the basic 640k RAM
4H DI AG_MOVE_BB_LOADER Move boot l oad segment i nto the RAM
5H DI AG_EX ECUTE_IN_DRAM program execution from DRAM
6H DIAG_USER_FLASH_CHECK Test print port for check
crisis opti on i s 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 DI AG_CRI SI S_BOOT Proceed wi th Crisi s Boot,fi rst i niti al
superi o and boot devi ce
FH DIAG_FATAL_ERROR Fatal Error,like the RAM error or ROM error
CCH DI A G_ CRI SI S_BEGI N St art pr ocess the Cr i si s recover y pr ocedure
99H DI AG_RESUME_RAM_ERROR Resume SMRAM not Found
10H DEB UG_ M I SC_ RESET Di sabl e i nt ernal cache ram, and
reset cpu
11H DEBUG_CS_FAST_A 20_RESET Turn off FASTA20 for post,and check hav e 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_HWI O_SETUP_CTC1 Initiali ze Counter and Ti mer chi p
16H DEBUG_OEM_SET_CMOS_REGS User register confi g through CMOS
17H DEBUG_CS_MEMORY_SI ZE Size Memory, and detect memory timi ng,
setup memory control lor
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_VI DEO_I NIT Ini ti al ize Vi deo Adapter(s),and check vga rom and
vga ram
1CH DEBUG_VIDEO_EQUI P_I NIT Initiali ze Vi deo (6845 Regs),set display mode
1DH DEBUG_VIDEO_COLOR_I NI T Ini ti al ize Col or Adapter,and setup di splay reg.
1EH DEBUG_VIDEO_BW_INIT Initialize Monochrome Adapter,and setup display
reg.
1FH DEBUG_HWI O_TEST_DMA_PAG Send out some value,to test 8237A Page Regi ster s