User Guide

2 Troubleshooting 2.4 System Board
2-14 Satellite M20 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
mai n board power i s stabl e
1H DI AG_A20_DI SA BLE Di sabl e 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_EXECUTE_I N_DRAM program executi on f rom DRAM
6H DIAG_USER_FLASH_CHECK Test print port for check
cri si s opti on i s enabl e 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 SIS_BOOT Proceed wi th Cri si s Boot,f i rst i ni ti 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 t he Cr i si s r ecov ery pr ocedur e
99H DI AG_RESUME_RAM_ERROR Resume SMRAM not Found
10H DEBUG_ M I SC_ RESET Di sabl e i nt ernal cache r am, and
reset cpu
11H DEBUG_CS_FA ST_A20_RESET Turn of f FA STA20 for post,and check have key boar d
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 Ini ti al i ze Counter and Ti mer chi p
16H DEBUG_OEM_SET_CMOS_REGS User regi ster conf i g through CMOS
17H DEBUG_CS_MEMORY_SI ZE Si ze Memory, and detect memory ti mi 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_V I DEO_V IDEO_I NI T I ni ti al ize V i deo Adapter(s),and check vga rom and
vga ram
1CH DEBUG_V I DEO_EQUI P_I NIT Ini ti al i ze Vi deo (6845 Regs),set di spl ay mode
1DH DEBUG_V I DEO_COLOR_I NI T Ini ti ali ze Col or A dapter,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 st ers