Toshiba PORTG M500 2 Troubleshooting Procedures 2.4 System Board Troubleshooting , Table 2-4 Debug port (Boot mode) error status (4/10)

2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-26 [CONFIDENTIAL] PORTÉGÉ M500 Maintenance Manual (960-559)
Table 2-4 Debug port (Boot mode) error status (4/10)
D port status Inspection items Details
SM-RAM checksum check
Resume error F173H RSM_SMRAM_ERR
Check of memory configuration change
Resume error F174H RSM_SYSMEM_ERR
RAM area checksum check in system BIOS
Resume error F179H SM_RAMBIOS_ERR
Expansion memory checksum check
Resume error F176H RSM_EXTM EM_ERR
PnP RAM checksum check
Resume error F177H RSM_PNPRAM_ER R
Transition to RESUME-MAIN
Reset of CPU clock to low
Prohibition of all SMI
Clearance of resume status
Return to ROM
Turning area of C0000h to EFFFFh to PCI
(Prohibition of DRAM)
Resume error process
Setting of resume error request
(F103)
Copying ROM/RAM of system BIOS (HLT, when error occurs)
IRT_BIOS_SIGN_CHK
F104H
Check of BIOS signature
(At COLD Boot)
IRT_CHG_RAM_BIOS_END
SMRAM initialization
Check of CPU for HyperThreading
Microcode update
APIC initialization
WakeUp factor check
SMRAM base rewriting and CPU
state map saving for BIOS
F105H
Permission of SMI based on ASMI