Toshiba Portege R500 Maintenance Manual - Page 68
Troubleshooting Procedures, 4 System Board Troubleshooting, Table 2-5, Debug port Boot mode error - bios update
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2 Troubleshooting Procedures 2.4 System Board Troubleshooting Table 2-5 Debug port (Boot mode) error status (4/10) D port status (F103) Inspection items Details 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_EXTMEM_ERR PnP RAM checksum check Resume error F177H RSM_PNPRAM_ERR F104H F105H Transition to RESUME-MAIN Resume error process 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) Setting of resume error request Copying ROM/RAM of system BIOS (HLT, when error occurs) BIOS signature check (case of cold boot) SMRAM initialization Check of CPU for HyperThreading Microcode Update APIC initialization WakeUp factor check SMRAM base rewriting and CPU state map saving for BIOS Permission of SMI based on ASMI 2-22 [CONFIDENTIAL] PORTEGE R500 Maintenance Manual (960-634)