Toshiba libretto U100 Series, Руководство по обслуживанию

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-24 [CONFIDENTIAL] libretto U100 Maintenance Manual (960-520)
Table 2-4 D port status (3/8)
D port Status Test item Message
Check of DRAM type and size
Check of DRAM type and size (in Cold boot)
When not-supported memory is connected, HLT after
beeping.
HLT when DRAM size is 0
Memory test of UMA area (when Diagnostic mode is
permitted.)
Memory check of SRAM area ( when Diagnostic Mode is
permitted.)
F101H
SM-RAM stack area test Tests the stuck area of SM-RAM. HLT when it can not
used for stuck.
Cache configuration
Cache permission (L1/L2 cache)
CMOS access test (in Cold Boot) (HLT when an error is
detected.) CMOS access test
Battery level check of CMOS
F102H
CMOS checksum check
CMOS checksum check
Initialization of CMOS data (1)
Setting of IRT status (Boot status and IRT busy flag, the
remaining bit is 0.)
Storing DRAM size
F103H
Resume branch (in Cold Boot)
Not resume when a CMOS error occurred.
Not resume when resume status code is not set.
Resume error check
S3 returning error (1CH)
Resume error
F17AH SM-RAM checksum check Resume error
F173H
Check of memory configuration change
Resume error
Checksum check of RAM area of system BIOS
Resume error
F179H
Checksum check of expansion memory
Resume error)
F176H Checksum check of PnP RAM Resume error
F177H
Transition to RESUME-MAIN
Resume error process
Reset of CPU clock to “low”
Prohibition of all SMI
Clearance of resume status
Returning 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 at error)