Toshiba Portege R200, Maintenance Manual

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2.4 System board Troubleshooting 2 Troubleshooting
PORTEGE R200 Maintenance Manual (960-519) [CONFIDENTIAL] 2-23
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. F101H
SM-RAM stack area test HLT when DRAM size is 0
Test of SM-RAM stuck area (HLT when can not be used
as 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
CMOS checksum check
Initialization of CMOS data (1)
Setting of IRT status (Boot status and IRT busy flag, the
remaining bit is 0.)
F102H
CMOS checksum check
Storing DRAM size
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 F173H)
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
F103H
Copying ROM/RAM of system BIOS (HLT at error)