Toshiba Tecra M9, Maintenance Manual

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2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-24 [CONFIDENTIAL] TECRA M9 Maintenance Manual (960-631)
Table 2-5 Serial port (Boot mode) error status (4/9)
D port Status
Test item Contents
(F103h) Check of memory configuration change
(Resume error LED=73H)
RAM area checksum check in system BIOS
(Resume error LED=79H)
Expansion memory checksum check
resume error (Resume error LED=76H)
PnP RAM checksum check (Resume
error LED=77H)
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
)
F105h SMRAM initia(model supporting built-in
FDD)lization
Check of CPU for HyperThreading
(model supporting HTT)
APIC initialization
WakeUp factor check
SMRAM base rewriting and CPU state
map saving for BIOS
Permission of SMI based on ASMI
F106h Initialization of devices which need
initialization before PCI bus initialization.
PIT test (Cold boot only) and initialization
Setting of test pattern to channel 0 of
PIT#0
Check whether the set test pattern can be
read
Initialization of PIT channel 0, Setting of
timer interruption interval to 55ms
Initialization of PIT channel 2, Setting of
the sound generator frequency to 664Hz
Test of PIT channel 1 (Check whether the
refresh signal works normally in 30 micro-
s refresh interval.)
HLT, when the time is
out.
Test of PIT channel 2 (Check whether the
speaker gate works normally.)
CPU clock measurement