Toshiba libretto U100 Series, Руководство по обслуживанию

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2.4 System Board Troubleshooting 2 Troubleshooting Procedures
libretto U100 Maintenance Manual (960-520) [CONFIDENTIAL] 2-25
Table 2-4 D port status (4/8)
D port Status Test item Message
F104H Initialization of SMRAM
Check of Wake Up factor
Rewriting of SMRAM base and storing CPU state map
for BIOS
Permission only SMI by ASMI
F105H
Initialization of devices which need initialization before
initialization of PCI bus
PIT test (in the Cold Boot) and initialization
Setting of test pattern for CH0 of PIT#0
Checks whether the test pattern set can be read.
Initialization of PIT CH0 (Setting of timer interrupt
interval to 55ms)
Initialization of PIT CH2 (Setting of sound generator
frequency to 664Hz)
Test of PIT CH1 (Checks whether a refresh signal is
working properly when refresh interval is set to
30ms. HLT when the time is out.)
Test of PIT CH2 (Checks whether the speaker gate
is working properly.)
Measuring of CPU clock
Checks parameter block A.
Permits SMI except auto-off function
Process for default setting of CMOS
Judge of destination (domestic or overseas)
Judge of panel type / size
Control of over rating of input voltage
Control of battery discharge current (1CmA)
Control of over current rated of AC adapter
Division process for time measuring of IRT
Setting for clock generator
CPU initialization
Update of micro code
Judgement of CPU type
Check of Geyserville support
Setting of CPU clock to “high”
Setting of Graphics Aperture Size (VGA_BUS_0)
F106H Storing memory configuration in buffer
Reading EC version
Update of flash ROM type
Initialization of ACPI table (for executing an option ROM)