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2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Satellite A50S/TECRA A3X Maintenance Manual (960-534) [CONFIDENTIAL] 2-23
Table 2-3 D port status (5/9)
D port
status
Inspection items Details
F106H IRT_INI_SMBASE_END
Initialization of the device Which needs
initialization before PCI BUS Initialization
PCI test (at Cold boot only) and Initialization
Setting test pattern in PIT#0 of Channel 0
Checking whether test pattern set can be
read
Initializing the channel 0 of a PIT
(set 55ms for the interval of interrupt
timer)
Initializing the channel 2 of a PIT
(set 664Hz frequency for sound generator)
Testing the channel 1 of a PIT (Checking whether refresh signal works
properly with the cycle of refresh interval
30µs), HLT when timeout
Testing the channel 2 of a PIT (Checking whether speaker gate works
properly)
Measuring the clock speed of a CPU
Permission of SMI except auto-off function
Control the excess of the rated input power
Battery discharge current control (1CmA)
AC adapter rated over current control
Dividing procedures for time measuring of IRT
Setting for clock generator
Checking the parameter block A
Initialization of CPU
Confirming CPU type
Check the support of Geyserville
Set the CPU clock to “High” Set Graphics Aperture Size
F107H IRT_CHK_INI_SYS1_END
Storing the configuration of ROM in a
buffer
Reading EC version
Updating the type of flash memory
Determining what country the computer is
designed to be used in by DMI data
Checking the default settings of CMOS
(When finding Bad Battery, Bad
CheckSum (ROM, CMOS), set default)
Initializing ACPI table
(For executing option ROM)