User Guide

2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Table 2-3 D port status (5/9)
D port
status
Inspection items Details
(F105h) 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
Micro code update
Confirming CPU type
Check the support of Geyserville
Set the CPU clock to “High”
Set Graphics Aperture Size (except VGA_BUS=0)
F106h Initializing ACPI, KBC, VGA, Storing the configuration of ROM in a buffer
sound function, and PIC 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
Batter
y
, Bad CheckSum
(
ROM, CMOS
)
, set default
)
Initializing ACPI table (For executing option ROM)
Initialization of the device needed initializing before PCI
BUS Initialization
AC’97 control
Initializing information of thermal control
Initializing a KBC
Turning VGA display off and controlling reset
Initializing sound function
Acquiring the computer multiple box status
HC initialization, Recognition of USB device connection
and initialization
Permission/ prohibition of Built-in LAN control
Initializing a PCI
Testing a PIC
Initializing password
Satellite A50/TECRA A2 Maintenance Manual (960-478) 2-25