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2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Table 2-3 Printer port LED boot mode status (4/8)
LED Status Test item Message
(Initialization of a device which
needs initialization before
initialization of PCI bus)
Test of PIT CH2 (Check whether the speaker gate is
working properly.)
Measuring of CPU clock
Enabling SMI except for auto-off function
Control of battery discharge current (10mA)
Division process of measuring IRT time
Setting for clock generator
Check of parameter block A
CPU initialization
Update of micro code
Check of Geyserville support
Setting of CPU clock to high
(05H)
Setting of Graphics Aperature Size
Storing memory configuration in
buffer
Reading EC version
Update of flash ROM type
Evaluation of destination
(home/overseas) by DMI data
Setting default when a CMOS
default error (Bad Battery, Bad
Checksum (ROM, CMOS))
occurred
Initialization of ACPI table (for
executing an option ROM)
AC’97 control
Initialization of temperature control information
KBC initialization
VGA display off and reset control
Sound initialization
Acquisition of status
HC initialization, Recognition of USB device connection
and initialization
Initialization of a device that needs
initialization before PCI bus
initialization
Control of interval LAN enable/disable
PIC initialization
06H
PIC test
TECRA M1 Maintenance Manual (960-436) 2-23