Toshiba Satellite A40 Maintenance Manual page 89

2 Troubleshooting Procedures
LED Status
(1Ch) (PRE_BOOT_SETUP)
20h
2-30
Table 2-5 Printer port LED status (8/8)
Test item
Updating of table for DMI
Copy of ACPI table to top of expansion memory
Waiting for completion writing of PSC version to BIOS
Waiting for clock generator setting completion (The
system halts in LED = 1DH when an error is detected.)
Waiting for serial port initialization completion (for models
supporting SIO)
Waiting for Serial Port initialization completion
Cancel of NMI Mask
TIT check sum
Clearance of the IRT flag of Runtime side
Update of check sum of Runtime side
Hibernation branch
Initialization of Bluetooth
Check of existence of object maintenance cards
Prohibition of unused PC cards
HW initialization before Boot, Waiting for initialization
completion
Clearance of IRT status
Update of check sum of Runtime side
2.4 System Board Troubleshooting
Contents
Notifies the DVI connection status to VGA BIOS
Setting of battery save mode
Setting of date
Waiting for Bluetooth initialization completion
Update of DMI Wakeup factor, Update of SM-BIOS
structure table
PCI device configuration space close
Cache control
Update of parameter block A
Process for CPU (Make the CPU clock to be set by
SETUP)
Waiting of motor-off completion of disabled HDD
Final decision of USB FDD drive information
Post processing of PRE_BOOT_SETUP
Clearance of PWRBTN_STS
Enabling POWER Button
Satellite A40 Maintenance Manual (960-458)