Toshiba A20-S259 - Satellite - Pentium 4 2.66 GHz Maintenance Manual page 80

2 Troubleshooting Procedures
Table 2-3 Printer port LED boot mode status (8/8)
LED Status
(1Ch)
FFh End
2-30
Test item
Waiting for the completion of the clock generator
setting (The system halts in LED=1Dh when an
error is detected.)
Waiting for the completion of Serial Port
initialization
Releasing NMI mask
TIT checksum
Clearing runtime flag in IRT
Update of runtime checksum
Hibernation branch
Bluetooth initialization
Check the presence of a target maintenance card
Disabling the PC card not used
Hardware initialization Pre Boot
Notifying the conditional of DVI connection to VGA
BIOS
Setting of the battery save mode
Setting of date
Waiting for the completion of Bluetooth
initialization
Update of DMI Wakeup factor and SM-BIOS
structure table
Closing the configuration space for PCI device
Cache control
Update of parameter block A
Process related to CPU
Setting CPU clock to setup specification
Waiting for motor of f of the disabled HDD
Final decision of the USB FDD drive information
Process after Pre Boot Setup
Clearing the power status button
Enabling the power button
Measure against the operation failure of USB at
high temperature
2.12 Sound Troubleshooting
Message
Satellite A20 Maintenance Manual (960-444)