2 Troubleshooting Procedures

2.4 System Board Troubleshooting

Table 2-5 Printer port LED status (8/8)

LED Status

Test item

Contents

 

 

 

(1Ch)

(PRE_BOOT_SETUP)

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

 

 

 

 

 

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

 

 

 

20h

 

Clearance of IRT status

 

 

 

 

 

Update of check sum of Runtime side

 

 

 

2-30

Satellite A40 Maintenance Manual (960-458)

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Toshiba A40 manual LED Status Test item Contents