2.4 System Board Troubleshooting

2 Troubleshooting Procedures

Table 2-5 Debug port (Boot mode) error status (9/10)

D port status

Inspection items

Details

 

 

 

F11FH

EX_IO_ROM_CHECK

(Check of option I/O ROM)

 

 

 

 

 

F120H

 

Saving of value in 40:00h (for SIO

 

 

saving/restoring)

 

 

 

 

 

Setting of font address for resume password

 

 

 

 

 

Setting of repeat parameter for USB KB

 

 

 

 

 

Final check of key input during IRT

 

 

 

 

 

Storing of T_SHADOW_RAM_SIZE

 

 

 

 

 

Update of system resource just before booting

 

 

 

 

 

Rewriting of memory map data of INT15h E820h

 

 

function

 

 

 

 

 

Waiting for AC-Link initialization completion

 

 

 

 

 

Renewal of table for DMI

 

 

 

 

 

Copying ACPI table to uppermost of extension

 

 

memory

 

 

waiting for writing completion of PSC Version

 

 

BIOS

 

 

 

 

PRE_BOOT_SETUP

Waiting for completion of setting clock generator

 

 

When error occurred, halt at F121

 

 

Waiting for completion of initialization of Serial

 

 

port (for models supporting SIO)

 

 

 

 

 

Cancel of NMI Mask

 

 

 

 

 

TIT check sum

 

 

 

 

 

Clear of the IRT flag of Runtime side

 

 

 

 

 

Update of check sum of Runtime side

 

 

 

 

 

Hibernation branch (for models supporting BIOS

 

 

Hibernation)

 

 

 

 

 

Initialization of Bluetooth (for models supporting

 

 

Bluetooth)

 

 

 

 

 

Check for existence of target maintenance card

 

 

 

 

 

Prohibition of unused PC card not used

 

 

 

 

 

Setting Wakeup status data for ACPI

 

 

 

 

 

HW initialization just before booting, Waiting for

 

 

initialization completion

 

 

 

PORTEGE R500 Maintenance Manual (960-634) [CONFIDENTIAL]

2-27

Page 73
Image 73
Toshiba r500 manual Bios