Toshiba PORTEGE M400 Maintenance Manual page 76

2 Troubleshooting
Table 2-3 Debug port (Boot mode) error status (8/10)
D port
Inspection items
status
F11Ah INIT_DMAC (boot mode)
F11Bh CHECK_SIO (for models
supporting SIO)
F11Dh Diagnostic Test
F11Eh BOOT_PASSWORD
(password check)
F11Fh EX_IO_ROM_CHECK
F120h PRE_BOOT_SETUP
2-28 [CONFIDENTIAL]
2.4 System board Troubleshooting
Details
Initialization of DMAC
Check of Serial port existence
In Models supporting Diagnostic Mode, it is enabled.
(In Reboot Mode)
Waiting for HDD initialization completion
Check of key input during IRT (waiting for
KBC initialization completion)
ATA priority initialization
(In Boot Mode)
BM loading process (for models supporting
fingerprint authentication)
Initialization of BM (for models supporting
fingerprint authentication)
Check of key input during IRT (waiting for KBC
initialization completion)
Input of password
I/O LOCK process (for models supporting
I/O lock)
TPM initialization (models supporting TPM)
Check of option I/O ROM
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 completion of BIOS rewriting of PSC
version
PORTEGE M400 Maintenance Manual (960-541)