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2.4 System board Troubleshooting 2 Troubleshooting
TECRA M4 Maintenance Manual (960-521) [CONFIDENTIAL] 2-29
Table 2-3 Debug port (Boot mode) error status (8/10)
D port
status
Inspection items Details
F11Ah INIT_DMAC (boot mode) Initialization of DMAC
F11Bh CHECK_PRT (for models
supporting printer)
Check of printer port existence
F11Ch CHECK_SIO (for models
supporting SIO)
Check of SIO
F11Dh BOOT_PASSWORD
(password check)
Waiting for FDD initialization completion (for models
supporting built-in FDD)
(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)
Opening BM (for models supporting
fingerprint authentication)
F11Eh EX_IO_ROM_CHECK 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
F11Fh PRE_BOOT_SETUP
Waiting for completion of BIOS rewriting of PSC
version