Toshiba tecra m1 manual 1BH

2.4 System Board Troubleshooting 2 Troubleshooting Procedures

Table 2-3 Printer port LED boot mode status (6/8)

LED Status	Test item	Message
0EH	System initialization	Storing CMOS error status in IRT error status buffer
		Start of TIMER initialization
		Initialization of buffer for power save
		Update of system BIOS (model name, EDID of the LCD)
0FH	Display initialization	Waiting for the end of VGA chip initialization
10H	LOGO display
11H	Conventional memory check	(Boot)
12H	Extension memory check	Check of exceptional cases in protected mode (Boot)
13H	Conventional memory initialization
	(Reboot)
	(LED=14H when an error is
	detected in check of exceptional
	cases in protected mode)
15H	DMA Page Register check	(Boot)
16H	DMAC check	(Boot)
17H	DMAX initialization	(Boot)
18H	Printer check
19H	SIO check
1AH	Password check	(Reboot)
		Waiting for the end of HDD initialization
		Key input check during IRT (Waiting for the end of KBC
		initialization)
		ATA priority initialization
		(Boot)
		BM loading
		BM initialization
		Key input check during IRT (Waiting for the end of KBC
		initialization)
		Password input
		Enabling BM
1BH	Extension I/O ROM check
1CH	Final setting up prior to boot-up	Storing the value of 40:00h (for SIO save/store)
		Font address setting for resume password
		Setting of parameter for character repeat on a USB
		keyboard

TECRA M1 Maintenance Manual (960-436) 2-25