Toshiba A40 manual Rom

2.4 System Board Troubleshooting 2 Troubleshooting Procedures

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

LED Status	Test item	Contents
06h		Saving memory configuration to buffer
		Reading of EC version
		Update of flash ROM type
		Judging of destination (Japan or except Japan)
		based on DMI data
		CMOS default setting check (Default set if Bad
		battery, Bad checksum (ROM, CMOS) is
		detected)
		ACPI table initialization (for execution of option
		ROM)
		Initialization of devices which need initialization
		before PCI bus initialization
		AC’97 control
		Initialization of temperature control information
		KBC initialization
		VGA display off, Reset control
		Sound initialization
		PC multi-box status acquisition
		HC initialization, USB Device recognition and
		initialization
		Control of built-in LAN permission/prohibition
		PIC initialization
		PIC test
		Check if self test is executed or not (at Cold
		boot only) (space key and printer loop back
		connector check)
		Password Initialization
07h		PCI bus initialization (connection of DS Bus)
		Initialization of LAN information
		WakeUp factor check
08h		Task generation for waiting INIT_PCI
		completion
		CMOS data initialization (2)
		PnP initialization
		Setting of setup items
		Waiting for the completion of Multi-box status
		check
		H/W setting based on resource

Satellite A40 Maintenance Manual (960-458) 2-27