Toshiba A10 manual Printer port LED boot mode status 4/8

2 Troubleshooting Procedures 2.4 System Board Troubleshooting

Table 2-3 Printer port LED boot mode status (4/8)

LED Status	Test item	Contents
(03h)		Forwards the area of C0000h to EFFFFh to PCI
		(prohibition of DRAM)
		Sets resume error request
		Copying ROM/RAM of system BIOS (HLT when
		error occurred)
04h	SMRAM initialization	SMRAM initialization
		WakeUp factor check
		SMRAM base rewriting and CPU state map saving
		for BIOS
		Permission of SMI based on ASMI
05h	Initialization of devices	PIT test (at Cold boot only) and initialization
	which need initialization	Setting of test pattern to channel 0 of PIT#0
	before PCI initialization	Check whether the set test pattern can be read
		Initialization of PIT channel 0 (Setting of timer
		interruption interval to 55ms)
		Initialization of PIT channel 2(Setting of the
		sound generator frequency to 664Hz)
		Test of PIT channel 1 (Check whether the refresh
		signal works normally in 30 micro-s refresh interval.)
		The system halts when the time is out.
		Test of PIT channel 2 (Check whether the
		speaker gate works normally.)
		CPU clock measurement
		Permission of SMI except auto-off function
		Battery discharge current control (1CmA)
		AC adapter rated over current control
		Dividing procedures for time measuring by IRT
		Setting for clock generator
		Check of parameter block A
		CPU Initialization
		microcode update
		Judgement of CPU type
		Geyserville support check
		Setting of CPU clock to “high"
		Graphics Aperture Size setting

2-24 Satellite A10/TECRA A1/Satellite Pro A10 Maintenance Manual (960-445)