Toshiba satellite A20 series Maintenance Manual page 79

2.12 Sound Troubleshooting
Table 2-3 Printer port LED boot mode status (7/8)
LED Status
13h System memory initialization
* LED=14h when an error is
detected in check of
exceptional cases in
protected mode
15h DMA Page Register check
16h DMAC check
17h DMAC initialization
18h Printer port check
19h SIO check
1Ah Boot password
1Bh Extension I/O ROM check
1Ch Pre Boot Setup
Satellite A20 Maintenance Manual (960-444)
Test item
Initialization of conventional memory (Reboot)
DMA Page Register check (Boot)
DMAC check (Boot)
DMAC initialization (Boot)
Printer port check
SIO check
Password check
(Reboot)
Waiting for the completion of HDD initialization
Key input check during IRT (Waiting for the
completion of KBC initialization)
Initialization of ATA priority
(Boot)
Loading BM
BM initialization
Key input check during IRT (Waiting for the
completion of KBC initialization)
Password input
Releasing BM
Optional I/O ROM check
Storing the value of 40:00h (for SIO save/restore)
Setting of font address for resume password
Setting repeat parameters for USB KB
Storing T shadow RAW size
Update of system resource for preboot
Rewriting the memory map data for INT 15h
E820h function
Waiting for the completion of AC-Link initialization
Update of DMI table
Copying ACPI table to the top of expansion
memory
Waiting for the completion of writing PSC version
on BIOS
2 Troubleshooting Procedures
Message
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