Toshiba A20-S259 - Satellite - Pentium 4 2.66 GHz Maintenance Manual page 78

2 Troubleshooting Procedures
LED Status
09h PnP Hardware initialization
0Ah Output code generation
0Bh First 64KB memory check
0Ch Interrupting vector
initialization
0Dh NDP initialization
0Eh System initialization
0Fh Waiting for the completion of
VGA chip, VGA BIOS
initialization
10h Logo Display
11h System memory check
12h External memory check
2-28
Table 2-3 Printer port LED boot mode status (6/8)
Test item
2.12 Sound Troubleshooting
Message
Running a task for waiting the completion of PnP
resource creating
Serial interrupt control (before executing interrupt)
PnP Hardware initialization
PC card slot initialization
FIR initialization
PCI auto configuration
Preparing work for auto configuration
Acquiring PCI IRQ
Configuration
Storing the result of VGA configuration
Running a task for waiting the completion of PCI
configuration
Initialization of hardware that is necessary after
PCI configuration
Setting of printer port
Start of HDD initialization sequence
SD initialization
Output code generation
First 64KB memory check
Interrupting vector initialization
NDP initialization
Storing CMOS error status in IRT error status
buffer
Start of timer initialization
Initialization of buffer for power save
EC initialization and reading battery information
System BIOS update (Update of model name,
EDID information for LCD)
Waiting for the completion of VGA chip, VGA
BIOS initialization
Logo Display
Conventional memory check (Boot)
Check of exceptional cases in protected mode
(Boot)
Satellite A20 Maintenance Manual (960-444)