Toshiba Satellite A40 Maintenance Manual page 87

2 Troubleshooting Procedures
LED Status
Task generation for waiting
09h
PnP resource making
completion
Serial interruption control
PnP H/W initialization
PCI automatic configuration
Task generation for waiting
0Ah
PCI_CONFIGURATION
completion
Initialization of H/W needed
after PCI configuration
Enabling power off
Output code generation
0Bh FIRST_64KB_CHECK
0Ch INIT_INT_VECTOR
0Dh INIT_NDP
INIT_SYSTEM
0Eh
(Initialization of system)
0Fh INIT_DISPLAY
10h VGA POST
2-28
Table 2-5 Printer port LED status (6/8)
Test item
Task generation for waiting PnP resource making
completion
(before use of interruption)
PC card slot initialization
SIO initialization (for models supporting SIO)
FIR initialization (for models supporting FIR)
Making of work for automatic configuration
Acquisition of PCI IRQ
Configuration
Saving of VGA configuration result
Task generation for waiting PCI_CONFIGURATION
completion
Printer port setting (for models supporting printer
port)
HDD initialization sequence start
FDD initialization (built-in support machine only)
Check of first 64KB memory
Initialization of vectors
Initialization of NDP
Storing of CMOS error status to
IRT_ERR_STS_BUF
Timer initialization start
Initialization of buffers for power saving
EC initialization & Reading of battery information
Update of system BIOS (Update of model name and
EDID information for LCD)
Waiting for VGA chip initialization completion
VGA BIOS initialization
2.4 System Board Troubleshooting
Contents
Satellite A40 Maintenance Manual (960-458)