Toshiba Satellite A50S Series - Page 81

2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Satellite A50S/TECRA A3X Maintenance Manual (960-534) [CONFIDENTIAL] 2-25
Table 2-3 D port status (7/9)
D port
tt
Inspection items Details
Storing of VGA configuration result
F10BH IRT_PCI_CONF_END
Task generation for waiting
PCI_CONFIGURATION completion
Initialization of H/W which is necessary
after PCI configuration
Printer port setting (for models supporting
printer port)
HDD initialization sequence start
FDD initialization sequence start (For models
supporting built-in FDD)
Enabling power off
Output code generation
F10CH IRT_CHK_INI_SYS3_END
FIRST_64KB_CHECK Checking the first 64KB of memory
F10DH IRT_CHK_F64KB_END
INIT_INT_VECTOR Initializing interrupt vectors
F10EH IRT_INI_VECT_END
INIT_NDP Initializing a NDP
F10FH IRT_INI_NDP_END
INIT_SYSTEM (Initialization of system)
Storing CMOS error information in
IRT_ERR_STS_BUF
Timer initialization start
Initializing an EC, and reading battery
Updating system BIOS (Updating EDID of
the LCD)
F110H IRT_INI_SYS_END
INIT_DISPLAY (Waiting for VGA chip initialization
completion ､ Initializing VGA BIOS)
F111H IRT_VGA_POS_START
VGA POST (Waiting for VGA chip initialization
completion ､ Initializing VGA BIOS)
F112H IRT_INI_POST_END
F113H IRT_INI_DISP_END
DISP_LOGO (Displaying a logo)
F114H IRT_DISP_LOGO_END
SYS_MEM_CHECK Checking conventional memory (Boot)
F115H IRT_SYSTEM_CHK_END
EXT_MEM_CHECK Exception check in protect mode (Cold boot
only)