Toshiba TECRA A8 series Maintenance Manual page 88

2 Troubleshooting Procedures
D port status
(F10F)
F110
F111
F113
F114
F115
F116
F118
F119
F11A
F11B
F11C
F11D
F11E
2-40
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Table 2-4-2 Debug port (Boot mode) error status (7/9)
Inspection items
Waiting for VGA chip initialization
completion, VGA BIOS
initialization
Call VGA BIOS
DISP_LOGO (Displaying logo)
SYS_MEM_CHECK
EXT_MEM_CHECK
Exception check in the protected
mode
INIT_SYS_MEM
CHK_DMA_PAGE
CHECK_DMAC
INIT_DMAC
CHECK_PRT
CHECK_SIO
Displaying the result of
DIAGNOSTIC
BOOT_PASSWORD (Check of
password)
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2.4 System Board Troubleshooting
Timer initialization start
EC initialization & Reading of battery information
Update of system BIOS (Update of EDID information
for LCD)
Waiting VGA power on
Waiting completion of display access
Start of waiting logo display DPORT=F125 (not
used)
(Check of convention memory)(Boot)
(Check of exception in the protected mode)(Boot)
DPORT=F117h when error occurs
Initialization of conventional memory (Reboot)
(Check of DMA Page Register) (Boot)
(Initialization of DMAC) (Boot)
(Initialization of DMA) (Boot)
(Check of printer existence) (For models supporting
Printer port)
(Check of SIO) (model supporting SIO)
(When the DIAGNOSTIC mode is permitted)
Waiting for FDD initialization completion in Reboot
mode (model with built-in FDD)
Waiting for HDD initialization completion
Check of key input during IRT (waiting for KBC
initialization completion)
I/O LOCK process (model supporting I/O LOCK)
Initialization of ATA priority in Boot mode
Key input check during IRT (waiting here completion
of KBC initialization)
Input password (Waiting completion of HDD
initialization)
I/O LOCK process (model supporting I/O LOCK)
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
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