Table - Toshiba Tecra A8 Maintenance Manual

Maintenance manual
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2.4 System Board Troubleshooting
Table 2-4-1 Debug port (Boot mode) error status (7/9)
D port status
(F10F)
F110
Waiting for VGA chip initialization
completion, VGA BIOS
initialization
F111
Call VGA BIOS
F113
DISP_LOGO (Displaying logo)
F114
SYS_MEM_CHECK
F115
EXT_MEM_CHECK
Exception check in the protected
mode
F116
INIT_SYS_MEM
F118
CHK_DMA_PAGE
F119
CHECK_DMAC
F11A
INIT_DMAC
F11B
CHECK_PRT
F11C
CHECK_SIO
F11D
Displaying the result of
DIAGNOSTIC
F11E
BOOT_PASSWORD (Check of
password)
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Inspection items
2 Troubleshooting Procedures
Details
Control of CD POWER SW (model supporting CD
Play)
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
(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 DMAC) (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)
[CONFIDENTIAL]
2-31

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