Toshiba libretto U100 Maintenance Manual page 71

2.4 System Board Troubleshooting
LED Status
F10AH
F10BH
F10CH
F10DH
F10EH
F10FH
F110H
F112H
F113H
F114H
F115H
F117H
F118H
F119H
F11AH
F11BH
libretto U100 Maintenance Manual (960-520)
Table 2-4 D port status (6/8)
Test item
Running a task waiting for the completion of
PCI_CONFIGURATION
Initialization of H/W that is necessary after PCI
configuration
Enabling power off
Creating output code
FIRST_64KB_CHECK (Check memory of first 64KB)
INIT_INT_VECTOR (Vector initialization)
INIT_DNP (NDP initialization)
INIT_SYSTEM (System initialization)
INIT_DISPLAY (Waiting for VGA chip initialization, VGA
BIOS Initialization)
Calling VGA BIOS
DISP_LOGO (LOGO display) (not display when
Diagnostic Mode is not permitted.)
SYS_MEM_CHECK (Conventional memory check)
(Boot)
EXT_MEM_CHECK (Check of exceptional cases in
protected mode) (Boot)
(DPORT=F116H when error occurs error in the
exceptional check in protected mode.)
INT_SYS _ MEM (Conventional memory initialization)
(Reboot)
CHK_DMA_PAGE (Check of DMA Page Register )(Boot)
CHECK_DMAC (Check of DMAC) (Boot)
INIT_DMAC (DMAC initialization) (Boot)
CHECK_PRT (Check of printer port existence) (model
supporting PRT)
CHECK_SIO (Check of SIO) (model supporting SIO)
2 Troubleshooting Procedures
Message
Setting of printer port (model supporting PRT)
Initialization of HDD sequence start
Initialization of FDD sequence start (Internal FDD
model)
Storing CMOS error status in IRT_ERR_STS_BUF
Control of CD POWER SW (CD play supporting model)
Start of TIMER initialization
Initialization of EC and reading battery information
Update of system BIOS (EDID of the LCD)
Waiting for VGA power on
Waiting for completion of display access
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