Table - Toshiba PORTEGE S100 Maintenance Manual

2 Troubleshooting Procedures
LED Status
0Bh
0Ch FIRST_64KB_CHECK (Check
memory of first 64KB)
0Dh FIRST_64KB_CHECK
0Eh
0Fh
10h
11h
13h
14h SYS_MEM_CHECK
15h
16h
18h CHK_DMA_PAGE
19h CHECK_DMAC
1Ah
1Bh CHECK_PRT
1Ch
1Dh BOOT_PASSW
2-24
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Table 2-4 D port status (6/8)
Test item
Running a task waiting the end of
PCI_CONFIGURATION
Initialization of H/W that is necessary after PCI
configuration
Setting of printer port (PRT supporting model)
Initialization of HDD sequence start
Initialization of FDD sequence start (Internal FDD
model)
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)
Storing CMOS error status in IRT_ERR_STS_BUF
Start of TIMER initialization
Initialization of EC and Reading battery information
Update of system BIOS (model name, EDID of the
LCD)
INIT_DISPLAY (Waiting for VGA chip initialization, VGA
BIOS Initialization)
VGA POST
DISP_LOGO (LOGO display)
SYS_MEM_CHECK (Conventional memory check)
(Boot)
EXT_MEM_CHECK (Check of exceptional cases in
protected mode) (Boot)
(LED=17H when check of exceptional cases in
protected mode occurs error)
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)
CHECK_SIO (Check of SIO) (SIO supporting model)
BOOT_PASSWORD (Password check)
(Waiting for the end of INIT_KBC division process)
2.4 System Board Troubleshooting
Message
PORTEGE S100 Maintenance Manual (960-508)