Table - Toshiba Tecra M5 Maintenance Manual

2.4 System Board Troubleshooting
Table 2-5 Printer port LED boot mode status (7/9)
LED Status
0Fh INIT_SYSTEM
10h INIT_DISPLAY
11h Calling VGA BIOS
13h DISP_LOGO
14h SYS_MEM_CHECK
15h EXT_MEM_CHECK
16h INIT_SYS_MEM
18h CHK_DMA_PAGE
19h CHECK_DMAC
1Ah INIT_DMAC
1Bh CHECK_PRT
1Ch CHECK_SIO
Process of DIAGNOSTIC
1Dh
inspection result display
1Eh BOOT_PASSWORD
(In the case of "Reboot")
TECRA M5 Maintenance Manual (960-542)
Test item
(Initialization of system)
Storing of CMOS error information to
IRT_ERR_STS_BUF
Controlling CD POWER SW (model supporting CD
play)
Timer initialization start
EC initialization & Reading of battery information
Update of system BIOS (Update EDID information for
LCD)
(Waiting for VGA chip initialization completion, VGA
BIOS initialization)
Waiting for VGA power-on
Waiting for Display access completion
(Logo displaying) (Start
LED=25H (unused))
(Check of conventional memory) (Boot)
(Exception check in protected mode) (Boot)
(Initialization of conventional memory) (Reboot)
(LED=17h if error occurred during exception check in
protected mode)
(Check of DMA Page Register) (Boot)
(Check of DMAC) (Boot)
(Initialization of DMAC) (Boot)
(Check of printer existence) (For models supporting
Printer port)
(Check of SIO) (model supporting SIO)
(When DIAGNOSTIC mode is permitted)
(Check of password)
Waiting for FDD initialization completion (For models
supporting built-in FDD)
Waiting for HDD initialization completion
Check of key input during IRT (waiting for KBC
initialization completion)
I/O LOCK Processing (model supporting I/O LOCK)
Initialization of ATA priority
2 Troubleshooting Procedures
Contents
ing of logo display waiting
[CONFIDENTIAL] 2-27