2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-30 [CONFIDENTIAL] PORTÉGÉ M500 Maintenance Manual (960-559)
Table 2-4 Debug port (Boot mode) error status (8/10)
D port status Inspection items Details
IRT_SYSMEM_CHK_END F115H
EXT_MEM_CHECK (Check of exception in the protected mode)(Boot)
IRT_EXTMEM_CHK_END F116H
Exception check in the protect ed
mode
INIT_SYS_MEM
Dport=F117h when error occurs
Initialization of conventional m emory (Reboot)
IRT_INI_SYSMEM_END
F118H
CHK_DMA_PAGE (Check of DMA Page Register) (Boot)
IRT_DMA_PAGE_END
F119H
CHECK_DMAC (Initialization of DMAC) (Boot)
IRT_CHK_DMAC_END
F11AH
INIT_DMAC (Initialization of DMA) (Boot)
IRT_INI_DMAC_END
F11BH
CHECK_PRT (Check of printer existence) (For models supporting
Printer port)
IRT_CHK_PRT_END
F11CH CHECK_SIO (Check of SIO) (model supporting SIO)
IRT_CHK_SIO_END
(Check of password)
Waiting for FDD initialization completion
(In the case of “Reboot”)
Waiting for HDD initialization completion
Check of key input during IRT (waiting for KBC
initialization completion)
Initialization of ATA priority
(In the case of “Boot”)
BM loading process (for models supporting
fingerprint authentication)
Initialization of BM (for models supporting
fingerprint authentication)
Check of key input during IRT (waiting for KBC
initialization completion)
Input of password
F11DH
BOOT_PASSWORD
BM releasing (for models supporting fingerprint
authentication)