2.4 System Board Troubleshooting

2 Troubleshooting Procedures

Table 2-3 Printer port LED boot mode status (2/6)

LED Status

Test item

Message

 

 

 

 

 

CMOS battery level check

 

 

 

 

 

CMOS checksum

 

 

 

 

 

CMOS data initialization (1)

 

 

 

 

 

Set IRT status

 

 

 

 

 

DRAM size storing in CMOS

 

 

 

04h

Resume branch

Resume branch check

 

 

 

 

 

SM-RAM checksum

 

 

 

 

 

SMI control flag clear

 

 

 

 

 

System BIOS RAM area checksum

 

 

 

 

 

Wake Up check

 

 

 

 

 

SMRAM base rewrite

 

 

 

 

 

PnP RAM checksum

 

 

 

 

 

PIT test and initialization

 

 

 

06h

Grant SMI

Enabling SMI except for auto-off function

 

 

 

 

 

Set clock generator

 

 

 

 

 

ACPI register initialization

 

 

 

 

 

Initialization of temperature control information

 

 

 

 

 

EC debug

 

 

 

 

 

Piano debug

 

 

 

 

 

443BX device 1 initialization

 

 

 

 

 

PIC register initialization

 

 

 

07h

Resume process

Resume process to resume main

 

 

 

 

 

Resume error process

 

 

 

 

System BIOS ROM/RAM

440BX debug

 

copy

 

 

AGP bridge initialization

 

 

 

 

 

 

 

System BIOS ROM to RAM copy

 

 

 

05h

SMRAM initialization

SMRAM initialization

 

 

 

 

 

Wake Up check

 

 

 

 

 

SMRAM base rewrite and BIOS CPU state map

 

 

store

 

 

 

 

 

Set SMI handler to runtime

 

 

 

 

 

PIT test and initialization

 

 

 

06h

CPU clock measure

CPU clock measure

 

 

 

Satellite Pro M10 Series Maintenance Manual (960-431)

2-23

Page 69
Image 69
Toshiba M10 manual Cmos battery level check