2.4 System Board Troubleshooting

2 Troubleshooting Procedures

Table 2-6 Printer port LED resume mode error status (1/4)

LED Status

Test item

Contents

 

 

 

00h

Refer to IRT printer LED error status.

 

 

 

 

01h

Refer to IRT printer LED error status.

 

 

 

 

02h

Refer to IRT printer LED error status.

 

 

 

 

03h

Refer to IRT printer LED error status.

 

 

 

 

 

Clears flag for SMI control.

 

 

 

 

27h(not used)

Renewal of Resume counter

 

 

 

 

26h

Checks the WakeUp factors.

 

 

 

 

 

Rewriting of SMRAM BASE

 

 

 

 

28h

Initializing devices necessary for

Initializing of PIT

initialization before initializing PCI bus

 

 

 

 

Initializing of PIT channel 0 (Sets the interval of

 

 

timer interruption to 55ms)

 

 

Initializing of PIT channel 2 (Sets the sound

 

 

generator frequency to 664Hz)

 

 

Measuring CPU clock

 

 

 

 

 

Check of parameter block A

 

 

 

 

 

Permission of SMI other than auto-off function

 

 

 

 

 

Control of excess of rated input power

 

 

 

 

 

Control of battery discharging current (1CmA)

 

 

 

 

 

AC adapter rated over current control

 

 

 

 

 

Dividing for measuring of IRT time

 

 

 

 

 

Setting to clock generator

 

 

 

 

 

Initializing of CPU

 

 

Updating micro-code

 

 

Judgment of CPU type

 

 

Check of supporting Geyserville

 

 

Sets the CPU clock to High

 

 

 

 

Recovery of PIC register

 

 

 

 

 

Initialization of devices necessary for

Setting of IDE device operation mode

 

initialization before initializing PCI bus 2

 

 

 

 

Setting of AC’97/Azalia operation mode

 

 

 

 

 

Initializing of temperature control information

 

 

 

 

 

Initializing of KBC

 

 

 

 

 

VGA display-off and Reset control

 

 

 

 

 

Control of built-in LAN permission/ prohibition

 

 

 

TECRA S3 Maintenance Manual (960-532)

[CONFIDENTIAL]

2-33

Page 75
Image 75
Toshiba S4 manual Control of built-in LAN permission/ prohibition