POST (hex)

Debug Code Action

BIOS Program Definition

 

Possible Cause

 

 

Solution

 

Power on

None, blank

 

Nil

1.

CMOS jumper is set at pins 2-3.

 

1.

Set the CMOS jumper to pins 1-2

 

 

 

 

 

 

 

 

 

 

(default).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

5Vsb of PSU is insufficient.

 

2.

Replace a suitable PSU.

 

 

 

 

 

 

 

(Minimum required - 2A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

00

Power on -> Stopped at 00

BIOS program starts to set VID/FID

1.

Mixed-up BIOS data.

 

1.

Clear the CMOS data.

 

 

 

 

 

 

to initialize CPU. (Boot Block area).

 

 

 

 

 

 

 

 

 

 

 

 

2.

Defective CPU connection.

 

2.

Remove and reinstall the CPU.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Incompatible PSU.

 

3.

Replace a suitable PSU.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

No CPU power.

 

4.

Inspect the 12V connection.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.

Reset button short-circuited.

 

5.

Inspect the cable that connects the

 

 

 

 

 

 

 

 

 

 

reset button to the front panel

 

 

 

 

 

 

 

 

 

 

connector.

 

 

 

 

 

 

 

 

 

 

 

 

 

00

Power on

-

-

CPU VID is incorrect.

PSU does not comply with the

 

Replace a PSU that will provide

> 00

>

 

 

 

-

 

 

 

system’s requirement.

 

adequate power to the system.

 

 

Reset > Looping

 

 

 

A0

00 -> C1 -> Stopped at A0

A0~AF Definition: Initializing

1.

Incompatible memory modules.

 

1.

Remove and reinstall the memory

 

 

 

 

 

 

memory check code.

 

 

 

 

modules.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Mixed-up BIOS data.

 

2.

Clear the CMOS data.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b8

-

-

 

B0~BF Definition: Initializing

1.

Mixed-up BIOS data.

 

1.

Clear the CMOS data.

 

00 > C1

> Stopped at b8

 

 

 

 

 

 

memory/devices check code

 

 

 

 

 

 

 

 

 

 

 

 

2.

Incompatible memory modules.

 

2.

Remove and reinstall the memory

 

 

 

 

 

(registers).

 

 

 

 

 

 

 

 

 

 

 

modules.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Incompatible PCI devices.

 

3.

Remove and reconnect the PCI

 

 

 

 

 

 

 

 

 

 

devices.

 

 

 

 

 

 

 

 

 

 

 

C0

00 -> Stopped at C0

Initializing memory.

1.

Probing for failed memory devices.

 

1.

Make sure the memory modules are

 

 

 

 

 

 

 

 

 

 

installed properly in the slots.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

SPD value is lost or empty.

 

2.

Replace the memory modules.

 

 

 

 

 

 

 

General Debug LED POST and Troubleshooting

Appendix A

Debug LED POST and Troubleshooting

111

A

Page 111
Image 111
Genicom P45 user manual Appendix a, Debug LED Post and Troubleshooting