DFI Blood-Iron P43-T34, User Manual

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A
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Debug LED POST and Troubleshooting
Appendix A - Debug LED Post and Troubleshooting
POST
(hex)
Power on
00 00
A0
b8
C0
Debug
Code
Action
None, blank Power on
-> Stopped at
00
Power on
->
00
-
>
Reset
->
Looping
00
-> C1
-> Stopped at
A0
00
-> C1
-> Stopped at
b8
00
-> Stopped at
C0
BIOS Pr
ogram De
fi nition
Nil BIOS program starts to set
VID/FID
to initialize CPU. (Boot Block area). CPU
VID is incorrect.
A0~AF De
fi
nition: Initializing memory
check code. B0~BF De
fi
nition: Initializing memory/
devices check code (registers). Initializing memory
.
Possible
Cause
1.
CMOS jumper is set at pins 2-3.
2.
5Vsb of PSU is insuf
fi cient.
(Minimum required - 2A)
1.
Mixed-up BIOS data.
2.
Defective CPU connection.
3. Incompatible
PSU.
4.
No CPU power
.
5.
Reset button short-circuited.
PSU does not comply with the system’
s requirement.
1.
Incompatible memory modules.
2.
Mixed-up BIOS data.
1.
Mixed-up BIOS data.
2.
Incompatible memory modules.
3.
Incompatible PCI devices.
1.
Probing for failed memory devices.
2.
SPD value is lost or empty
.
Solution 1.
Set the CMOS jumper to pins 1-2 (default).
2.
Replace a suitable PSU.
1.
Clear the CMOS data.
2.
Remove and reinstall the CPU.
3.
Replace a suitable PSU.
4.
Inspect the 12V
connection.
5.
Inspect the cable that connects the reset button to the front panel con- nector
.
Replace a PSU that will provide adequate power to the system. 1.
Remove and reinstall the memory modules.
2.
Clear the CMOS data.
1.
Clear the CMOS data.
2.
Remove and reinstall the memory modules.
3.
Remove and reconnect the PCI devices.
1.
Make sure the memory modules are installed properly in the slots.
2.
Replace the memory modules.
General Debug LED POST and Troubleshooting