Micronics PCI/ISA System Board D6-IN Manual de usuario descargar pdf (Pagina 63)

M6DPi System Board Manual

Beep and POST Codes

Beep codes are a series of beeps sent through the speaker

which indicate a problem during the Power On Self Test

(POST). If text appears on the video screen, the M6DPi

has completed POST; any other tone from the speaker

indicates something other than a POST error. These

tones are not described in the tables on the following

pages.

The beep error codes are a series of beeps. The duration

of the beep tones are constant, but the length of the

pauses between the beeps varies. For example: a 1-3-3

beep code will sound like one beep, a pause; three beeps

consecutively, another pause and then three more beeps.

One beep code is often misunderstood. If a video card is

not installed or is failing, the system board will generate

a long-short-long-short beep code. This is often inter-

preted as a 1-2-1 beep code. But POST errors always

vary in the length of the pause and not the duration of

the beep tone.

Another way of identifying a POST error is to use a

device called a POST card. This peripheral card is

inserted into one of the ISA slots and has an LED (or

LCD) read out showing the contents of port 80h.

The following tables list all beep codes and POST

routines.

Appendix C: Beep and Post Codes

Appendix

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Micronics PCI/ISA System Board D6-IN Manual de usuario Pagina 63