Appendix C: Beep and POST Codes

 

 

 

Appendix

Beep and POST Codes

C

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 D6-IN 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 interpreted 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.

D6-IN System Board Manual

51

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Star Micronics D6-IN Appendix C Beep and Post Codes, Following pages, More beeps, Duration of the beep tone, Routines

D6-IN specifications

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