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Thread: Front audio jack module not disabling rear audio




  1. #1

    Default Front audio jack module not disabling rear audio

    I just finished building my system using a Gigabyte EP45-DS3L mobo and Raidmax Sagittarus case.

    Everything is working fine with the exception of the front/rear audio jack.

    The motherboard is using Realtek HD Audio and the front audio jack module appears to be a AC'97 module. According to the Gigabyte manual, i need to disable "front audio jack detection" in order to use the AC'97 module. When i disable this, the front audio jack is working but it does not stop the speakers (rear audio jack) from continuing to work.

    Any ideas?

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Front audio jack module not disabling rear audio

    Check over both the case and board pinouts for the wires, even though it is working soundwise in the front the pins may be connected wrong and could cause this issue for you.

  3. #3

    Default Re: Front audio jack module not disabling rear audio

    The manual that came with the case is worthless, and the pinout diagram on there doesnt really match the connector.

    The case connector i think is:

    1) MIC 2
    2) AGND
    3) MIC PWR
    4) MANUAL SAYS +5VA, BUT ACTUALLY NO PIN HERE
    5) LINE OUT_R
    6) BLINE_OUT_R
    7) NO PIN
    8) NO PIN
    9) LINE OUT_L
    10) BLINE_OUT_L

    The motherboard has two pinout configurations, one for HD and one for AC'97

    HD:
    1) MIC2_L
    2) GND
    3) MIC2_R
    4) -ACZ_DET
    5) LINE2_R
    6) GND
    7) FAUDIO_JD
    8) NO PIN
    9) LINE2_L
    10) GND

    AC'97:
    1) MIC
    2) GND
    3) MIC PWR
    4) NC
    5) LINE OUT_R
    6) NC
    7) NC
    8) NO PIN
    9) LINE OUT_L
    10) NC

    So i assume my case connector should match the AC'97 pin outs as above. I can see the differences, but i'm not that familiar with this and don't know what needs to be changed. It seems the only real differences are for BLINE OUT, what does this pin do?
    Last edited by shortskoolbus; 10-16-2008 at 03:16 AM.

  4. #4

    Default Re: Front audio jack module not disabling rear audio

    Found this on the internet:

    BLINE_OUT_R,
    BLINE_OUT_L - These signals drive the rear audio (Lime) connector.
    The jumpers on these pins, when FPAUDIO is not being used,
    allow the sound chip to drive the rear audio out. When
    the jumpers are removed, there is no path to the audio on
    the back of the case. A case equipped with an "Intel" audio
    solution will have return_signals, so that when the
    microphone is unplugged, the audio will again be on the
    Lime colored connector on the back of the case.

    I guess i just need to remove those jumpers.

  5. #5

    Default Re: Front audio jack module not disabling rear audio

    I removed the jumpers, yet still same issue.

    Any other ideas? According to the manuals, pin outs appear to match.

  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Front audio jack module not disabling rear audio

    Hmm, yeah I am not sure. I wish I could be of more help, but Do not know anymore then I have suggested. And yes it does appear that they do match up aside from the Bline pins.

    And sounds to me like they do need to be connected, as what you found disables the rear audio when a Mic is connected. Which is what you are trying to do, so you may need to connect Bline out l and r to 6 and 10 respectively. But That seems to be the default anyway so again I am not sure.

    Did you test it how you have it now, with both front and back connections?

    You may want to see if you can connect it to the case per HD Connections as well, instead of AC'97

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