How to Disable the ECM on a Brother Fax 4100E

Written by louis cappozzoli
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Error correction mode (ECM) is a transmission protocol on fax machines and fax modems. It is primarily found on newer models. This feature can cause problems occasionally because the other machine that is sending or receiving the fax through ECM transmission must also have ECM enabled to work properly. The ECM option on the Brother 4100E fax machine can be turned off through the control panel, but this can be done only in service mode.

Skill level:


  1. 1

    Press the "Menu" button on the 4100E control panel.

  2. 2

    Use the keypad on the control panel to key in the following, which puts the fax machine into maintenance mode: *2864

  3. 3

    Enter "10" on the control panel keypad, which puts you in the firmware menu.

  4. 4

    Enter "22" on the control panel keypad to access the WSW22 menu.

  5. 5

    Press "1" on the control panel keypad and then press "1" again to turn off ECM when sending faxes. Press "9" to go back to the WSW22 menu.

  6. 6

    Press "2" on the control panel keypad. Then, press "1" to turn off ECM when receiving faxes. Press "99" to save and exit maintenance mode.

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