MX-M753N MX-EBX3 13 – 2
3) Disconnect the power plug of the main unit from the power out-
let.
B. Pull out the control PWB
• If cables are connected to the control PWB unit, remove all
cables.
1) Remove the three screws from the right cabinet upper.
2) Remove the right cabinet upper.
3) Remove the four screws from the control PWB unit.
• If the fax box unit is installed, carry out steps 4), 5), and 6)
additionally.
4) Pull out the control PWB unit and remove the snap band.
5) Remove the interface cable from the frame.
6) Remove the connector.
7) Pull out and remove the control PWB unit.
C. Installation of the scanner function expansion
PWB
1) Remove four screws for fixing the scanner function expansion
PWB from the control PWB.
2) Install the scanner function expansion PWB to the control
PWB by using the four screws for fixing the scanner function
expansion PWB.
NOTE: Check that the connectors for connecting each PWB are
properly connected.
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