MX-3050N, MX-3060N, MX-3070N, MX-3550N, MX-3560N, MX-3570N, MX-4050N, MX-4060N, MX-4070N (serv.man183). CCE 1578 MOUNTING EARTH HARNESS ON FUSING REAR PAPER GUIDE UNIT (L4-11 Error Code) - Sharp Copying Equipment Technical Bulletin (repair manual). Page 3

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 Connection of the ground wire to Fusing rear PG UN
 [Step 1]  Remove "Right cabinet rear upper".  (Unscrew the screws indicated with 
<x6>)
 [Step 2] Remove FAX PWB together with the plate. (Unscrew the screws indicated with 
<x 3>.  Remove the connectors indicated with
<x2>)
[Step 3] Open the right door, and remove Fusing unit.  (Unscrew the screws indicated with 
<x2>)
 Remove Fusing rear PG UN.  (Unscrew the screw indicated with
 ○
 <x1>)
Remove Fusing rear PG UN.
Fusing rear PG UN
Fusing UN
Disconnect the connector.
Right door
Right cabinet 
rear upper
FAX PWB
 [Step 4] Connect the ground wire to Fusing rear PG UN removed at Step 3.
[Step 5] Pass the ground wire to the rear side of the machine, and then mount Fusing rear PG UN.
Connect the 
connector.
Disconnect the connector.
When mounting the unit, pass 
the ground wire from the area 
indicated with the red circle to 
the rear side of the machine.
Use this boss as the rotation stop of 
the terminal.
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