Brother International HL-2400C Service Manual - Page 238

4.6 Rear of the Printer 4.6.1 Rear Access Cover (L) / Transfer Unit 1) Open the rear access cover. 2) Remove the upper screw of the retaining strap supporting the transfer unit to the printer body. 3) Remove the set screw ST3X6 (1 pc.) from the left hand side transfer unit metal retaining plate. 4) Remove the metal retaining plate. 5) Remove the support shaft from the installation hole at the right hand side while lifting the unit slightly. Metal retaining plate Retaining strap 
Support shaft Fig.7-67 6) Remove the transfer unit with the rear access cover. 7) Remove the set screws ST3X8 (4 pcs.) from the transfer unit. 8) Remove the transfer unit from the rear access cover. Rear Access Cover(L) Transfer Unit Fig.7-68 Note: When reassembling the transfer unit, install the support shaft into the right hand hole first. VII-40