Brother International HL-2400C Service Manual - Page 230

4.3.8 Paper Size Sensor (PSU) Note: If the optional lower tray unit is fitted, remove the left hand screw of the front cross rail to release the media cassette guide. 1) Remove the media cassette. 2) Remove the set screws ST3X6 (1 pc.) from the media cassette guide (L) assembly. 3) Pull the media cassette guide toward you while pushing the front catch to release the guide from the plastic catches (4 pcs.). 4) Remove the paper size sensor connector. 5) Remove the media cassette guide (L) assembly from the frame. 6) Remove the set screws BT3X8 (2 pcs.) holding the paper size sensor to the cassette guide (L). 7) Remove the paper size sensor. Catch Front catch Media cassette guide (L) Paper Size Sensor Fig.7-52 Note: When assembling the media cassette guide, be sure to correctly locate the front catch and other 4 catches. 4.3.9 Toner Sensor (TTR) 1) Remove the set screws ST3X6 (3 pcs.) from the toner sensor PCB. 2) Disconnect and remove the toner sensor PCB. Fig.7-53 VII-32 Toner Sensor (TTR)