Brother HL-4200CN Service Manual page 180

4) Releasing the hooks at 2 positions, and then remove the guide harness SW.
5) Remove the screw, and then release the ground wire.
6) Disconnect the connector on the guide harness SW.
7) Remove the switch part of the guide harness SW.
8) Releasing the hooks at 2 positions, and then remove the inlet part of the guide
harness SW.
9) Remove the guide harness SW.
Guide harness SW
10) Remove 3 screws securing the LVPS STD to the printer.
11) Remove the LVPS STD from the printer.
Fig.4-111
LVPS
Screw, M3x6
Fig.4-112
- IV-62 -
Inlet part
Guide harness SW
Ground wire
Connector
Switch part
Screw, M3x6
Screw, M3x10