Samsung SCX-4521F Series Service Manual page 80

Disassembly and Reassembly
5.19 LSU
1. Before you remove the LSU, you should remove:
- Scan Ass'y (Refer to the 5.9)
- Middle Cover (Refer to the 5.13)
2. Remove the three screws securing the LSU and
remove it. Then unplug the two Connectors from
the LSU.
Service Manual
5-22
LSU
Samsung Electronics