Samsung SCX-4521F Series - Main PBA

Samsung Electronics
Service Manual
Disassembly and Reassembly
5-16
5.15 Main PBA
1. Before you remove the Main PBA, you should
remove:
- Scan Ass'y (Refer to the 5.9)
- Middle Cover (Refer to the 5.13)
2. Unplug the all Connectors from the Main PBA, as
shown below.
3. Remove the six screws securing the Main PBA and
remove it.
SMPS/HVPS
Main Motor
LSU
Clutch
LIU
DEVE
Thermister
Main PBA