Samsung SCX-4521F Series - Page 79

Disassembly and Reassembly
Samsung Electronics
Service Manual
5-21
5.18 Engine Shield (LIU PBA, SMPS)
1. Before you remove the Engine Shield, 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 SMPS and LIU
PBA.
3. Remove the six screws securing the Engine Shield
and release the Harness, as shown below. Then
carefully release the Engine Shield from the
Actuator Feed Sensor Lever.
4. When if only remove the SMPS, first remove the
Rear Cover (refer to the 5.6) and unplug the Fuser
Connector and remove the six screws securing the
SMPS. Then unplug the Connector from the Main
PBA and carefully release the SMPS, as shown
below.
5. When if only remove the LIU PBA, first remove the
Rear Cover (refer to the 5.6) and remove the two
screws securing the LIU PBA. Then unplug the
Connector from the Main PBA and release the LIU
PBA as shown below.
Fuser
LIU Cable
SMPS Cable
Engine Shield
(W/LIU PBA, SMPS)
Actuator Feed Sensor Lever
SMPS
LIU PBA