Samsung CLX-8540ND Service Manual page 143

Maintenance and Disassembly
4. Hold the Waste Full sensor harness (4 Pin on HVPS) and WTB Full sensor with hands. Carefully pull them
to the direction of arrow until you can see the joint connector.
Waste Full sensor Waste Full sensor
Waste Full sensor
(4pin on HVPS) (4pin on HVPS) Joint Connector Joint Connector
(4pin on HVPS) Joint Connector
WTB Full sensor WTB Full sensor
WTB Full sensor
5. Replace the WTB full sensor.
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Service Manual
Samsung Electronics