HP Color LaserJet Professional CP5220 Service Manual - Page 232
Control-panel message, Status alert, Description, Recommended action, 4 Fuser Error, Turn off then
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Control-panel message 50.4 Fuser Error Turn off then on Status alert 50.7 Fuser Error Turn off then on 50.8 Fuser Error Turn off then on 220 Chapter 3 Solve problems Description Recommended action Fuser drive circuit is defective. 1. Check the power source at the product location. NOTE: If the product does not meet the power requirement of 43 to 57Hz frequency, the fuser temperature control does not work correctly and this causes malfunction. 2. Reconnect the connector (J21) on the DC controller PCA. 3. Replace the low-voltage power supply unit. The fuser is defective (pressure 1. Reconnect the connector release mechanism (J181) on the DC controller abnormality). PCA. 2. Run the sensor test in the sensor monitor mode to verify that the fuser pressure release sensor is functioning correctly. If it is not, replace the fuser pressure release sensor unit. 3. Check the fuser pressure release sensor flag. If it is damaged, replace the fuser. 4. Run the fuser pressure release drive test in the actuator drive mode to verify that the fuser motor is functioning correctly. If it is not, replace the fuser motor. 5. Replace the fuser. Abnormally low subthermistor fuser temperature error. 1. Remove the fuser and remove any residual media in the fuser. 2. Reinstall the fuser. Check the connector (J704) between the fuser and the product. If it is damaged, replace the fuser drive unit or fuser. 3. Reconnect the connector (J131A) on the DC controller PCA and the connectors (J109, J110) on the power line between the low-voltage power supply unit and fuser. 4. Replace the fuser. ENWW