HP Color LaserJet Enterprise CP4020 Service Manual - Page 433
Table 3-29, Causes and solutions for residual media jams
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Table 3-28 Causes and solutions for pickup delay and pickup stationary jams (continued) Cause Solution The paper-feeder pickup solenoid is defective. Run the solenoid drive test in the actuator drive mode to verify that the paperfeeder pickup solenoid is functioning properly. If it is not, replace the pickup assembly of the specific tray. See Pickup assembly (optional paper feeder) on page 226. Poor contact of paper-feeder pickup motor drive connector. Reconnect the connector (J409) on the paper feeder driver PCA and connector (J14). The paper-feeder pickup motor is defective. Run the pickup motor drive test in the actuator drive mode to verify that the paper-feeder pickup motor is functioning properly. If it is not, replace the pickup assembly of the specific tray. See Pickup assembly (optional paper feeder) on page 226. Multiple feed of media If the tray 3 pickup roller, separation roller, or feed roller is worn or deformed, replace any defective parts. See Feed and separation rollers (Trays 2-5) on page 86. The paper-feeder media-feed sensor lever is Check the sensor lever to make sure it is set correctly. If it is damaged, replace set incorrectly or damaged. the paper-feeder assembly. The spring of the paper-feeder media-feed sensor lever is unhooked. Check the spring and place it in correct position. Poor contact of the paper-feeder media-feed Reconnect the connector (J406) on the connector PCA and connector (J22) of sensor connector. the paper-feeder media feed sensor. A tray feed sensor is defective. Run the manual sensor test to verify that the tray feed sensor is functioning properly. See Manual sensor test 2 (special-mode test) on page 259 for information. If it is not, replace the pickup assembly of the specific tray. See Pickup assembly (optional paper feeder) on page 226. Table 3-29 Causes and solutions for residual media jams Cause Solution The sensor that detects residual paper jams is set incorrectly or damaged. Run the manual sensor test to verify which sensor detects the paper. See Manual sensor test 2 (special-mode test) on page 259 for information. Check the sensor lever to make sure it is set correctly. If it is damaged, replace the corresponding pickup assembly. See Pickup assembly (optional paper feeder) on page 226. The spring of the sensor lever that detects residual paper jams is unhooked. Run the manual sensor test to verify which sensor detects the paper. See Manual sensor test 2 (special-mode test) on page 259 for information. Check the spring of the sensor lever to make sure it is set correctly. Poor contact exists in the sensor that detects Run the manual sensor test to verify which sensor detects the paper. See residual paper jams. Manual sensor test 2 (special-mode test) on page 259 for information. Reconnect the following corresponding sensor connectors: ● Tray 3: Reconnect connectors (J408) and (J13) ● Tray 4: Reconnect connectors (J406) and (J22) ● Tray 5: Reconnect connectors (J403) and (J32) The sensor that detects residual paper jams is Run the sensor test in the sensor monitor mode to verify which sensor detects defective. the paper. Replace media feed sensor 1, 2 or 3. ENWW Clear paper jams 401