HP Color LaserJet Enterprise CM4540 Service Manual - Page 656
Table 3-23, Causes and solutions for pickup delay and pickup stationary jams continued
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Table 3-23 Causes and solutions for pickup delay and pickup stationary jams (continued) Cause Solution Poor contact of a paper-feeder pickup solenoid drive connector (1, 2, or 3) ● Tray 3: Reconnect connectors (J408) and (J18) ● Tray 4: Reconnect connectors (J406) and (J20) ● Tray 5: Reconnect connectors (J403) and (J30) 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 313. 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 313. 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 113. The paper-feeder media-feed sensor lever is set incorrectly or damaged. Check the sensor lever to make sure it is set correctly. If it is damaged, replace 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 sensor connector. Reconnect the connector (J406) on the connector PCA and connector (J22) of 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 Tray/Bin manual sensor test on page 393 for information. If it is not, replace the pickup assembly of the specific tray. See Pickup assembly (optional paper feeder) on page 313. Table 3-24 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 Tray/ Bin manual sensor test on page 393 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 313. 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 Tray/ Bin manual sensor test on page 393 for information. Check the spring of the sensor lever to make sure it is set correctly. 604 Chapter 3 Solve problems ENWW
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