HP Color LaserJet Enterprise CM4540 Service Manual - Page 654
Jams in Tray 1, Tray 2 and internal paper path, Table 3-20
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Table 3-20 Causes and solutions for residual media jams (continued) Cause Solution The fuser-delivery sensor is defective. Run the manual sensor test to make sure the fuser-delivery sensor is functioning properly. See Manual sensor test on page 378 for information. If the sensor is defective, replace the fuser. See Fuser on page 112. The spring of the duplex repickup sensor lever Check the spring and place it in the correct position. The sensor is located in is unhooked. the right door behind the cover close to the engine side. The duplex pickup sensor lever is damaged. Replace the right door assembly. See Right-door assembly on page 145. Poor contact of the duplexing media-reversesensor connector Reconnect the connectors of the duplexing media-reverse sensor (J8) and (J90) and the duplexing driver PCA (J107). The duplex repickup sensor (SR22) is defective. Run the manual sensor test to verify that the duplex repickup sensor is functioning properly. See Manual sensor test on page 378 for information. If the sensor is defective, replace the duplex repickup sensor. NOTE: Even if jammed paper is visible in Tray 1, clear the jam from the inside of the product by opening the right door. Jams in Tray 1, Tray 2 and internal paper path Table 3-21 Causes and solutions for pickup delay jam 1: tray pickup Cause Solution The tray 1 pick up roller or the tray 1 separation pad is worn or deformed. Replace the tray 1 pickup roller and separation pad. See Pickup roller (Tray 1) on page 114. Replace the right door. See Right-door assembly on page 145. Poor contact of the tray 1 media-presencesensor connector Reconnect the connectors of the tray media-feed sensor (J7), intermediate (J85), and DC controller (J107). Poor contact of the TOP sensor connector. Reconnect the intermediate connector (J74) of the TOP sensor and connector (J145) on the DC controller PCA. The TOP sensor is defective. Run the manual sensor test to verify that the TOP sensor is functioning properly. If not, replace the registration assembly. See Registration assembly on page 213. Poor contact of the MP-pickup-solenoid drive connector Reconnect the connector of the tray pickup solenoid (J52) and the DC controller PCA (J148). The MP-pickup solenoid is defective. Execute the tray-pickup-solenoid driving test in the actuator-drive mode. If the solenoid is defective, replace the right door assembly. See Right-door assembly on page 145. Poor contact of the pickup-motor drive connector (M13) Reconnect the connector (J37) and connector (J260) on the DC controller PCA. The pickup motor is defective. Execute the pickup-motor driving test in the actuator-drive mode. If the motor is defective, replace the pickup motor. See Pickup motor on page 259. 602 Chapter 3 Solve problems ENWW
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