HP Color LaserJet Enterprise CM4540 Service Manual - Page 653
Table 3-19, Causes and solutions for duplex repick jams continued
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Table 3-19 Causes and solutions for duplex repick jams (continued) Cause Solution The spring of the duplex re-pickup sensor lever is unhooked. Check the spring and place it in correct position. Poor contact of the duplex re-pickup sensor connector Reconnect the intermediate connector (J74) and connector (J145) on the DC controller PCA. The duplex re-pickup sensor (SR22) is defective. Run the manual sensor test to verify that the duplex re-pickup sensor (SR22) is functioning properly. See Manual sensor test on page 378 for information. If it is not, replace the right-door assembly. See Right-door assembly on page 145. Poor contact of the duplex reverse solenoid connector Reconnect the connector (J69) of the duplex reverse solenoid, connectors J202 and J201 on the high-voltage power supply (upper), and connector J113 on the DC controller PCA. The duplex reverse solenoid is defective. Replace the duplex-drive assembly. See Duplex-drive assembly on page 235. The duplex flapper is damaged or malfunctioning. Replace the delivery assembly. See Delivery assembly on page 231. Poor contact of the duplex reverse solenoid connector Reconnect the connector (J69) of the duplex reverse solenoid, connectors (J202) and (J201) on the high-voltage power supply (upper), and connector (J113) on the DC controller PCA. The duplex reverse solenoid is defective. Replace the duplex-drive assembly. See Duplex-drive assembly on page 235. The duplex flapper is damaged or malfunctioning. Replace the delivery assembly. See Delivery assembly on page 231. The duplex repick roller is worn or damaged. Replace the registration assembly. See Registration assembly on page 213. Poor contact of the duplex repick clutch connector. Reconnect the intermediate connector (J74) of the duplex repick clutch and connector (J145) on the DC controller PCA. The duplex repick clutch is defective. Run the solenoid drive test in actuator drive mode to verify that the duplex repick clutch is functioning properly. If it is not, replace the registration assembly. See Registration assembly on page 213. Table 3-20 Causes and solutions for residual media jams Cause Solution Poor contact of the loop-sensor connector and loop sensor 1 and 2. Reconnect the connectors of the loop 1 sensor (1 and 2): ● Loop 1 (J11, J352, J350, J50) and the DC controller (J139) ● Loop 2 (J10, J352, J350, J50) and the DC controller (J139) The loop sensor is defective. Run the manual sensor test. See Manual sensor test on page 378 for information. If the sensor is defective, replace fuser. See Fuser on page 112. The spring of the fuser-delivery-sensor lever is Check the spring of the fuser and right door and place it in the correct unhooked. position. The fuser-delivery sensor lever is damaged. Replace the sensor (SR5). Poor contact of the fuser-delivery sensor connector. Reconnect the connectors of the fuser-delivery sensor (J46), intermediate (J95) and the DC controller PCA (J123). ENWW Clear jams 601
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