HP 4600 Service Manual - Page 356
Jams in the top cover, Jams in the duplex path (HP CLJ 4600 and 4650 models only)
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Jams in the top cover The following table describes the causes of and solutions for jams in the top cover. Table 7-12 Causes for jams in the top cover Cause Solution The fuser paper sensor or sensor lever is defective. Make sure that the fuser paper sensor lever moves smoothly and is set in place. Replace the lever if it is damaged. Replace the sensor if it is defective. The fuser sleeve or pressure roller does not rotate smoothly. If the fuser drive gears are worn or damaged, replace the fuser. The fuser inlet guide is dirty or is covered with toner. Clean the fuser inlet guide. The fuser sleeve or pressure roller is dirty, worn, or damaged. Clean the fuser sleeve or pressure roller. If it is damaged, replace the fuser. The fuser delivery sensor or sensor lever is defective. Make sure that the fuser delivery sensor lever moves smoothly and is set in place. Replace the lever if it is damaged. Replace the sensor if it is defective. The fuser delivery roller is worn. The fuser delivery roller drive gears are worn or damaged. The face-down delivery roller is defective. DC controller PCA is defective. Replace the fuser. Replace the fuser. Replace the fuser. Replace the DC controller PCA. Calibrate the printer after replacing the DC controller. See Calibrate Now (HP Color LaserJet 4600 models) or Full Calibrate Now (HP Color LaserJet 4610n and 4650 models). Jams in the duplex path (HP CLJ 4600 and 4650 models only) The following table describes the causes of and solution for jams in the duplex path. Table 7-13 Causes for jams in the duplex path Cause The oblique rollers are worn or damaged. The oblique roller drive gears are worn or damaged. The duplex feed guide is damaged. Solution Replace the oblique rollers. Replace the ETB unit. Calibrate the printer after replacing the DC controller. See Calibrate Now (HP Color LaserJet 4600 models) or Full Calibrate Now (HP Color LaserJet 4610n and 4650 models). Replace the ETB unit. Calibrate the printer after replacing the DC controller. See Calibrate Now (HP Color LaserJet 4600 models) or Full Calibrate Now (HP Color LaserJet 4610n and 4650 models). 340 Chapter 7 Troubleshooting ENWW