HP 4600 Service Manual - Page 355
Jams in the paper path
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Table 7-10 Causes for jams in tray 3 or tray 3/tray 4 (2 x 500-sheet paper feeder, ) (continued) Cause Solution The paper pickup assembly is defective. Replace the paper pickup assembly. The DC controller PCA is defective. 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 paper path The following table describes the cause of and solution for jams in the paper path. Table 7-11 Causes for jams in the paper path Cause Solution The registration shutter is defective. Make sure that the shutter is clean and moves smoothly, and that the spring is in place. If the shutter is damaged, (This applies to jams that occur before the registration roller.) replace the paper pickup assembly. The drive gears are damaged. (This applies to jams that occur in advance of the registration roller.) Check the drive gears in the paper pickup unit. Replace the pickup drive assembly if the gears are damaged. The registration roller and registration sub roller are dirty, worn, or damaged. (This applies to jams that occur in advance of the registration roller.) Clean the registration roller or registration sub-roller if it is dirty. If it is still dirty after cleaning, or if it is worn or damaged, replace the paper pickup assembly. The attaching roller is damaged. (This applies to jams in which media is crumpled into an accordion when it enters the ETB.) Check the attaching roller to see if it is damaged. If it is damaged, replace the ETB. Calibrate the printer after replacing the ETB. See Calibrate Now (HP Color LaserJet 4600 models) or Full Calibrate Now (HP Color LaserJet 4610n and 4650 models). The cartridge shutter open/close mechanism is damaged. (This applies to jams in which media is crumpled into an accordion fold somewhere on the ETB belt.) The shutters in each print cartridge should open as you close the ETB. If a shutter does not open, replace that print cartridge. Also check for a damaged shutter mechanism in the printer. The cartridge drive motor assembly is damaged. The attaching roller is defective. Inspect the cartridge drive assembly in each print cartridge. If any are damaged, replace the assembly for that print cartridge. Make sure that the attaching roller is clean and the spring is in place. If the roller is damaged, replace the ETB. Calibrate the printer after replacing the ETB. See Calibrate Now (HP Color LaserJet 4600 models) or Full Calibrate Now (HP Color LaserJet 4610n and 4650 models). The paper leading edge sensor is defective. The DC controller PCA is defective. Replace the pickup PCA. 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). ENWW Paper-path troubleshooting 339