HP LaserJet M9040/M9050 Service Manual - Page 371

11 Front door and print-cartridge area 12 Upper bin ADF jams ADF jams occur when media either does not reach or does not clear a sensor along the paper path in a specific amount of time. If a jam occurs in the scan engine, the product control panel shows an ADF paper jam error. Jams can occur most often when the following conditions exist: ● Paper trays are not loaded correctly. ● Media fails to meet specifications. ● Media is in poor condition. ● The product is not clean. Table 7-8 ADF jam troubleshooting Cause Solution Improper action of the document shutter. If the spring or arm for the document shutter is out of place, reset it. Defective shutter solenoid. Replace the shutter solenoid. Dirty, worn, or deformed weight solenoid. If the weight solenoid is worn or deformed, replace it. Dirty, worn, or deformed pickup roller. If the pickup roller is dirty, clean it water dampened lint-free cloth. If the pickup roller is worn or deformed, replace it. Dirty, worn, or deformed feed roller assembly. If the feed roller assembly is dirty, clean it water dampened lint-free cloth. If the feed roller assembly is worn or deformed, replace it. Dirty, worn, or deformed upper or lower registration roller assembly. If the registration roller assembly is dirty, clean it water dampened lintfree cloth. If the registration roller assembly is worn or deformed, replace it. Dirty, worn, or deformed upper or lower delivery rollers. If the delivery rollers are dirty, clean them water dampened lint-free cloth. If the delivery rollers are worn or deformed, replace them. Cause Multiple feed Dirty, worn, or deformed separation belts. Dirty, worn, or deformed feed roller assembly. Solution If the separation belts are dirty, clean them water dampened lint-free cloth. If the separation belts are worn or deformed, replace them. If the feed roller assembly is dirty, clean it water dampened lintfree cloth. ENWW Clear jams 353