HP LaserJet 4 Service Manual - Page 107
Periodic Maintenance Procedures
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Periodic Maintenance Procedures Each paper source has a Paper Pickup Roller that should be replaced when paper no longer feeds reliably. The MP Tray (Tray 1) Paper Pickup Roller is shown in Figure 4-5. The PC tray (Tray 2) Pickup Roller is shown in Figure 4-7, the LC (Tray 3) Pickup Roller is shown in Figure 4-8. Removing the MP Tray (Tray 1) Pickup Roller and Separation Pad Figure 4-5 Removing the MP Tray (Tray 1) Pickup Roller To remove and replace the MP (Tray 1) Pickup Roller and Separation Pad, follow the steps below. 1 Turn OFF and unplug the printer. 2 Remove the MP Tray (Tray 1) inner black plastic cover. 3 Remove the roller by pinching the plastic retaining clip at the side of the roller and sliding it off its shaft (see Figure 4-5). (You may find it easiest to pinch the clip with your right hand and use your left index finger to slide the roller to the right.) Preventive Maintenance 4-11