Fig 6-50 DC Controller/Scanner Connector Location – 6-55 Fig 6-51 Input Paper Sensor Arm -6-56 Fig 7-1 Paper Path and Components – 7-4 Fig 7-2 DC Controller PCA Components – 7-5 Fig 7-3 Top Door/T’oner Cartridge Plunger Assembly – 7-9 Fig 7-4 Engine Test Button and Printout (LJet 4L/4ML) -7-36 Fig 7-5 Defeating the Top Door Plunger (LJet 4P/4MP) – 7-37 Fig 7-6 Defeating the Exit Sensor Flag (LaserJet 4P/4MP) – 7-38 Fig 7-7 Leading Edge Adjustment – 7-43 Fig 7-8 Beam -to-Dru]m Mirror Adjustment – 7-45 Fig 7-9 Repetitive Image Defect Ruler – 7-46 Fig 7-10 Main Wiring Diagram – 7-47 Fig 8-1 Assembly Locations – 8-7 Fig 8-2 Covers and Doors (LaserJet 4L/4ML) – 8-8 Fig 8-3 Covers and Doors (LaserJet 4P/4MP) – 8-10 Fig 8-4 Internal Components 1 – 8-12 Fig 8-5 Internal Components 2 – 8-14 Fig 8-6 Internal Components 3 – 8-16 Fig 8-7 DC Controller Assembly – 8-18 Fig 8-8 Gear Train Plate Assembly – 8-20 Fig 8-9 Paper Cassette (LaserJet 4L/4ML) – 8-21 Fig 8-10 Paper Cassette (LaserJet 4P/4MP) – 8-22 Fig 8-11 Pickup Assemb] y – 8-23 Fig 8-12 Fuser Assembly – 8-24 Fig 8-13 Keyboard Overlay (LaserJet 4P/4MP) – 8-26 Fig B-1 Parallel Cable Pin Assignments – B-2 Fig B-2 Serial Pin-outs DB-25 to DB-9 – B-3 Fig B-3 Serial Pin-outs DB-9 to DB-9 – B-3 Fig B-4 Connecting to END of a LocalTalk Network – B-4 Fig B-5 Connecting to MIDDLE of a LocalTalk Network – B-5 ii