HP LaserJet 4 Service Manual - Page 439
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Page 439 highlights
high voltage contact assembly 6-68 contact plate 6-62 contactor removal 6-62 contactor/paper guide removal 6-62 High Voltage Power Supply assembly 7-51 checks 7-51 removal 6-21 troubleshooting 7-51 high voltage system 5-2 HP ASAP (Automated Support Access Program) 1-12 HP AUDIO TIPS 1-13 HP FIRST (Fax Information Retrieval Support Technology) 1-12 I I/O buffering 3-15 information 3-26 image defect summary 7-35 formation system 5-1, 5-16 formation troubleshooting 7-49 skew 7-35 image skew 7-43 improperly sized image 7-35, 7-44 INCOMPATIBLE ENVELOPE FEEDER 7-A INCOMPATIBLE TRAY 3 7-B indicators 3-2 information, related 1-7, B-8 infrared operation B-37 printing B-36 software B-34 status light B-36 test tool B-39 troubleshooting B-38, B-41 using to print B-36 infrared communication B-34 Infrared, test tool B-38 initial rotation period 5-38 INITIALIZING 7-B input area paper jams 7-20 input feed roller, PM 4-3 Input/Registration Sensor Check 7-22 INSTALL TONE CARTRIDGE 7-B INSTALL TRAY 2 7-B installation DC controller 6-35 installing printer drivers 3-41 SIMM 3-51 the control panel overlay 3-28 the envelope feeder 3-49 the optional lower cassette 3-44 the toner cartridge 4-7 the transfer roller 4-16 INSUFFICIENT MEMORY 7-B insufficient memory messages 7-10 interconnect PCA removal 6-69 interface troubleshooting 7-52 interfaces DOS commands, parallel 3-31 parallel DOS commands 3-31 IrDA, print using B-36 J J09, fan connector 7-34 J131 7-33 J211, main motor connector 7-33 J601 7-23 J602 7-23 J701 7-23 J702 location 5-5 paper control PCA 5-5 J704 location 5-5 paper control PCA 5-5 jam, detection, paper 5-11 job menu B-18 L label, laser safety 1-8 labels adhesive 2-5 arrangement 2-5 construction 2-5 curl 2-5 guidelines 2-5 language, changing the display 3-28 large print voids 7-35, 7-46 laser and scanner drive 5-2 laser safety CDRH 1-8 DHHS 1-8 Finland 1-10, B-9 label 1-8 laser/scanner assembly functional checks 7-32 LaserJet Explorer 3-33 last rotation period 5-42 LC LOAD message 7-13 leading edge registration adjustment 6-35 left side cover removal 6-7 life expectancy fuser assembly 4-2 rollers 4-2 separation pad 4-2 toner cartridge 4-2 LJ 5 Printer B-1 - B-42 Index-3