HP LaserJet 4 Service Manual - Page 441
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paper feed assembly removal 6-18 paper feed guide removal 6-62 paper feed system 5-1, 5-26 paper jam 7-20 detection 5-11 PS1 7-20 troubleshooting 7-20 paper motion 5-2 paper path MP tray 5-29 PC tray 5-30 paper pickup motor 5-10 paper pickup rollers 4-11 paper sensors 7-20 paper size sensing, lower cassette 7-16 paper specifications 2-3 paper tray switch settings 5-9 paper, loading optional lower cassette 3-45 parallel communication 3-31 DOS commands 7-53 parallel menu 3-33, B-22 parts list 8-40 PC LOAD Message 7-13 PC pick-up roller clutch solenoid (SL1) 5-5 PC rollers, PM 4-3 PC tray paper path 5-30 pickup roller removal 4-13 PC tray size switches (SW603, SW604, SW605) functional check 7-15 PCL fonts menu B-17 PCL memory requirements 3-26 period initial rotation 5-38 last rotation 5-42 print 5-40 standby 5-37 warm-up 5-37 periodic maintenance procedures 4-11 phone numbers CIC (Customer Information Centers) 1-13 CSC (Customer Support Center) 1-13 MSDS 1-11 printer drivers 3-41 technical assistance 1-12 photosensitive drum 5-17 photosensors signals 5-5 - 5-6 tray and door 5-5 - 5-6 pickup motor (m2) functional test 7-23 pickup motor, lower cassette 7-24 pickup rollers 6-1 PLEASE WAIT 7-B port infrared B-35 PostScript 3-58 postscript menu B-18 power supply removal 6-15 power system 5-1, 5-31 POWERSAVE ON 7-B pre-troubleshooting procedures 7-1 preliminary operating checks 7-1 print darkness 3-17 print density 7-38 adjusting 3-17 adjustment 4-5 dial 3-17 print media specifications 2-3 print period 5-40 printer security 3-18 serial number 1-3, B-5 specifications 1-5, B-6 printer drivers 1-13, 3-41 obtaining 3-41 Printer Job Language (PJL) overview 5-15 printer message troubleshooting 7-2 printer open failure 7-18 PRINTING CONFIG PAGE 7-B PRINTING DEMO PAGE 7-B printing envelopes 2-6 PRINTING FLASH PAGE 7-B PRINTING FONT LIST 7-B printing menu 3-24, B-15 printout, test print 3-29 process, fusing 5-25 PROCESSING JOB 7-B product compatibility 1-2, B-2 - B-3 programming flash SIMM B-29 protecting the SIMM board 3-51 protocol infrared B-34 PS 5, MP tray trailing edge sensor 7-44 PS1 and PS2 sensor assembly removal 6-61 input/registration sensor 5-7 paper jam 7-20 PS2 functional check 7-17 paper jam 7-20 PC tray paper-out sensor 5-6 PS3 (exit sensor) check 7-23 paper exit sensor 5-7 PS3 removal 6-42 PS4 check 7-17 Index-5