HP LaserJet 4 Service Manual - Page 442
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PS5 check 7-44 MP tray trailing edge sensor 5-7 PS6, lower cassette paper-out sensor 5-7 PS7, envelope feeder paper-out sensor 5-7 R RAM size 3-24 Random Horizontal Black Lines 7-40 READY 7-B rear door removal 6-8 recycling program Toner Cartridge 4-7 registration adjustment 6-35 leading edge adjustment 6-35 related documentation 1-7, B-8 removal font door cover 6-10 formatter pca 6-29 gear assembly 6-38 left side cover 6-7 MP tray separation 4-11 PC tray pickup roller 4-13 top cover 6-5 transfer roller 4-16 REMOVE DUPLEX JAM 7-B REMOVE PAPER JAM 7-C removing and replacing the transfer roller 4-15 lower cassette roller 4-14 MP tray separation pad 4-11 MP tray, paper pickup rollers 4-11 PC tray pickup roller 4-13 the SIMMs cover 6-25 transfer roller 4-16 removing the covers 6-4 repackaging instructions 3-43 repetitive defect template 7-67 repetitive defects 7-35, 7-41 replacing fuser parts 6-47 MP tray separation pad 4-11 paper pickup rollers 4-11 the feed guide assembly 6-68 the high voltage contact assembly 6-68 the transfer roller 4-16 REQUESTED LANGUAGE NOT AVAIL 7-C requirements for infrared B-35 requirements, site 2-1 Reset Menu 3-5 reset, cold 3-23 resets menu B-23 RESETTING ACTIVE I/O 7-C RESETTING ALL I/O 7-C Resolution Enhancement (REt) 3-16 Resolution Enhancement technology status 3-26 Resource Saving 3-14 status 3-26 RESTORING FACTORY SETTINGS 7-C returning the printer 3-43 RFI statement 1-9 right hand text missing 7-35, 7-40 right side cover removal 6-4 robust xon 3-34 rollers life expectancy 4-2 MP tray 4-11 paper pickup 4-11 rs-422A 3-39 rs232C 3-33 S safety Finland laser 1-10, B-9 label, Laser 1-8 laser, CDRH 1-8 laser, DHHS 1-8 ozone 1-11 toner 1-11 scanner assembly removal 6-43 scanner malfunction 7-32 scanner motor 5-10 signals 5-10 security, networks 3-18 self test description 3-24, B-32 sensitivity, drum 5-17 sensor pca removal 6-60 separation pad 6-1 life expectancy 4-2 MP tray 4-11 sequence of operation, basic 5-33 serial cable pinouts 3-35 communication 3-31 configuration 3-33 DOS commands 7-53 serial data communication 5-4 flow 5-4 input (SLI) 5-2 output (SLO) 5-2, 5-4 repackaging instructions 3-43 repetitive defect template 7-67 repetitive defects 7-35, 7-41 replacing fuser parts 6-47 serial menu B-22 serial number 1-3, B-5 Index-6