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Table of Contents

• Preface
  • Author and Copyright
  • DISCLAIMER

• Introduction
  • SAFETY

• Printer and Photocopier Technology
  • Dot matrix printer operation
  • Daisy wheel printer operation
  • Ink-jet printer operation
    • A primer on priming
    • A bit of ink-jet history?
    • Inkjet types (at least from a Xerox perspective)
    • Response times of resistance heater elements in ink jet printers
    • How many colors can an ink-jet printer can produce?
    • Why are red, blue, and yellow inkjet primaries?
    • About inkjet printer ink
  • Laser printer and photocopier operation
    • Laser printer operation summary
    • Cleaning and Handling of Photosensitive Drums
    • Book on laser printer maintenance and rapair
    • Discussion on laser diodes in laser printers
    • Types of toner
    • So you put in the wrong type of toner?

• Dot Matrix and Daisy-Wheel Printers
  • So you took your printer apart....
  • Print head repair
  • Ribbon does not advance after replacing flex-cable
  • Print head stepper
  • Motor driver blows fuses
  • Ribbon on electronic typewriter does not advance
  • Apple Imagewriter II squeal
  • Compaq Pagemarq 15 printer service mode
  • Epson FX-286e printer problems
  • Paper debris clogging Epson LQ-570
  • IBM X-24 Proprinter print head jumps around
  • NEC P5200 Printer problem
  • OKI Microline 391 Elite Problem/Error
  • Star SD15 printer self-test problem

• Ink-Jet Printers
  • HP DeskJet problems
  • Types of HP ink-jet technology printers
  • Dissertation on HP DeskJet repair
  • HP ThinkJet printer repair 1
  • HP ThinkJet printer repair 2
  • HP DeskJet paper feed problems
  • Cartridges drying out on early HP DeskJets
  • HP DJ340 shuts off during printing
  • HP DeskJet 520 - Crunch!
  • HP DeskJet 560C Detailed problem description and possible solutions
  • Cartridge detection on HP DeskJets
  • HP Deskwriter 660 printer problems
  • Little plastic parts in HP DeskJet printers and HP service policies
  • HP DeskJet 560C - stripping gear sounds and more
  • HP600C DeskJet produces too much black ink
  • HP DJ power supplies/wall adapters
  • HP 600 series DeskJet printer smears even with new cartridge
  • HP DeskJet 692C - Random lockups
  • HP 820Cxi DeskJet Problems
  • HP DeskJet 1200C power supply repair story
  • HP PaintJet problems
  • Unclogging non-HP inkjet printers
  • Intermittent light/no print from Canon BJ330
  • Canon BubbleJet information
  • Canon BubbleJet printers not printing after cleaning
  • Canon BJC 600 problems
  • BJC 600 print head error - lights flashing
  • Epson Stylus Color IIS error light problems
  • Cleaning Epson inkjet print heads
  • Cleaning totally clogged colour head in Epson Stylus Color 500
  • Epson Stylus 800 print quality
  • Epson Stylus Color 800 printer seems to operate but no printing
  • Epson Stylus Color 800 clogged print head
  • Non-use and refill of BJC-620 ink cartridges
  • Inkjet Printer Cartridge Type and Reliability
  • Ink cartridge expiration dates
  • Dead Cannon, Compaq, HP, and similar power supplies

• Laser Printers
  • On-line laser printer resources
  • Warnings about vacuuming laser printer toner
  • Refilling toner cartridges
  • Cleaning laser printer optical path
  • Laser printer drum damaged by extended exposure to light?
  • Repeating images on laser printer
  • Black evenly spaced lines on laser printer or copier
  • Optics disassembly?
  • HP LaserJet FAQ
  • Guide to disassembly and reassembly of HP LaserJet II and III
  • Guide to disassembly and reassembly of HP LaserJet 4
  • Testing the erase lamps on an HP LaserJets
  • HP LaserJet error code 51
  • HP LaserJet I fuser swapping and other tidbits
  • HP LJ Series II bad bearing noise and other comments
  • HP LaserJet II just dies and no sign of power after a short while
  • HP LaserJet II with dark bands on first page
  • HP LaserJet II output jam
  • HP LaserJet IIp won't go past 'warm up'
  • Totally blank printout on laser printer or copier
  • Bearing replacement on HP LaserJet II to fix error code 41
  • HP LaserJet series II - error code 50 Service and clicking
  • Notes on HP LaserJet II error code 50
  • HP LaserJet II - Top of the line printing shifting in multipage printing
  • HP LaserJet II bad bearing sounds
  • HP LaserJet II fuser overheating
  • HP LaserJet II triac replacement
  • HP LaserJet Series II intermittent
  • HP LaserJet IIP printer error code 12
  • HP LaserJet IIP with 12 Open or no EP error
  • HP LaserJet IID Error 13
  • HP LaserJet IIP and LaserJet series 2 error code 52
  • HP LaserJet II scanner information
  • HP LaserJet IIP error code 51
  • HP IID error code 50
  • HP LaserJet IIP+ error code 50
  • HP LaserJet IIP - 52 error
  • HP Laserjet IIP error 52 - chip replacement
  • Laserjet IIP PS board
  • HP LaserJet III problems
  • Smudged vertical line on HP Laserjet III
  • Shifted print on HP LaserJet III
  • HP LaserJet III powers on but appears dead
  • HP LaserJet III cold fuser
  • HP LaserJet III paper jam
  • HP LaserJet III paper feed problem
  • HP LaserJet III error 50
  • Notes on HP LaserJet III error code 50
  • Paper jams on HP LaserJet IIIP
  • HP LaserJet IIIP power up problems
  • HP LaserJet IIIP - error code 52
  • HPLaser Jet IIIsi - 'User Maintenance' message?
  • HP LaserJet 4 - intermittent error code 50
  • HP LaserJet 5L grabbing more than one sheet of paper
  • HP LaserJet 5 SIMM codes
  • HP LaserJet random behavior - no ground
  • Determining if HP LaserJet partial print problems are scanning or logic
  • LaserJet IIID and others: paper not picked up correctly
  • Laserwriter LS
  • Apple technical information
  • Apple Lserwriter I/O
  • Apple LaserWriter and LaserWriter Plus paper jams
  • Apple LaserWriter prints double/repeated images
  • Apple LaserWriter IIg runaway scanner never stops
  • Apple Laserwriter IINT error codes
  • Apple Laserwriter IINT 'clicks' with intermittent fuser error
  • Diagnosing a blank vertical strip problem on Apple Laserwriter IINT
  • Upgrading Apple LaserWriter to LaserWriter Plus
  • Toner All Over Paper on Various Brother Laser Printers
  • Resetting "REPL.DRUM" error on Sharp JX-9460
  • TI MicroLaser Plus laser printer reports 'Main Motor Err'
  • Fuser problem/printer parts
  • Swapping fuser parts
  • Panasonic KX-P4410 CHNG DRUM error code 027
  • Panasonic 4420 laser printer error code E31 and other comments
  • Copy counter fuses
  • Laser Printer info
  • Strange running time meter/copy counter
  • Laser Printer prints heavy on one line about 2 inches from bottom
  • Image tilted/skewed/crooked on old IBM laser printer
  • Fuser Roller collects toner on laser printer
  • HP original laser printer 2686A: bargain or boat anchor?
  • Okidata printer that's streaking
  • First page smudges on OKI OL400
  • Resetting 'Replace Drum' message on OKI OL400
  • Laser printer test equipment
  • Frank's repair notes: HP-IIP, HP-IIIP, Apple Personal Laser Writer
  • Tony's entry into laser printer repair
  • Repairing plastic paper feed strip in Canon PC10, etc. or CX laserprinters

• Photocopiers
  • Warnings about vacuuming copier toner
  • Comments on copy problems
  • General image quality problems - Clean the optics first!!
  • Diagnosing 'blank copy' problems
  • Copies too dark 1
  • Copies too dark 2
  • Copies too light
  • Previous copy doesn't erase from drum
  • Copy quality degrades with use
  • Copier error codes
  • Canon PC25 copier problems
  • The mysteries of developer
  • Problems with Ricoh copier
  • Toner sensors?
  • Comments on copier cleanliness
  • Gray tinge on Xerox 5260 Copier
  • Streaky copies
  • Toshiba parts
  • Canon PC20 cold fuser
  • Broken Sharp Copier
  • Resetting Sharp Z-25 copy count
  • Sharp SF-71 copier will not reset
  • Sharp SF-7100 copier drum replacement

• General Problems
  • Panasonic 1124 power supply problem
  • Cannon LBP-8 A1 Printer 40 and 22 errors

• Fax Machines and Scanners
  • Fax/scanner striping
  • Brother Fax machine feed problems and cleaning
  • Brother IntelliFax 950M transmits black messy lines
  • Hewlet Packard LaserJet FAX (HP C1740A)
  • Paper sense problems with Brother Fax

• Miscellaneous Problems and Procedures
  • Cleaning the fuser roller
  • Streaks on laser printer output
  • HP plotter communications problems
  • Okidata FAX machine - Printer Alarm 4

• Unresolved Problems
  • Packard Bell laser printer - strange bug

• Service Information
  • Printer, copier, and fax Web sites
  • USENET newsgroups
  • Copier forums
  • HP LaserJet parts
  • Laser printer cartridge rebuild info
  • Printer parts
  • HP DeskJet Parts
  • LaserJet II: Where is the fuse?
  • LaserJet III: Where is the fuse?
  • Copier and laser printer manuals
  • Canon information
  • Epson printer switch settings
  • Hewlett Packard information
  • Printer schematics?
  • References