Tektronix Phaser 840, Service Manual

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vi Phaser 840 and 850 Color Printers
Media jams and the paper path 64
Media-based problems 64
Paper-pick errors 64
Print transfer jams 65
Checking the process motor and drive train 66
Media skews passing through the paper path 66
Printing and print quality problems 67
Not printing 67
Streaks or lines across the print 67
Missing ink or light colored ink band running length of print 68
Color is uneven 68
Streaks or lines down the print 69
Scratches parallel to the long axis of printing, particularly with film 70
Printing too light or too dark 70
White portion of print is colored 71
Fuzzy text 72
Variation of density on second side of print 72
Ghost of first side image on second side of print 72
Poor primary color fills 73
Ghosting 74
Poor small text resolution 74
Vertical line appear wavy 75
Oil streaks on print 75
Incomplete image transfer to paper 76
Ink smears on first side of duplex print 77
Repeating print defects on print 77
Banding parallel to long edge of print 78
Wrinkling 78
Image is offset or cut off 79
Oil streaks on top of print 79
Poor ink adhesion, poor image durability 79
Evaluating the printhead and cap/wipe/purge system 80
Troubleshooting following cap/wipe/purge installation 85
Macintosh printing problems 88
Image never prints 88
Image is rotated 90 degrees 88
Image prints in black-and-white 88
Printer isn’t in the Chooser 89
Windows printing problems 89
Image never prints 89