Tektronix PHASER 380, Service Manual

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xii Phaser 380 Color Printer
9 Checks and Adjustments
Required tools summary 9-1
Front panel menu 9-2
Bypass mode 9-4
Cool down mode 9-4
Printing test prints 9-5
Printing service test prints 9-5
Printing the configuration page 9-5
Adjustments 9-6
Process motor belt tension adjustment 9-6
Y-axis belts tension adjustment 9-8
Cap/wipe/purge assembly adjustments 9-10
Setting the cap/wipe/purge unit parallel to the printhead 9-10
Tensioning the cap/wipe/purge drive belts 9-12
Paper-pick adjustment 9-13
X-axis rails-to-drum parallelism adjustment 9-14
Printhead-to-drum spacing adjustment 9-16
Transfix roller pressure spring adjustment 9-18
Drum position encoder gap 9-20
Printhead transit restraint adjustment 9-22
Vacuum check 9-24
Adjusting the image position (margins) 9-26
Adjusting scale and skip factors 9-28
Adjusting the scale factor 9-30
Adjusting the horizontal image interleave (skip) 9-32
Adjusting the vertical interleave (scan shift) 9-34
NVRAM 9-36
Resetting Print Engine NVRAM 9-36
Viewing NVRAM contents 9-37
Resetting PostScript NVRAM 9-37
A FRU Replaceable Parts List
B Test Patterns
C Wiring Diagrams