Tektronix PHASER 380, Service Manual

Page: 295 / 346

Service Manual 9-15
Checks and Adjustments
9
12. Fine Adjustment. Move the x-axis carriage to the far right position.
13. Attach and lock the X-axis rails alignment tool to the left extreme end
of the X-axis rails (position 1). Check and zero the reading.
14. Attach and lock the X-axis rails alignment tool to the right extreme
end of the X-axis rails (position 2). Check the reading.
15. Using the roll adjuster on the right side of the X-axis, set the x-axis
drive/drum parallelism so the difference between the left and right
alignment readings is less than 0.003 inches.
16. Carefully remove the alignment tool.
17. Reassemble the printer and make a test print. Perform the calibration
adjustments “Adjusting the image position (margins)” on page 9-26,
“Adjusting scale and skip factors” on page 9-28 and “Adjusting the
vertical interleave (scan shift)” on page 9-34.
Figure 9-8 Setting x-axis rail-to-drum parallelism
Alignment
tool at right
end of drum
Parts omitted
for clarity
Access hole
in frame
Alignment
marks
Head roll
adjust nut
Mounting
bolts (or nuts)
9661-109
Head angle
adjust nut
(Never
change)
Lock
screw
access
hole
Plastic
plug
Position 2
Position 1