Tektronix Phaser 340 Service Manual page 218

8
Field Replaceable Unit Disassembly/Assembly
8-40 Phaser 340 Color Printer
1. Reinstallation. If not already in place, install the printhead's data
ribbon cable to the printhead. Secure the ribbon cable in place the
cable retainer clip.
2.
Using the printhead removal tool, reverse the removal steps to
reinstall the printhead.
3. Rotate the printhead to its print position and ensure that the tilt cam
gear is engaged with the tilt cam solenoid.
4. At one end of the printhead, slide the printhead gap tool between the
printhead and the drum. Align the outside edge of the tool with the
inside surface of the printer side-frame. The flat side of the gap tool,
marked HEAD, faces the printhead.
Hold the gap tool so its 4 COLD 5 mark, (which represents a
0.030 inch gap between the printhead and the drum) is level with the
notch in the printer side-frame. Adjust the printhead's spacing
adjustment screws to hold the gap tool snugly but still allow it to be
easily removed. This sets the "cold" printhead-to-drum gap.
5.
Torque the mounting screws to 20 in/lbs.
6. Plug the other end of the printhead's data ribbon cable to the power
control board. Inspect both ends of the data ribbon cable to ensure
they are properly seated.
7. Refer to the Chapter 9 topic "Printhead-to-drum spacing adjustment"
on page 9-11 to set the correct gap between the "hot" printhead and
the drum.