GE Corometrics 170 Series, Руководство по обслуживанию

Страница: 177 / 248

Revision C 170 Series Monitor 7-45
2000947-004
Serviceable Assemblies: Servicing the Recorder
Left/Right Alignment
1. Print the continuous recorder test pattern. (See “Printing a Continuous Test
Pattern” above.)
2. Check the quality of the printed lines. Verify that the horizontal lines print
evenly. Ideally the distance between the right paper guide at the roller and the
first line printed by the test pattern should be 0.490 in which represents a
nominal value. Use a vernier caliper to measure this distance.
3. Use the
Volume
buttons ( or ) to align the printhead left or right,
respectively. A number between 0 and 255 shows in the FHR display. The
number increases or decreased as you make adjustments using the
Volume
buttons.
IMPORTANT
ACCURACY—A common mistake in the field is to adjust the
printhead so that the first test pattern line prints at 0 mmHg on the
paper, rather than by measuring the nominal distance. This
method is often inaccurate as it does not account for paper
variations.
For best results:
‹
Use only GE paper.
‹
Ensure paper is correctly loaded as instructed on page 4-2.
‹
Use a vernier caliper to adjust the printhead to its nominal position.