Welch Allyn CP 150 Service Manual page 28

24 Service menu
Printer pattern test
1. Touch the Print button to print a test page.
2. Use the specifications in the Print verification checklist table and the Printer pattern
test and check point graphic to verify the correct operation of the device printer by
comparing the pattern printed on the test page.
Print verification checklist
Point Description
Point A
Verify the distance of the arc on the circle from the top edge of the paper is
11 mm +/- 3 mm
Point B
Verify the distance of the arc on the circle from the left edge of the paper is
50 mm +/- 5 mm
Point C Verify that the line is straight and without breaks from top to bottom
Point D
Verify that the thick black line is uniform in blackness without breaks from
top to bottom
Point E Verify the print is readable
Point F Verify line is straight and measures 100 mm +/ -5 mm
CP 150 12-lead resting electrocardiograph