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190-00067-25 Rev D 5-7
8. With the MSG annunciator OFF, verify the DMM voltage is greater than 4.5 VDC.
9. Rotate the inner function knob to turn the MSG annunciator ON. Verify the DMM voltage is less
than 0.3 VDC.
10. Measure voltage across J1-12 and J1-22.
11. Rotate the outer function knob clockwise to select the ARRVL annunciator test.
12. With the ARRVL annunciator OFF, verify the DMM voltage is greater than 4.5 VDC.
13. Rotate the inner function knob to turn the ARRVL annunciator ON. Verify the DMM voltage is
less than 0.3 VDC.
14. Measure voltage across J1-28 and J1-22.
15. Rotate the outer function knob clockwise to select the APPR annunciator test.
16. With the Appr annunciator off, verify the DMM voltage is greater than 4.5 VDC.
17. Rotate the inner function knob to turn the Appr annunciator to ACTV. Measuring across J1-13 and
J1-22, verify the DMM voltage is less than 0.3 VDC.
18. Rotate the inner function knob to turn the Appr annunciator arm. Verify the DMM voltage is greater
than 4.5 VDC.
19. Measure voltage across J1-9 and J1-22.
20. Verify the DMM voltage is less than 0.3 VDC.
21. Rotate the inner function knob to turn the Appr annunciator to off. Verify the DMM voltage is
greater than 4.5 VDC.
22. Rotate the inner knob to select ‘appr actv’. Verify the DMM voltage is greater than 4.5 VDC.
External Switches Test
Figure 5-5. External Switches Test Page