Zeiss humphrey HFA II-i series, Field Service Manual

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Humphrey Field Analyzer II - i Adjustment / Calibration
Confidential and Proprietary
52235C1105 4 - 15
Field Service Guide
FIGURE 4-5. Aperture Wheel
5) Make a penciled cross on a small piece of self-adhesive note paper and stick it into the
bowl such that the penciled cross is in the center of the III spot.
6) Select
aperture I
; position the spot on the penciled cross using the STEP icons (UP
= left, DOWN = right); then select STORE .
7) Repeat step 6 with all the other apertures. (II,IV,V)
4.8.2.4 Color
Purpose
This procedure is designed to ensure that all holes in the color wheel are properly centered
relative to the light path.
Procedure
1) If the rear cover is on the instrument, remove the projection lamp access cover.
2) From the Mechanical Calibration menu, select
COLOR
, and note that the Clear 1 color
wheel filter is initially selected.
3) Observe the position of the hole in the color wheel in relation to the spot of light
striking the wheel.