Zeiss humphrey HFA II-i series Field Service Manual page 84

Parts Removal/Replacement
Replacement Notes:
Check/adjust the horizontal (X-axis) edge detector on the turret before reinstalling
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the projection assembly into the instrument.
Adjust the belt as necessary (see Section 4).
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When the three turret screws have been tightened, secure each one with a small
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dab of Loctite® No. 222 (see Appendix A for part number).
When reassembled, manually rotate the turret to check for smooth movement
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throughout its normal range.
Follow-up Checks/Adjustments:
Clean the optics. See Table 3-1.
Field Service Guide
Humphrey Field Analyzer II - i
Confidential and Proprietary
3 - 38 52235C1105