Zeiss humphrey HFA II-i series, Руководство по обслуживанию на месте

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Humphrey Field Analyzer II - i Parts Removal/Replacement
Confidential and Proprietary
52235C1105 3 - 37
Field Service Guide
3.27 Horizontal (X-axis) Turret Motor Belt Removal
1) Remove the projection assembly and install it on the projection mount tool (3.17).
NOTE - Before lifting the projection assembly out of the instrument, ensure that your
projection mount tool is set up to match the diameter of the carriage rails (3/8") on the
projection assembly.
2) Carefully slide the X-axis turret motor belt off the large gear at the top of the
turret.
FIGURE 3-7. Turret Removal
3) From the top side of the assembly, locate the hole in the casting that provides
access to the top edge of the turret. Through this hole, one by one, remove the
three screws that hold the turret in place (Figure 3-7).
(As the screws are removed, the X-axis edge detector flag on the turret becomes
loose. Check that the loosened flag does not hit the edge detector and block
rotation of the turret for access to the third screw.)
4) Carefully pull the turret out of its top bearing.
NOTE - Be careful to prevent dust or debris from reaching the internal optics of the
turret while the turret is open.
5) Remove the turret motor belt.