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 - 5
Field Service Guide
(3.1 General Instructions - continued)
P
Some of the motor pulleys are installed with the collar outward, and some with
the collar inward (next to the motor body). Be sure to make note of the correct
position of the collar before removing the pulley.
P
When reinstalling motor pulleys, ensure that there is proper clearance between the
pulley and motor body. When reinstalling the belt, ensure that the motor belt
teeth are properly meshed with both pulleys.
P
The appearance and condition of the bowl's inner surface are critical to the
functionality of the
HFA II - i ; work carefully to avoid damaging or dirtying the
bowl. Do not touch the inside of the bowl unnecessarily.
P
In this service guide, the terms left, right, front and back of the instrument are as
viewed from the patient position, unless noted otherwise.
P
Whenever you will be working on the projection assembly with it installed in the
instrument, place a sheet of paper or clean cloth under the projection assembly to
catch any small hardware that you may drop.
P
Some of the cable connectors in the instrument may not be keyed. To facilitate
later reassembly of the instrument, consider labeling each connector during
disassembly.
P
Proper cable and wire routing is important. Before disassembly, observe the
cable routing and locations of the cable ties; then be sure to route the cables
exactly the same during reassembly. Be sure to replace all cable ties removed
during disassembly.
P
Be sure to reconnect all ground wires disconnected during disassembly.
Failure
to do so can cause the instrument to malfunction.
P
Certain screws on the projection assembly secure critical alignment of the optical
path.
It is essential that you NOT LOOSEN these screws (see Figure 3-1)
.
Alignment of the projection assembly can only be done at the factory using special
equipment.
P
After replacement of parts or an assembly, perform a limited operational check of
the associated functions before complete reassembly of the instrument. After
complete reassembly, perform the full System Checkout (Section 2).