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Parts Removal/Replacement
Humphrey Field Analyzer II - i
Confidential and Proprietary
Field Service Guide
3 - 44
52235C1105
3.34 Patient Support Horizontal (X-axis) Belt/Motor
Removal
NOTE -
The headrest drive belt drives the headrest horizontally in sync with the chinrest.
Anytime the headrest belt is off, if either the headrest or chinrest lead screw is rotated
independently, the headrest and chinrest will become misaligned.
P
Remove the front cover (3.2).
P
Pull the headrest drive belt (long belt) to move the chinrest horizontal lead screw
nut up against its limit nearest to the X-motor. (Since the chinrest and headrest
horizontal lead screws are linked by the belt, both lead screws will rotate when the
belt is pulled.)
Belt Removal:
1)
Remove the four screws securing the chinrest assembly to the front cover
assembly (Figure 3-9).
2)
Lift the chinrest assembly away from the front cover assembly and remove the belt
from the X-motor pulley.
3)
Maneuver the belt downward between the headrest pulley and the front cover
assembly until the belt is free.
Motor Removal:
1)
Remove the four screws securing the chinrest assembly to the front cover
assembly (Figure 3-9).
2)
Remove the chinrest assembly.
(continued)
FIGURE 3-9. Removing the Chinrest Assembly
Summary of Contents for humphrey HFA II-i series
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Page 424: ...Page 4 FA2i 013A PROPRIETARY and CONFIDENTIAL...
Page 502: ...FA2i 041 Page 3 Figure 2 Press rectangle in Top Left corner...
Page 516: ...Page 2 FA2i 046 Figure 1 Glass Film Wedge Detectors P N 67417 Note Spacing Washer Placement...
Page 517: ...FA2i 046 Page 3 Figure 2 Y Motor Turret Detector P N 67418 Note Spacing Washer Placement...