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PRESYS
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Instruments
4 - Maintenance
4.1 - Indicator Hardware
The Indicator maintenance requires the user to have access to the hardware
of the instrument. The Indicator hardware consists of three main boards: Display
Board, CPU Board and Power Supply Board. The three-board-system is fixed to the
aluminum case by a screw on the right side of the front-panel. Loosen this screw and
pull the Indicator front-panel in order to remove the instrument from case.
The Display Board is located in the Indicator front-panel. The front-panel has
four internal staples in its four corners which keep together CPU and Power Supply
Boards. The CPU and Power Supply Board are fixed by a spacer.
i) Remove the screw which fixes the spacer placed near the edge of the CPU and
Power Supply Boards.
ii) Turn the Indicator so that the display is on the opposite side for reading.
iii) Displace carefully the holder at the right top corner of the front-panel so that the
Power Supply Board can be loosen.
iv) Move the Power Supply Board to the right and open the boards according to
Figure 21.
DMY-2011, DMY-2035 and DMY-2036
Figure 21 - Indicator hardware
Maintenance
Page 31
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