Operations Manual: HPAC-100/125/150/200/250-RM SSPA
6-1
6 Maintenance Information
Introduction
This section contains information on standard maintenance practices and contacting
the factory.
Maintenance
Although no regularly scheduled maintenance is required, certain items should be
routinely checked. Ensure that the amplifier is operated within the specified tem-
perature range and that the fans and fan screens are free from obstructions. It is
imperative that the amplifier receives proper cooling. It is also recommended that all
cables and connections be routinely checked for mechanical as well as electrical
integrity.
Cover Removal
To access the interior of the HPAC-100/125/150/200/250-RM for user adjustments,
the top or bottom covers will have to be removed. Each cover is held in place by
eight 1/4 turn Phillips head screws. Turning the screws counter-clockwise loosens
them.
Caution: when tightening, the screw requires only a 1/4 turn before it
locks into place. Do not force the screw any further or damage will occur.
LCD Contrast
The contrast of the LCD can be changed by adjusting a potentiometer located on
the front panel board. When the top cover of the HPAC-100/125/150/200/250-RM is
removed, this board can be found mounted to the backside of the front panel. Figure
6-1 shows a top view of this board.
Figure 6-1: View of the front panel circuit card.
I/O Card Fuses
The fuses on the I/O card, 3AG 3A 250V, are only used when the HPAC-100/125/
150/200/250-RM controls an external switch. They are not needed otherwise. Refer
to the specific appendix if the external switch or redundant option is ordered.
Summary of Contents for HPAC-100-RM
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