MAINTENANCE
Honeywell !’&ii!!!#h.
Over-temperature protection is provided by internal thermistors. Should
a DU’S internal temperature increase to a preset level, the raster
generator will be shut
off until the temperature drops back below this
trip point.
Should the
DU’S internal temperature continue to increase
after the raster generator
has been shut off, an even higher temperature
trip point will shut down the low voltage power supply (LVPS). At the
same time a discrete is provided to the FWC, allowing an overtemp message
to be displayed. The LVPS will remain off until the temperature drops
sufficiently below the higher trip point.
22-14-00
Page 150
Aug 15/91
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