Raytheon 138-119 Operator's And Service Manual page 48

6.5 Power Supply 1 fails
Both Power Supplies are "cross" connected at both Distribution Units.
If the Power Supply 1 (connected at the Distribution Unit 1) fails, the Distribution Unit 1 is
supplied by the Power Supply 2 (connected at the Distribution Unit 2).
In a GG--R system the Change over Box, both Operator Units and both Distribution Units
are supplied by the Power Supply 2.
In a GGM--R system the Change over Box, both Operator Units, both Distribution Units and
both Magnetic Sondes are supplied by the Power Supply 2.
6.6 Power Supply 2 fails
Both Power Supplies are "cross" connected at both Distribution Units.
If the Power Supply 2 (connected at the Distribution Unit 2) fails, the Distribution Unit 2 is
supplied by the Power Supply 1 (connected at the Distribution Unit 1).
In a GG--R system the Change over Box, both Operator Units and both Distribution Units
are supplied by the Power Supply 1.
In a GGM--R system the Change over Box, both Operator Units, both Distribution Units and
both Magnetic Sondes are supplied by the Power Supply 1.
Edition: April 06, 2005
Change Over Box
138- -119
Gyro 1 is no longer supplied with operating voltage
(see also section 6.1 "Gyro 1 fails").
Gyro 2 is no longer supplied with operating voltage
(see also section 6.2 "Gyro 2 fails").
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