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12. Remove the nut just above the power supply. The power supply may now be twisted
free of the attaching stud and lifted from its cradle. Remove the power supply
carefully to avoid damage due to wire interferences.
13. Maneuver the new power supply into the cradle, ensuring that the wires are free to
be connected.
Reverse this procedure to install a new power supply.
4.4.13 Factory settings for jumpers and switches
The following table shows the factory settings for the jumpers and switches that are
located on the various circuit boards that are located in the electrical enclosure.
Legend
Not set. Jumper shunt is installed on one pin only.
Set. Jumper shunt is installed on both pins.
Set. This jumper has three pins and the jumper shunt is installed on pins 2 and
3.
The dark areas (█) indicate the position of the switch actuators.
Preamp board factory jumper settingFigure 4-24:
Operation and maintenance
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