2.1Control Knobs and Switches on Main Unit

2.1.7System Power Distribution Board

Figure 2.1-7 shows an external view of the system distribution board located in the back of the main unit.

MAIN ELB

FFB1 STAGE

FFB2 DISPLAY

Fig. 2.1-7 System Power Distribution Board

• MAIN ELB:

Main breaker. At starting turn it ON. Turn it OFF for a complete shutdown.

•FFB1 STAGE: Breaker for the power for the Type II stage control unit. This breaker, which is not required for a Type I stage, should normally be turned OFF.

•FFB2 DISPLAY: Breaker for the display power supply unit. Normally this remains ON.

Turn it OFF for a complete shutdown.

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