3.3.1.1   Key Interlock Procedure. -  To open the left or right bay inner door, procede as follows.  See fig 3-2 for the locations of controls and indicators on power distribution panel A13.
 

1.     Place transmitter in maintenance mode and turn off high voltage by following the procedure in paragraph 3.4.1.2.

2.     On power distribution panel A13, set HIGH VOLTAGE POWER ON/OFF circuit breaker CB1 and AUXILIARY POWER ON/OFF circuit breaker CB2 to OFF.

3.     Lock HIGH POWER ON/OFF circuit breaker CB1 off by turning cuircuit breaker interlock key clockwise.

4.     Remove key from circuit breaker lock.

5.     Use key to unlock left or right bay inner door, as applicable.