TM 9-4120-407-l4
4-7. LOGIC BOX ASSEMBLY TESTING AND REPLACEMENT. (Cont)
(g) Place S6 in the OFF position. Reset previous fault condition by turning the MODE switch to
OFF RESET position and then back to VENT position. Place S4 in the ON position for 2
seconds and then place S4 in the OFF position. The following routine shall occur:
1 LED 7 shall remain illuminated.
2 For the next 8 seconds: LED 4 illuminates. LED 7 remains illuminated.
3 For the next 2 seconds: LED's 4 and 7 turn off.
4 LED 7 illuminates for 2 seconds and then turns off for 2 seconds.
5 LED 7 shall illuminate. End of routine.
( h ) Place S5 in the ON position for 2 seconds and then place S5 in the OFF position. The
following routine shall occur.
1 LED 7 shall remain illuminated.
2 For the next 8 seconds: LED 5 illuminates. LED 7 remains illuminated.
3 For the next 2 seconds: LED's 5 and 7 turn off.
4 LED 7 illuminates for 2 seconds and then turns off for 2 seconds.
5 LED 7 shall illuminate. End of routine.
( i ) Place S6 in the ON position for 2 seconds and then place S6 in the OFF position. The
following routine shall occur.
1 LED 7 shall remain illuminated.
2 For the next 8 seconds: LED 6 illuminates. LED 7 remains illuminated.
3 For the next 2 seconds: LED's 6 and 7 turn off.
4 LED 7 illuminates for 2 seconds and then turns off for 2 seconds.
5 LED 7 shall illuminate. End of routine.
(j) Place S1 in the ON position for 2 seconds and then place S1 in the OFF position. LED 7 shall
turn off for 10 seconds and then illuminate.
(k) Place S1 in ON position. LED 7 shall turn off and in 10 seconds, LED 3 shall illuminate.
( l ) Place S1 in the OFF position and reset MODE switch by turning to OFF RESET. Turn MODE
switch back to VENT position. In 2 seconds, LED 7 illuminates.
(m) Place S7 in the OFF position; place S4, S5, and S6 in the ON position. Place S1 in the ON
position and in 2 seconds, place S7 in the ON position. LED 7 shall turn off and in 10 seconds,
LED 3 shall illuminate. S4, S5, and S6 have no effect.
(n) Place switches S1 thru S6 in the OFF position. Reset by turning MODE switch to OFF RESET
and then back to VENT. Place S7 in the OFF position; place S4, S5, and S6 in the ON position.
Place S7 in the ON position. In 1 second, place S1 in the ON position. LED's, 4,5, and 6 turn
off. After 10 seconds, LED 3 illuminates and LED 7 is off.
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