TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
15. LHS DOES NOT OPERATE PROPERLY IN AUTO MODE (CAB ONLY)
(continued).
CONTINUITY TEST
(1) Start engine.
(2) Turn light control switch to STOP
LIGHT position.
NOTE
LED should be on when main frame is
fully retracted, off when main frame is
extended.
(3) Fully retract main frame and shut off
engine.
(4) Turn engine start switch to ON
position and observe status of LED.
(5) Turn engine start switch and light
control switch to OFF position.
MAINFRAME
DOWN PROXIMITY
SWITCH LED
4-335
