TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
15. LHS DOES NOT OPERATE PROPERLY IN AUTO MODE (CAB ONLY)
(continued).
VOLTAGE TEST
(1) Loosen four screws and remove cover
from main frame junction box.
NOTE
MAIN FRAME
JUNCTION BOX
Leave hook arm in the up position
until advised otherwise.
(2) Turn engine start switch to ON
position.
(3) Turn light control switch to STOP
LIGHT position.
(4) Set multimeter to voltage position.
(5) Place positive (+) probe of multimeter
on main frame junction box terminal
strip, position 4.
(6) Place negative (-) probe of multimeter
on known good ground and check
multimeter for voltage reading.
(7) Turn engine start switch and light
TERMINAL STRIP,
control switch to OFF position.
POSITION 4
4-329
