TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
14. MAIN FRAME DOES NOT UNLOAD IN MANUAL MODE (MODEL A ONLY)
(continued).
CONTINUITY TEST
(1) Open hydraulic cabinet cover.
(2) Loosen four screws on main junction
box cover and open cover.
(3) Remove main junction box connector
(P4) from main junction box.
CAUTION
Electrical power must be shut off
from circuit before continuity can
be checked. Failure to comply
with this caution may result in
damage to test equipment or elec-
WIRING REMOVED FOR CLARITY
trical system.
(4) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an open
circuit.
(5) Connect multimeter to terminals at
each end of wire, and check
multimeter for continuity. Check
between main junction box connector
(J4), position F, and terminal strip,
position 19. Also check between
main junction box connector (J4),
MAIN JUNCTION BOX
CONNECTOR (J4)
position Q, and terminal strip,
position 20.
MAIN JUNCTION BOX
CONNECTOR (P4)
Change 1
4-2
4-291
