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
CAUTION
CAB CONTROL BOX
CONNECTOR (P2)
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 electrical sys-
tem.
(1) Disconnect main junction box
connector (P4) from junction box.
(2) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an open
circuit.
(3) Connect multimeter to leads at each
end of wire, and check multimeter for
continuity. Check (24-pin) linking
harness, position F.
NOTE
Any reading besides infinity indicates
a grounded wire.
(4) Remove multimeter lead from one end of
wire and connect to chassis ground.
MAIN JUNCTION BOX
CONNECTOR (P4)
Change 1
4-2
4-283
