TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
13. MAIN FRAME DOES NOT LOAD IN MANUAL MODE (MODEL A ONLY)
(continued).
VOLTAGE TEST
(1) Remove four screws and lockwashers and
access cover from heater compartment.
(2) Remove cab control box
connector (P2) from cab control box.
(3) Turn engine start switch to ON position.
(4) Turn light control switch to STOP LIGHT
position.
(5) Set multimeter to voltage position.
(6) Place positive (+) probe of multimeter on
cab control box connector (J2), position H.
(7) Place negative (-) probe of multimeter on
known good ground, and check multimeter
for voltage reading.
(8) Turn engine start switch and light control
switch to OFF position.
~
ACCESS
PANEL
CAB CONTROL BOX
CONNECTOR (J2)
CAB CONTROL BOX
CONNECTOR (P2)
4-251
Change 1
