TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
14. MAIN FRAME DOES NOT UNLOAD IN MANUAL MODE (MODEL A ONLY)
(continued).
7.
TEST OPTIONS
KNOWN INFO
Are 2228 volts
Cab controls and remote
Voltage Test.
measured at the cab
control inoperative.
control box connector
REASON FOR QUESTION
POSSIBLE PROBLEMS
(J2), position F?
Output voltage to activate
the main frame UNLOAD
Cab control box faulty.
Linking harness faulty.
cab control box during
Main junction box wiring
both cab and remote
faulty.
control modes of opera-
Main frame UNLOAD
tion.
Go to Step 16.
NO
YES
4-280
Change 1