TM 5-3610-253-14
Table 5-23. DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
ERROR MESSAGE 81 - Cont
Check +24 V supply voltage to proximity switches at plug
Step 1.
connector 44, ground on pin 6 and +24 V on pin 4.
If voltage is missing, replace PS 24 (paragraph 5-40.31).
(a)
If correct, proceed to step 2.
(b)
Step 2. Check switches for proper operation, B.SBA (rear switch) closed,
B.SBE (front switch) open.
Perform test of safety bolt proximity switches and replace
(a)
defective parts (paragraph 5-40.3).
(b)
If correct readings are obtained, proceed to step 3.
5-471
