TM 5-3610-253-14
Table 5-9. DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. WITH CUTTING BUTTONS DEPRESSED, CUTTING AND CLAMPING ARE INOPERATIVE, LIGHT
BARRIER SIGNAL LAMP IS LIT - Cont
Step 8.
Check for +42 V at pin 5 of plug connector ST 51 with cutting
buttons depressed.
(a) If voltage is present, replace control block (paragraph
(b) If voltage is not present, proceed to step 9.
Step 9.
Check for +42 V at pin 5 of plug connector ST 14 with cutting
buttons depressed.
(a)
If voltage is present, replace PC card 27 (paragraph
(b)
If voltage is not present, proceed to step 10.
Step 10. Check for +42 V at pin 4 of plug connector ST 56.
(a)
If voltage is present, proceed to step 12.
(b)
If voltage is not present, proceed to step 11.
Step 11. Check for 50 V ac input to fuse e5.
(a)
(b)
Step 12. Check for +24 V at pin 2 of plug connector SZ 40 when cutting
buttons are depressed. Use pin 5 of plug connector ST 70 as
ground.
(a) If voltage is missing, replace PC card 7SB (paragraph
(b) If voltage is present, proceed to step 13.
5-224