TM 5-3610-253-14
Check for +24 V at pins 2 and 5 of plug connector 106. If correct
l.
voltage is not indicated, replace MC unit motherboard (paragraph
Check pin 3 of plug connector 106 for +24 V when back limit switch
m.
(S13) is not activated, and 0 volts when activated. If incorrect
indication is received, replace switch S13 (paragraph 5-40.39).
NOTE
Hold down false clamp switch and ensure that false clamp is removed from
clamp.
n.
Check pin 6 of plug connector 106 for +24 V when front limit switch
without false clamp (S9) is not activated, and O volts when activated.
If incorrect, replace switch S9 (paragraph 5-40.43).
NOTE
Install false clamp.
Check pin 9 of plug connector 106 for +24 V when front limit switch
o.
with false clamp (S8) is not activated, and O volts when activated. If
incorrect, replace switch S8 (paragraph 5-40.39).
Check pin 1 of plug connector 107 for +24 V. If voltage is incorrect,
p.
replace MC unit motherboard (paragraph 5-40.35).
Check pin 6 of plug connector 107 for +24 V with false clamp switch
q.
(S6) not activated and O volts when activated. If incorrect, replace
false clamp switch S6 (paragraph 5-40.43).
Check pin 7 of plug connector 108 for +5.1 V. If incorrect voltage
r.
is indicated, check PS5 circuit board (paragraph 5-40.63).
Turn off power.
s.
(1) Turn Star-Delta switch to Y position, then to O position.
(2) Turn main power switch to O position.
t.
Reinstall front and rear electronics enclosure covers.
5-538
