F
Remove cover from blackout (BO) marker and remove BO
marker bulb (p 6-36). Turn MASTER switch ON and move light
switch to BO MARKER position. Using multimeter, place red
lead in center contact and black lead to ground. If voltage is
present, replace bulb (p 6-36). If no voltage, wire 24 is defec-
tive. Notify Support Maintenance.
1
G Remove cover from blackout (BO) drive light and remove BO
drive light bulb (p 6-31). Turn MASTER switch ON and move
light switch to BO DRIVE position. Then move BO SELEC-
TOR switch to the BOD position. Using multimeter, place red
lead in center contact and black lead to ground. If voltage is
present, replace bulb (p 6-31). If no voltage, go to step H.
TA310520
2-161
TM 9-2350-267-20