SECTION V: TROUBLESHOOTING
Remove all jewelry such as rings, dog
tags, bracelets, etc. If jewelry contacts a
metal surface a direct short may result in
instant heating of tools, damage to
Remove four nuts (6), four lockwashers (7), and four
screws (8), and release APU control box (9) from
mounting bracket. Place a jumper wire from pin N to
socket N. Place red lead of multimeter on pin J of wire
493 and black lead to ground. Turn MASTER APU
FUEL SHUTOFF switches ON, and check for voltage.
Turn MASTER and APU FUEL SHUTOFF switches
OFF. If voltage is present, go to step L. If voltage is
not present, go to step F.