3) 2 TRANSFER BUS OFF
4) 2 SOURCE OFF
(e) Make sure these lights on the P5-4 panel are on:
1) 1 GEN OFF BUS
2) 2 GEN OFF BUS
(f) Set the AC meter selector switch on the P5-13 panel to the GRD PWR position.
(g) Make sure the AC meter on the P5-13 panel shows these values:
1) AC VOLTS = 110-120
2) CPS FREQ = 395-405
(h) Make sure the APU GEN OFF BUS light on the P5-4 panel is off
(i) Do this task: APU Starting and Operation, TASK 49-11-00-860-801.
(j) Make sure the APU GEN OFF BUS light on the P5-4 panel comes on.
NOTE: The APU GEN OFF BUS light should come on approximately 50 seconds after
the APU is started.
(k) Set the 1 APU GEN switch on the P5-4 panel to the ON position.
(l) Make sure the APU GEN OFF BUS light goes off.
(m) Make sure the GRD POWER AVAILABLE light stays on.
(n) Make sure these lights on the P5-4 panel stay off:
1) 1 TRANSFER BUS OFF
2) 1 SOURCE OFF
3) 2 TRANSFER BUS OFF
(o) Set the 2 APU GEN switch on the P5-4 panel to the ON position.
(p) Make sure the 2 SOURCE OFF light goes off.
(q) Set the AC meter selector switch on the P5-13 panel to the APU GEN position.
(r) Make sure the AC meter on the P5-13 panel shows these values:
1) AC VOLTS = 110-120
2) CPS FREQ = 395-405
(s) Set the GRD PWR switch to the ON position.
(t) Make sure the APU GEN OFF BUS light comes on.
(u) Make sure the GRD POWER AVAILABLE light stays on.
(v) Make sure these lights on the P5-4 panel stay off:
1) 1 TRANSFER BUS OFF
2) 1 SOURCE OFF
3) 2 TRANSFER BUS OFF
4) 2 SOURCE OFF
(w) Set both of the APU GEN switches to the ON position.
(x) Make sure the APU GEN OFF BUS light goes off.
(y) Make sure the GRD POWER AVAILABLE light stays on.
(z) Make sure these lights on the P5-4 panel stay off:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-21-00
Page 502
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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