(b)
Push the BAT switch on the pilot's overhead panel, P5, to the ON position (latched-in position).
(c)
Make sure the left BUS TIE switch on the P5 panel is off (out position). 1) Make sure the yellow ISLN light in the switch is on.
(d)
Push the EXT PWR switch on the P5 panel. 1) Make sure the white ON light in the switch comes on.
(e)
Push the left BUS TIE switch to the AUTO position (latched-in position). 1) Make use the yellow left BUS OFF light on the P5 panel goes
off.
(f)
Push the left BUS TIE switch to off (out position). 1) Make sure the amber ISLN light in the switch is on.
(g)
Push the RESET button on the bus power control unit (BPCU). (The BPCU is on shelf 3 of the mid equipment center rack E5.) 1) Make sure these messages show on the BPCU, in the sequence
that follows:
a) EXTERNAL POWER SYSTEM
b) LEFT GEN POWER SYSTEM
c) RIGHT GEN POWER SYSTEM
d) APU GEN POWER SYSTEM.
(h)
Remove electrical power if it is not necessary.
S 714-008
(3) Do the steps that follow to do a test of the right generator control unit:
(a) Supply external power to the ac ground handling bus
(AMM 24-22-00/201).
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(b)
Push the BAT switch on the pilot's overhead panel, P5, to the ON position (latched-in position).
(c)
Make sure the right BUS TIE switch on the P5 panel is off (out position). 1) Make sure the yellow ISLN Light in switch is on.
(d)
Push the EXT PWR switch on the P5 panel. 1) Make sure the white ON light in the switch comes on.
(e)
Push the BUS TIE switch to the AUTO position (latched-in position). 1) Make sure the yellow right BUS OFF light on the P5 panel
goes off.
(f)
Push the right BUS TIE switch to off (out position). 1) Make sure the yellow ISLN light in the switch is on.
(g)
Push the RESET button on the bus power control unit (BPCU). (The BPCU is on shelf 3 of the mid equipment center rack E5.) 1) Make sure these messages show on the BPCU, in the sequence
that follows:
a) EXTERNAL POWER SYSTEM
b) LEFT GEN POWER SYSTEM
c) RIGHT GEN POWER SYSTEM
d) APU GEN POWER SYSTEM.
(h)
Remove electrical power if it is not necessary.
S 714-009
(4) Do the steps that follow to do a test of the APU generator control unit:
(a)
Push the BAT switch on the P5 panel to the ON position (latched-in position).
(b)
Make sure the two BUS TIE switches on the P5 panel are off (out position). 1) Make sure the yellow ISLN light in each switch is on.
(c)
Push the APU GEN switch on the P5 panel to the ON position (latched-in position).
(d)
Start the APU (AMM 49-11-00/201).
1) Make sure the OFF light in the APU GEN switch on the P5 panel stays off.
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(e)
Push the APU GEN switch to off (out position). 1) Make sure the yellow OFF light in the APU GEN switch is on.
(f)
Stop the APU (AMM 49-11-00/201).
(g)
Push the RESET button on the bus power control unit (BPCU). (The BPCU is on shelf 3 of the mid equipment center rack E5.) 1) Make sure these messages show on the BPCU, in the sequence
that follows:
a) EXTERNAL POWER SYSTEM
b) LEFT GEN POWER SYSTEM
c) RIGHT GEN POWER SYSTEM
d) APU GEN POWER SYSTEM.
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