24-22-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
(e)
(f)
757 MAINTENANCE MANUAL
b) Isolate the failure which caused the DRIVE light to come on (FIM 24-20-00/101). 4) Push the L GEN CONT switch on the P5 panel to ON position. a) Make sure the yellow OFF light in the GEN CONT switch is off. 5) Make sure the left (L BUS) BUS OFF light on the P5 panel is
off.
Do these steps to energize the right 115V ac bus with the left
generator power:
NOTE: The right main ac bus must not be energized by external
____ power, the APU generator, or the right generator. The APU GEN CONT and EXT PWR switches on P5 must be off. The right engine must be off, or the R GEN CONT switch (P5) must be OFF.
1) Energize the left main ac bus with the left generator power (AMM 24-22-00/201).
2) Push the two BUS TIE switches on the P5 panel to AUTO position. a) Make sure the ISLN light in each switch goes off.
3) Make sure the two BUS OFF lights on the P5 panel are off.
Do these steps to energize the right 115V ac bus with the right
generator power:
1) Make sure the yellow DRIVE light in the R GEN DRIVE DISC switch on the P5 panel is on.
2) Operate the right engine (AMM 71-00-00/201).
CAUTION: MAKE SURE THE YELLOW DRIVE LIGHT IN THE R GEN DRIVE
_______ DISC SWITCH (P5) GOES OFF AFTER YOU START THE ENGINE. HIGH OIL OUT TEMPERATURE OR LOW OIL PRESSURE CAN CAUSE DAMAGE TO THE IDG.
3) Make sure the yellow DRIVE light in the R GEN DRIVE DISC switch on the P5 panel is off. a) If the DRIVE light in the R GEN DRIVE DISC switch comes on, push the R GEN DRIVE DISC switch and stop the engine (AMM 71-00-00/201). b) Isolate the failure which caused the DRIVE light to come on (FIM 24-20-00/101).
4) Push the R GEN CONT switch on the P5 panel to the ON position. a) Make sure the yellow OFF light in the R GEN CONT switch
is off. 5) Make sure the right (R BUS) BUS OFF light on the P5 panel is off.
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24-22-00
ALL ú ú 01 Page 211 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(g) Do these steps to energize the left 115V ac bus with the right generator power:
NOTE: The left main ac bus must not be energized by external
____ power, the APU generator, or the left generator. The APU GEN CONT and EXT PWR switches on P5 must be off. The left engine must be off, or the L GEN CONT switch (P5) must be off.
1) Energize the right main ac bus with right generator power (AMM 24-22-00/201).
2) Push the two BUS TIE switches on the P5 panel to AUTO position. a) Make sure the ISLN light in each switch goes off.
3) Make sure the two BUS OFF lights on the P5 panel are off.
(h)
Do these steps to supply power to the utility/galley bus: 1) Energize the main ac bus which supplies the applicable utility/galley bus (AMM 24-22-00/201).
2) Push the applicable (L or R) UTILITY BUS switch on the P5 panel to ON position. a) Make sure the yellow OFF light in the switch goes off.
(i)
Do these steps to manually reset the utility/galley buses:
1) If a load shed occurs for a one power source and locks out the automatic set for the utility/galley bus, do these steps to manually reset: a) Set one or both throttle levers to the idle detent
position. b) Stop for a minimum of 10 seconds. c) Cycle the applicable utility bus switch off and on. d) Make sure the yellow OFF light in each switch is off.
S 862-020
(2) Do these steps to remove the IDG power from the main AC buses:
(a)
Shut down the engine(s) (AMM 71-00-00/201).
(b)
Make sure the yellow DRIVE lights in the L and R GEN DRIVE DISC switches on the P5 panel are on.
(c)
Make sure the yellow OFF lights in the L and R GEN CONT switches are on.
(d)
Make sure the two BUS OFF lights on the P5 panel are on.
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