D017185
IN USE
LIGHT, L5
EXTERNAL POWER RECEPTACLE, D1718
L00004
L00005
PWR NOT
AL PWR
IN USE
CONNECTION
BITE INSTRUCTIONS
BIT PERIODIC RESET
FWD TEST
EXTERNAL POWER PANEL, P30
CB1 CB2
A BUS POWER CONTROL UNIT, M116 B
External Power - Component Location
Figure 102 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 FAULT ISOLATION/MAINT MANUAL
P11 PANELP5 PANEL
ELECTRICAL SYSTEM CONTROL PANEL, MI0063
External Power - Component Location
Figure 102 (Sheet 2)
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ALL ú ú 01 Page 103 ú Dec 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
AC EXTERNAL POWER - ADJUSTMENT/TEST
___________________________________
1. General_______
A. This procedure is an operational test of the external power system. This test uses the indicator lights for the external power system and EICAS.
TASK 24-41-00-705-001
2. Operational Test - External Power System________________________________________
A. Equipment
(1) Cart, Ground Power - 115/200 |5 volts AC, 400 |20 Hz, 3-phase, ABC rotation, 90 KVA power capability
B. References
(1) AMM 27-61-00/201, Spoiler/Speedbrake Control System
C. Access
(1) Location Zone 124 Area Below Forward Cargo Compartment (Right) 211/212 Flight Comaprtment
D. Prepare for the Operational Test
S 045-002
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
_______ HYDRAULIC POWER IS SUPPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
(1) Do the deactivation procedure for the spoilers (AMM 27-61-00/201) or move all persons and equipment away from the spoilers.
E. Do an Operational Test of the External Power System
S 865-008
(1) Turn the STBY POWER switch on the pilots' overhead panel, P5, to the AUTO position.
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A
757
MAINTENANCE MANUAL
S 865-009
(2)
Push the BAT switch on the pilots' overhead panel, P5, to the ON position.
S 715-010
(3)
Do these steps to do an operational test of the external power system:
(a) Open the access cover for the external power panel, P30.
WARNING: REMOVE ELECTRICAL POWER FROM THE POWER CABLE BEFORE YOU
_______ CONNECT THE CABLE TO THE AIRPLANE. AN ELECTRICAL ARC CAN OCCUR WHICH CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(b)
Connect the power cable to the external power receptacle.
(c)
Supply electrical power to the external power cable.
(d)
Make sure the CONNECTED and NOT IN USE lights on the external power panel, P30, come on.
(e)
Do these steps at the electrical system control panel on the pilots' overhead panel, P5: 1) Make sure the AVAIL light in the EXT PWR switch is on. 2) Push the EXT PWR switch. 3) Make sure the AVAIL and ON lights in the EXT PWR switch are
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