(2)
Access Panel
415 Left Thrust Reverser Half - Engine 1
425 Left Thrust Reverser Half - Engine 2
435 Left Thrust Reverser Half - Engine 3
445 Left Thrust Reverser Half - Engine 4
D.
Prepare for the Test
(1)
Supply external electrical power (AMM 24-22-00/201).
(2)
Test the indicator lights for the electrical system.
S 865-002
S 715-003
NOTE: The lights are found on the P5 overhead panel and the
____
P461 overhead maintenance panel.
(a)
Set the IND LTS switch to TEST.
(b)
Make sure that all the indicator lights for the electrical system are on.
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MAINTENANCE MANUAL
SEE A
SEE B
FLIGHT COMPARTMENT
ELECTRICAL
1 2 3 4
EXT 1 APU 1 APU 2 EXT 2
AC-V 0 115 115 115 115 115 0 115
FREQ 0 400 400 400 400 400 0 400
LOAD 0.00 0.73 0.75 0.75 0.75 0.75 0.00 0.65
MAIN BAT APU BAT
DC-V 28 28 28 28 28 28
DC-A CHG10 35 35 35 35 DIS10
IDG OUT.TEMP 145 175 145 145 IDG RISE TEMP 35 35 35 35
GEN 2 DRIVE DATE02SEP90 GMT18:54:04
ELECTRICAL SYSTEM CONTROL MODULE ELECTRICAL SYSTEM MAINTENANCE DISPLAY (TYPICAL)
B A
Electrical System Control/Maintenance Display Location Figure 501
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A 747-400 MAINTENANCE MANUAL
(c) Set the IND LTS switch to BRT.
(3) S 865-006Make sure that the L and R UTILITY switches are ON. (a) Make sure that the OFF lights are not on.
(4) S 865-008Set the BUS TIE 1, 2, 3, and 4 switches to AUTO. (a) Make sure that the ISLN lights are off.
SEE A
MAIN GEARBOX
INTEGRATED DRIVE GENERATOR
FWD IDG RESET RING
A
Integrated Drive Generator Reset Ring Location
Figure 502
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747-400 MAINTENANCE MANUAL
S 865-007
(5)
Make sure that the GEN CONT 1, 2, 3, and 4 switches are ON.
(a)
Make sure that the OFF lights are on.
S 865-042
(6)
Make sure that the DRIVE lights on the DRIVE DISC 1, 2, 3, and 4 switches are ON.
S 865-009
(7)
Make sure that the FIELD OFF lights on the manual field reset switches, are off.
NOTE: The manual field reset switches are for the IDG generators.
____
(a)
The FIELD OFF lights are found on the P461 overhead maintenance panel.
(b)
If the FIELD OFF light(s) are on, push and release the field reset switch to turn the lights off.
E. Do the Operational Test
S 615-011
(1) Fill the IDG oil if it is necessary (AMM 12-13-07/301).
NOTE: If the IDG oil reservoir is empty, the overtemperature relief
____
valve on the IDG possibly opened.
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