S 215-012
(2)
Get access to the electrical maintenance page (AMM 45-10-00/201).
(a)
Make sure that the EICAS screen for the IDGs 1, 2, 3, and 4 shows: 1) zero AC-V 2) FREQ of zero Hz 3) LOAD of 0.00
S 865-013
CAUTION: THE DRIVE LIGHT IN THE DRIVE DISC SWITCH MUST GO OFF AFTER THE
_______ ENGINE STARTS. IF DRIVE LIGHT STAYS ON, OR GOES ON WHILE THE ENGINE OPERATES, PUSH THE DRIVE DISC SWITCH. THIS REMOVES THE INPUT POWER TO THE IDG. HIGH OIL TEMPERATURE OR LOW OIL PRESSURE CAN CAUSE DAMAGE THE IDG.
(3)
Start the applicable engine (AMM 71-00-00/201).
S 715-014
(4)
Make sure that the OFF light on the GEN CONT 1, 2, 3, or 4 switch goes off when the engine gets to idle speed.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-11-00
ALL ú ú 02 Page 504 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 715-015
(5) Make sure that the AVAIL light on EXT PWR 1 and EXT PWR 2 switches are on.
(a) Make sure that the ON lights are off.
S 715-016
(6) Make sure that the EICAS screen for the applicable IDG shows: (a) 115 | 5 AC-V (b) FREQ of 400 | 5 Hz (c) a LOAD is shown.
S 715-036
(7) Push the applicable GEN CONT 1, 2, 3, or 4 switch. (a) Make sure that the OFF light goes on.
S 715-037
(8) Make sure that the EICAS screen for the applicable IDG shows: (a) zero AC-V (b) FREQ of 400 | 5 Hz (c) the LOAD is 0.00
S 865-017
(9) Set the applicable GEN FIELD MAN RESET switch to RESET, then release it.
NOTE: The GEN FIELD MAN RESET switch is found on the P461
____ overhead maintenance panel.
(a) Make sure that the applicable FIELD OFF light is off.
S 715-018
(10)
Make sure that the EICAS screen for the applicable IDG shows:
(a)
115 | 5 AC-V
(b)
FREQ of 400 | 5 Hz
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-11-00
ALL ú ú 02 Page 505 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(c) the LOAD is 0.00
S 715-039
(11)
Push the applicable GEN CONT 1, 2, 3, or 4 switch.
(a)
Make sure that the OFF light goes off.
S 715-043
(12)
Make sure that the EICAS screen for the applicable IDG shows:
(a)
115 | 5 AC-V
(b)
FREQ of 400 | 5 Hz
(c)
a LOAD is shown
S 865-021
(13) Apply loads to the airplane ac and dc buses for the applicable engine.
NOTE: Airplane loads include galley ovens, window heat,
____
compartment heat, and water heaters.
S 715-022
(14)
Make sure that the EICAS screen for the applicable IDG shows:
(a)
115 | 5 AC-V
(b)
FREQ of 400 | 5 Hz
(c)
the LOAD has increased
(d)
Make sure that the IDG OUT TEMP and the IDG RISE TEMP are in the correct range.
NOTE: The normal range for IDG oil out temperature at idle is
____ 80-115 degrees C. The normal rise temperature is 3 to 14 degree C.
S 865-023
(15) Remove the loads from the airplane ac and dc buses.
F. Disengage the IDG
S 865-044
(1) Start the applicable engine (AMM 71-00-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-11-00
ALL ú ú 02 Page 506 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 715-024
CAUTION:_______ DO NOT PUSH THE IDG DISCONNECT SWITCH WHEN THE ENGINE SPEED IS
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 ELECTRICAL POWER 電源 1(21)
