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31-51-02
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A
747-400 MAINTENANCE MANUAL
2) 7B01, MAWEA PWR B
S 864-023
(2) Also open these circuit breakers and attach DO-NOT-CLOSE tags if you install the Stall Warning Card:
(a) P7, Overhead Circuit Breaker Panel
1) 7D05, STICK SHAKER L
2) 7D19, STICK SHAKER R
S 864-024
(3) Also open these circuit breakers and attach DO-NOT-CLOSE tags if you install the Aural Synthesizer Card:
(a) P7, Overhead Circuit Breaker Panel
1) 7A03, AURAL WARN L
2) 7A04, AURAL WARN R
S 424-039
CAUTION: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL A
_______ PRINTED-CIRCUIT CARD. A FAILURE TO DO THE STEPS CORRECTLY CAN CAUSE DAMAGE TO THE EQUIPMENT.
(4) Do this task to install the applicable printed-circuit card in the MAWEA card file: "ESDS Circuit Card Installation" (AMM 20-41-02/201).
(a)
Put the top and bottom edges of the printed-circuit card assembly into the card slots.
(b)
Push the card assembly in until it tightly engages in the connector.
(c)
Tighten the screws at the ends of the card.
S 864-026
(5) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P7, Overhead Circuit Breaker Panel
1) 7B01, MAWEA PWR B
2) 7A01, MAWEA PWR A
S 864-027
(6) Also close these circuit breakers and remove the DO-NOT-CLOSE tags if you replaced the Stall Warning Card:
(a) P7, Overhead Circuit Breaker Panel
1) 7D05, STICK SHAKER L
2) 7D19, STICK SHAKER R
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
31-51-02
ALL ú ú 01 Page 404 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-028
(7) Also close these circuit breakers and remove the DO-NOT-CLOSE tags if you replaced the Aural Synthesizer Card:
(a) P7, Overhead Circuit Breaker Panel
1) 7A03, AURAL WARN L
2) 7A04, AURAL WARN R
S 704-037
(8) Do this task: "MAWEA Printed-Circuit Card Test" (Ref Paragraph 4).
TASK 31-51-02-704-013
4. MAWEA Printed-Circuit Card Test
_______________________________
A. References
(1)
AMM 27-32-01/401, Stall Warning Card - R&I
(2)
AMM 31-31-00/501, Flight Recorder System
(3)
AMM 24-22-00/201, Manual Control
B. Access
(1) Location Zone 116 Area Between Nose Wheel Well and Fuselage-RH 221/222 Control Cabin
C. Procedure
S 864-033
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-032
(2)
Set the IRS L, C, and R switches to the ALIGN or NAV position.
NOTE: You DO NOT have to wait the 10 minutes for the IRS to
____ align. The labels that the circuit card is checking are present as soon as the IRS is in the ALIGN or NAV position.
S 864-034
(3)
Make sure these circuit breakers are closed:
(a) P7, Overhead Circuit Breaker Panel
1) 7A03, AURAL WARN L
2) 7A04, AURAL WARN R
(4)
Open and then close these circuit breakers to start the test:
S 864-030
NOTE: Make sure you close these circuit breakers at the same
____ time. The BITE test can fail if these circuit breakers are closed individually.
(a) P7, Overhead Circuit Breaker Panel
1) 7A01, MAWEA PWR A
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 指示/记录系统 2(13)
