BITE DISPLAY UNIT - MAINTENANCE PRACTICES
1. General
A. This procedure has these tasks:
(1) BDU Main Menu
(2) BDU Existing Fault Menu
(3) BDU Fault History Menu
(4) BDU Ground Test Menu
(5) Other Function Menu
TASK 47-31-02-740-801
2. BDU Main Menu
(BDU Structure Map/Figure 201 or BDU Pushbutton Control/Figure 202 or BDU Standby Mode/Figure
203 or BDU Power Off Mode/Figure 204 or BDU Main Menu/Figure 205)
A. General
(1) This task gives the instructions to operate the main menu for the BDU control panel.
(2) To help you navigate through the NGS BDU menu structure, refer to BDU Structure
Map/Figure 201 or BDU Pushbutton Control/Figure 202 or BDU Standby Mode/Figure 203 or
BDU Power Off Mode/Figure 204 or BDU Main Menu/Figure 205.
(3) The NGS BDU control panel has a two line message display and six push button controls. Use
the message display and applicable push buttons to navigate through the BDU menu structure.
The BDU structure map gives an overview of the available menu item lists and their
relationship to other menu items.
B. References
Reference Title
32-09-00-860-802 Return the Airplane to the Ground Mode (P/B 201)
47-00-00-010-801 Nitrogen Generation System (NGS) Precautions (P/B 201)
C. Location Zones
Zone Area
131 Center Section Wing Box, Body Station 540.00 to Body Station 663.75 - Left
D. Access Panels
Number Name/Location
192CR ECS Access Door
621GB Refuel Access Panel - Slat Station 143.27
E. Prepare to Use the BDU
SUBTASK 47-31-02-010-004
WARNING
OBEY THE SUBSEQUENT STEPS FOR ACCESS PANELS IDENTIFIED WITH
A NITROGEN GENERATION SYSTEM PLACARD. IF THERE IS A LEAK IN THE
NITROGEN GENERATION SYSTEM, IT WILL DECREASE THE OXYGEN IN
THE AIR THAT YOU BREATHE. IF YOU BREATHE AIR THAT DOES NOT HAVE
SUFFICIENT OXYGEN, DANGEROUS HEALTH CONDITIONS CAN QUICKLY
OCCUR.
(1) Obey the precautions in this task: Nitrogen Generation System (NGS) Precautions,
TASK 47-00-00-010-801.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-31-02
Page 201
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF 402, 452, 509, 510, 523, 525-528, 568, 569, 576, 577, 581, 583, 585, 588-590,
592-599, 601-603, 606, 607, 610-615, 620, 625-627, 691-699, 833-835, 838, 971, 980-999;
ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405,
406, 409, 410, 412, 416, 424, 425, 427-429, 451, 501-504, 507, 508, 512-514, 516, 518,
524, 531-533, 535-537, 541, 542, 552-556, 560-562, 567, 571-575, 671, 672, 686, 703,
707-710, 803-813, 821, 822, 831, 832, 836, 837, 841, 842, 851, 852, 854-858, 861-863,
871-874, 947, 948, 968-970, 972, 973 POST SB 737-47-1003
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