MAIN EQUIPMENT CENTER
C
LEFT OR RIGHT CENTRAL MAINTENANCE
COMPUTER (CMC), M7373 OR M7374
D
GND TESTS
ENABLE
NORM
REMOTE GROUND TEST REMOTE CONTROL DISPLAY ENABLE SWITCH, S2090 UNIT (RCDU), M6711
E F
Central Maintenance Computer System - Component Location Figure 102 (Sheet 2)
B50366
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A
747-400 MAINTENANCE/CMCS BITE MANUAL
CENTRAL MAINTENANCE COMPUTER SYSTEM - MAINTENANCE PRACTICES
___________________________________________________________
1. General_______
A. This subject has these tasks:
(1)
Display of Present Leg Faults
(2)
Performance of Confidence Tests
(3)
Display of EICAS Maintenance Pages
(4)
Prepare the CDU for a Ground Test
(5)
Display of Existing Faults
(6)
Display of Fault History
(7)
Display of Shop Faults
(8)
Use of Input Monitoring
(9)
Display of the Configuration Data Page
(10)
Manual Flight Leg Control
(11)
Printer Report of a CDU Display
(12)
ACARS Report of a CDU Display
B. For these tasks you will use one of the CDUs. For the display of EICAS maintenance pages you will also use the lower EICAS display.
TASK 45-10-00-862-015
2. Display of Present Leg Faults (Fig. 201, Fig. 202)_____________________________
A. General
(1) The present leg faults function supplies data about failures that occurred during this flight leg. The CDU first shows a list of all flight deck effects (FDEs) in the sequence that they occurred. You can look at the CMCS fault messages that are correlated to each FDE that has a caret (<) adjacent to it. You can also look at CMCS fault messages that are not correlated to a FDE.
B. Access
(1) Location zones
221 Control Cabin, LH
222 Control Cabin, RH
C. Procedure
S 862-016
(1) Show the CMC MENU on the CDU:
(a)
Push the MENU key on the CDU to show the CDU MENU.
(b)
Push the <CMC LSK (line select key) to show the CMC MENU.
(c)
If the CMC MENU is not shown after you push the CMC LSK, push the <RETURN LSK until you see the CMC MENU.
S 862-017
(2) Show the flight deck effects (FDEs) that occurred during this flight leg on the PRESENT LEG FAULTS menu:
(a) Push the <PRESENT LEG FAULTS LSK to show the first page of a list of FDEs.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE/CMCS BITE MANUAL
LINE SELECT KEYS (LSK)
CMC Menu Access
Figure 201 (Sheet 1)
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