TASK 45-10-00-735-053
4. System Test - Central Maintenance Computer System_________________________________________________
A. General
(1) This task contains two procedures. The first procedure is a configuration check of the left central maintenance computer (CMC). The second procedure is a configuration check of the right CMC.
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 31-61-00/501, Integrated Display System
(3)
AMM 34-61-02/401, Control Display Unit
(4)
AMM 45-10-01/201, CMC Option Code Installation
C. Access
(1) Location Zones 117 Electrical and Electronics Compartment, LH 221 Control Cabin, LH 222 Control Cabin, RH
D. Preconditions
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(1) These conditions are necessary for this task:
(a)
Electrical power on (AMM 24-22-00/201).
(b)
Integrated Display System (IDS), serviceable (AMM 31-61-00/501).
(c)
CDU installed (AMM 34-61-02/401).
E. Prepare for the Test
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(1)
Supply electrical power (AMM 24-22-00/201).
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(2)
Show the CONFIG maintenance page on the auxiliary EICAS:
(a)
Push the MENU key on a CDU.
(b)
Push the line select key (LSK) that is adjacent to <CMC to show the CMC-L MENU.
(c)
If <RETURN shows, push the LSK that is adjacent to <RETURN until you see the CMC-L MENU.
(d)
Push the LSK that is adjacent to <EICAS MAINT PAGES.
(e)
Push the NEXT PAGE key.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(f)
Push the LSK that is adjacent to <31 CONFIG.
(g)
Push the LSK that is adjacent to <DISPLAY.
F. Configuration Check of The Left CMC
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(1) Show the CONFIGURATION DATA page for the left CMC on the CDU:
(a)
Push the LSK that is adjacent to <RETURN until the CMC-L MENU shows.
(b)
Push the NEXT PAGE key to show page 2 of the CMC-L MENU.
(c)
Push the LSK that is adjacent to <OTHER FUNCTIONS.
(d)
Push the LSK that is adjacent to <CONFIGURATION.
(e)
Push the LSK that is adjacent to <45 CENTRAL MAINTENANCE.
(f)
Push the LSK that is adjacent to <CMC-L.
(g)
Make sure that CMC-L shows on the CONFIGURATION DATA page.
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(2) Make sure that the correct CMC option code shows adjacent to OC-A and OC-B (AMM 45-10-01/201).
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CAUTION: MAKE SURE YOU KNOW THE CORRECT SOFTWARE PART NUMBER FOR THE
_______ CMC, WHEN YOU LOOK AT THE SOFTWARE PART NUMBER ON THE CDU. FOR THE CMC TO BE AN APPROVED INSTALLATION, THE CORRECT SOFTWARE PART NUMBER MUST BE INSTALLED.
(3) Make sure the correct CMC software part number shows adjacent to the S/W.
(a) If the part number is incorrect, install software in the left CMC (AMM 45-10-10/201).
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(4)
Make sure that the part number of the airline data base shows adjacent to ALDB.
(a) If the part number does not show or is incorrect, install the airline data base in the left CMC (AMM 45-10-10/201).
(5)
Make sure that this indication shows adjacent to EIU: PW -XXX
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NOTE: XXX is the IDS software version number.
____
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(6)
Make sure that the numbers XXX agree with the last three digits of the IDS software part number on the CONFIG page on the auxiliary EICAS.
