S 715-096
(2)
Make sure CMCS message 45006 (CMC-R>CMC-L BUS FAIL) is not in EXISTING FAULTS:
NOTE:____ The right CMC is serviceable if CMCS message 45006 is not in EXISTING FAULTS.
(a)
Push the LSK that is adjacent to <EXISTING FAULTS.
(b)
Look for <45 CENTRAL MAINTENANCE. (Push the NEXT PAGE key to see more pages.)
(c)
If <45 CENTRAL MAINTENANCE shows, push the adjacent LSK.
(d)
Look for CMCS message 45006 (CMC-R>CMC-L BUS FAIL). (Push the NEXT PAGE key to look at each message page.)
S 865-080
(3) Remove the electrical power if it is not necessary
(AMM 24-22-00/201).
TASK 45-10-00-745-133
3. Ground Test - Printer_____________________
A. General
(1) During this test the printer does an internal test. If the printer has no failures, it makes a printout of a page of characters. The lights on the front panel of the printer come on during the test.
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 34-61-02/401, Control Display Unit
(3)
AMM 45-10-00/501, Central Maintenance Computer System
C. Access
(1) Location Zones
221 Control Cabin, LH
222 Control Cabin, RH
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
D. Preconditions
S 865-130
(1) These conditions are necessary for this task:
(a)
Electrical power on (AMM 24-22-00/201).
(b)
CDU installed (AMM 34-61-02/401).
(c)
Central Maintenance Computer System (CMCS), serviceable (AMM 45-10-00/501).
E. Prepare for the Test
S 865-076
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-077
(2)
Prepare the CDU for the test:
(a)
Push the MENU key on the CDU to show the MENU.
(b)
Push the line select key (LSK) that is adjacent to <CMC to show the CMC MENU.
(c)
If <RETURN shows, push the LSK that is adjacent to <RETURN until you see the CMC MENU.
(d)
Push the LSK that is adjacent to <GROUND TESTS to show the GROUND TESTS menu.
(e)
Push the NEXT PAGE key until you find <45 CENTRAL MAINTENANCE.
(f)
Push the LSK that is adjacent to <45 CENTRAL MAINTENANCE to show the GROUND TESTS menu for the central maintenance computer system.
F. Printer Ground Test
S 745-078
(1) Push the LSK that is adjacent to <PRINTER.
NOTE: IN PROGRESS shows during the test.
____
S 745-102
(2) When IN PROGRESS goes out of view, look for PASS or FAIL> adjacent to <PRINTER.
NOTE: If a PASS indication shows, no failures occurred during the
____
test.
(a) If FAIL> shows: 1) Push the LSK that is adjacent to FAIL> to see the GROUND TEST MSG pages for the failure. 2) Push the NEXT PAGE key until you find all the GROUND TEST MSG pages. 3) Make a list of all CMCS messages, CMCS message numbers, and ATA numbers that show on the GROUND TEST MSG pages.
4) Go the the CMCS Message Index of the Fault Isolation Manual (FIM) to find the corrective action for each CMCS message.
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