(c)
If you wish to stop the test while it continues, do one of the two steps that follows to stop the actuator test: 1) Pull the thrust lever rearward to make the TRA less than 40
degrees. 2) Push the START switch to the OFF position.
S 865-064-N00
(4) When IN PROGRESS goes off, look for PASS or FAIL> adjacent to <EEC 1B (2B,3B, or 4B) ACTUATORS.
NOTE: If a PASS indication shows, no failures occurred during the
____
test.
(a) If FAIL> shows, do the steps that follow:
1) Push the LSK that is adjacent to FAIL> to see the GROUND TEST MSG pages for the failure.
NOTE: This will show the fault(s) that caused the failure
____ or what caused the test to stop. The CMCS messages in the list below will cause the FAIL> indication.
"X" is 1, 2, 3 or 4.
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
TEST NO. 15 - EEC GROUND TEST OF ENGINE CONTROL SYSTEM ACTUATORS
________________________________________________________________
-7X351 NO TEST RESPONSE
-7X270 ENG-X EEC GROUND ACTUATOR TEST ABORTED
-7X101 ENG-X FMU TORQUE MOTOR WIRING/FMU FAIL (CH-B)
-7X102 ENG-X SVA TORQUE MOTOR WIRING/SVA FAIL (CH-B)
-7X103 ENG-X BLEED 2.5 TORQUE MOTOR WIRING/ACTUATOR FAIL (CH-B)
-7X104 ENG-X TCC TORQUE MOTOR WIRING/ACTUATOR FAIL (CH-B)
-7X105 ENG-X AIR-OIL COOLER TORQUE MOTOR WIRING/VALVE FAIL (CH-B)
-7X106 ENG-X FMU FAIL (CH-B)
-7X107 ENG-X SVA FAIL (CH-B)
-7X108 ENG-X UNIT FAIL (CH-B)
-7X109 ENG-X TCC ACTUATOR FAIL (CH-B)
-7X110 ENG-X AIR-OIL COOLER VALVE FAIL (CH-B)
-7X111 ENG-X FMU RESOLVER WIRING/FMU FAIL (CH-B)
-7X112 ENG-X SVA LVDT WIRING/SVA FAIL (CH-B)
-7X113 ENG-X BLEED 2.5 ACTUATOR RVDT WIRING/UNIT FAIL (CH-B)
-7X114 ENG-X TCC LVDT WIRING/ACTUATOR FAIL (CH-B)
-7X115 ENG-X AIR-OIL COOLER RVDT WIRING/ACTUATOR FAIL (CH-B)
-7X145 ENG-X EEC POWER FAIL (CH-B)
-7X258 ENG-X FMU RESOLVER FAIL 'XCHECK FAIL'
-7X201 ENG-X FMU TORQUE MOTOR WIRING/FMU FAIL
-7X202 ENG-X SVA TORQUE MOTOR WIRING/SVA FAIL
-7X203 ENG-X BLEED 2.5 TORQUE MOTOR WIRING/ACTUATOR FAIL
-7X204 ENG-X TCC TORQUE MOTOR WIRING/ACTUATOR FAIL
-7X205 ENG-X AIR-OIL COOLER TORQUE MOTOR WIRING/VALVE FAIL
-7X206 ENG-X FMU FAIL
-7X207 ENG-X SVA FAIL
-7X208 ENG-X BLEED 2.5 ACTUATOR UNIT FAIL
-7X209 ENG-X TCC ACTUATOR FAIL
-7X210 ENG-X AIR-OIL COOLER VALVE FAIL
-7X211 ENG-X FMU RESOLVER WIRING/FMU FAIL
-7X212 ENG-X SVA LVDT WIRING/SVA FAIL 7X213 ENG-X BLEED 2.5 ACTUATOR RVDT WIRING/UNIT FAIL 7X214 ENG-X TCC LVDT WIRING/ACTUATOR FAIL 7X215 ENG-X AIR-OIL COOLER RVDT WIRING/ACTUATOR FAIL 7X254 ENG-X EEC POWER FAIL
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.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
TEST NO. 15 - EEC GROUND TEST OF ENGINE CONTROL SYSTEM ACTUATORS
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4) Go to the 71-CMCS Message Index of the Fault Isolation Manual (FIM) to find the necessary corrections for each CMCS message.
S 715-075-N00
(5)
Use the Power Plant Dry-Motor procedure to do the engine shutdown (AMM 71-00-00/201).
G.
Do a Check for Leaks
S 015-204-N00
(1) Open the fan cowl panel (AMM 71-11-04/201).
S 045-206-N00
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
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