3) Push the ENGINE X LSK for the applicable resolver.
NOTE: This causes the ENGINE X BITE TEST MAIN MENU to show. Also, the
ENGINE X1 LSK automatically applies power to the EEC and causes the
EEC to initialize. The CDU will show INITIALIZING EEC X, and EEC
SORTING FAULT HISTORY DATA for a short time, just before the ENGINE
X BITE TEST MAIN MENU shows.
SUBTASK 76-11-05-710-001-F00
(11) Do these steps to find if the applicable Engine X resolver is in limits:
(a) Make sure that the applicable engine thrust lever against the IDLE stop.
(b) Push the INPUT MONITORING LSK.
NOTE: This will cause the CAUTION SCREEN of INPUT MONITORING to show.
(c) Push the CONTINUE LSK.
(d) Push the CONTROL LOOPS LSK.
NOTE: This will cause screen 1 of the CONTROL LOOPS to show.
(e) Push the NEXT PAGE key two times.
NOTE: This will cause screen 3 of the CONTROL LOOPS to show.
(f) Push the TRA LSK on screen 3 of the CONTROL LOOPS.
NOTE: This causes the Thrust Lever Resolver Angle (TRA) for channels A and B, of
Engine X, to show.
NOTE: The data for the channel that is in control will show first.
1) The TRA POSITION CH A and TRA POSITION CH B indications on the CDU must
read 36.0 ±0.8 degrees.
2) The difference between the TRA POSITION CH A and the TRA POSITION CH B
should be less than 0.8 degree.
(g) If the indications are not in the specified range, do the resolver adjustment procedure
below for the applicable resolver; and continue the procedure at the step that follows.
CAUTION
DO NOT LET THE SEL POSITION DISPLAY SHOW GREATER THAN 80.0
DEGREES, AS YOU DO THIS STEP. IF THE DISPLAY SHOWS MORE
THAN 80.0 DEGREES, YOU MUST MOVE THE THRUST LEVER TO THE
IDLE STOP AND START AGAIN. IF YOU DO NOT OBEY THESE
INSTRUCTIONS, THE RESULTS OF THE TEST ARE NOT ACCURATE.
(h) If the POSITION CH A and POSITION CH B indications are in the specified range, do
these steps:
1) Slowly move the thrust lever forward until the TRA POSITION reads:
a) The TRA POSITION CH A and TRA POSITION CH B indications on the CDU
read 78.0 ±2.0 degrees.
b) Stop for a minimum of 2 seconds.
(i) Make sure that the thrust lever does not move from this position.
(j) Record the value that shows in the POSITION CH A line to the nearest tenth of a degree.
SUBTASK 76-11-05-720-001-F00
(12) Do these steps to set the alignment with the opposite thrust lever:
(a) Push the INDEX LSK four times, to get access to the MAINT BITE INDEX screen.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
CFM56 ENGINES (CFM56-7)
76-11-05
Page 504
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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