SUBTASK 76-11-07-710-011-F00
(2) Do these steps to show the TRA values for the Engine X thrust lever:
(a) Push the INPUT MONITORING LSK.
NOTE: This will cause the CAUTION SCREEN OF INPUT MONITORING to show.
(b) Push the CONTROL LOOPS LSK.
NOTE: This will cause screen 1 of the CONTROL LOOPS to show.
(c) Push the NEXT PAGE key two times.
NOTE: This will cause screen 3 of the CONTROL LOOPS to show.
(d) Push the TRA line select key (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.
SUBTASK 76-11-07-710-012-F00
(3) Do these steps to do a check of the applicable switch in the left switchpack:
(a) Insert a rod below the left reverse thrust interlock solenoid latch.
1) Move the latch up and off of the autothrottle brake cam.
(b) Mechanically restrain the rod to hold the left interlock solenoid off the autothrottle brake
cam.
NOTE: This will let the brake housing turn and not be limited by the solenoid.
(c) Move the left thrust lever and reverse thrust lever until the TRA value that shows on the
CDU is in the range shown in the table below (Table 501):
NOTE: The forward mechanical stop (full forward thrust) is at 84 +/-1 degrees TRA, the
idle stop is at 36 +/-0.25 degrees TRA, and the aft mechanical stop (full reverse
thrust) is at 6 +/-1 degrees TRA.
(d) Do a continuity check at the applicable switch connector.
Table 501/76-11-07-993-810-F00
SWITCH CONNECTOR PINS TRA VALUE CONDITION TRANSITION
S1 D11128P 1-2 8.00-42.00
46.00-82.00
Open
Closed
44.00±2.0
2-3 8.00-42.00
46.00-82.08
Closed
Open
S2 D11130P 1-2 8.00-42.00
46.00-82.00
Not Used
44.00±2.0
2-3 8.00-42.00
46.00-82.00
Closed
Open
S3 D11130P 4-5 8.00-42.00
46.00-82.00
Not Used
44.00±2.0
5-6 8.00-42.00
46.00-82.00
Closed
Open
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
CFM56 ENGINES (CFM56-7)
76-11-07
Page 504
D633A101-ILF Oct 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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