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the A/T circuit breakers. The CTM/POR test is used to test this
function.
You select the CTM/POR test from the INTERACTIVE test menu
when you push LSK 4L. The CTM/POR page lets you do the test
of the A/T cycle time monitor (CTM) and power on reset
functions (POR).
The first page shows general instructions for the CTM/POR
tests.
Push LSK 6R to start the test. After the test, the CDU displays the
test result.
THROTTLE TESTS Page
You select the THROTTLE TESTS page from the INTERACTIVE
test menu when you push LSK 5L. The THROTTLE TESTS page
lets you do interactive tests to check the thrust lever
performance.
The first page shows test set-up instructions and a menu of the
available throttle tests. These are the throttle tests that are
available:
* Servo Motor test
* Range Check
* Torque Test
The Servo Motor Test and Torque Test check the servo motors
and the torque of the gearbox friction brakes. These tests cause
the A/T to drive the throttles through their full range of motion
from the aft stops to the forward stops and back again to the aft
stops. At the end of the test, servo motor faults will be displayed
with a diagnostic code. During the test the torque values applied
by the gearbox friction brakes are measured by the servo
motors and sent to the A/T for display on the BITE page.
The Range Check requires operator interaction. During this test
you move the throttles through their full range of motion, while
observing the range values and limits on the FMC CDU.
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SERVO MOTOR TEST Page
Push LSK 2L to select the SERVO MOTOR TESTS page from the
THROTTLE TESTS menu. The SERVO MOTOR TESTS page
shows any failures of servo motor 1 or 2.
Page 1 shows the initial test instructions. Push LSK 6R to
continue the test.
Page 2 can show one of these messages:
* NO FAULTS
* A fault message
* THRUST LEVERS NOT AT IDLE.
If THRUST LEVERS NOT AT IDLE shows, move the levers to the
idle position and push LSK 6R to continue the test.
TORQUE TESTS Page
Push LSK 4L to select the TORQUE TESTS page from the
THROTTLE TESTS menu. The TORQUE TESTS page lets you do
a check of the servo torque output.
Page 1 shows the initial test instructions. Push LSK 6R to
continue the test.
The thrust levers go fully forward until the clutch slips, then back
to the aft stop. Page 2 shows the average torque while in test.
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RANGE CHECK Page
The RANGE CHECK page lets you monitor the thrust lever
position as you move the thrust levers.
TORQUE TESTS Page
You select the TORQUE TESTS page from the THROTTLE
TESTS menu when you push LSK 4L. The TORQUE TESTS page
lets you do a check of the servo torque output.
Page 1 shows the initial test instructions. Push LSK 6R to
continue the test.
The thrust levers go fully forward until the clutch slips, then back
to the aft stop. Page 2 shows the average torque while in the
test.
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