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757 MAINTENANCE MANUAL
(2) S 865-375Push and hold the test button on the L ADC.
NOTE:____ When you push the test button on the ADC, the ADC will send a self-test signal and a failure signal to the YDM. The failure signal is stored by the YDM as a fault message that can be viewed when you push the YDM's DISPLAY button.
(3) S 985-273Push the DISPLAY button on the left YAW DAMPER module.
(4) S 285-274Make sure that this message is shown on the left YAW DAMPER module fault display: (a) L ADC
(5) S 985-275Push the DISPLAY button on the right YAW DAMPER module.
(6) S 285-276Make sure that this message is shown on the right yaw damper module fault display: (a) L ADC
(7) S 985-277Release the test button on the L ADC.
(8) S 985-278Push the DISPLAY button on the left YAW DAMPER module.
(9) S 285-279Make sure that these fault messages are not shown on the left yaw damper module fault display: (a) L ADC
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757
MAINTENANCE MANUAL
(b) R ADC
S 985-280
(10)
Push the DISPLAY button on the right YAW DAMPER module.
S 285-281
(11)
Make sure that these fault messages are not shown on the right yaw damper module fault display:
(a)
L ADC
(b)
R ADC
S 985-282
(12)
Push and hold the test button on the R ADC.
S 985-283
(13)
Push the DISPLAY button on the left YAW DAMPER module.
S 285-284
(14)
Make sure that this message is shown on the left yaw damper module fault display:
(a) R ADC
S 865-376
(15)
Push the DISPLAY button on the right YAW DAMPER module.
S 285-285
(16)
Make sure that this message is shown on the right yaw damper module fault display:
(a) R ADC
(17)
Release the test button on the R ADC.
(18)
Push the DISPLAY button on the left YAW DAMPER module.
S 985-286
S 985-287
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757 MAINTENANCE MANUAL
S 285-288
(19) Make sure that these fault messages are not shown on the left yaw damper module fault display:
(a)
L ADC
(b)
R ADC
S 985-290
(20)
Push the DISPLAY button on the right YAW DAMPER module.
S 285-289
(21)
Make sure that these fault messages are not shown on the right yaw damper module fault display:
(a)
L ADC
(b)
R ADC
L. Inertial Reference Unit (IRU) Interface Test
NOTE: When you push the TEST button on the IRU, the IRU starts a 10
____ second self-test. The yaw damper response to this is to store a fault message that can be shown on the fault YDM's display.
S 985-291
(1)
Push and release the TEST button on front of the left IRU.
S 985-292
(2)
Stop for a minimum of 5 seconds, then push the DISPLAY button on the left YAW DAMPER module.
S 285-293
(3)
Make sure that this message is shown on the left yaw damper module fault display:
(a) L IRU
(4)
Push the DISPLAY button on the right YAW DAMPER module.
S 985-294
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