(3) Within 10 seconds, press YES on the YDC BITE panel. Ensure that the panel displays NO FAULTS.
(a) If the YDC BITE panel does not display NO FAULTS, then press the down arrow until RESET LATCHES? is displayed. 1) Press YES. 2) When ARE YOU SURE? is displayed on the panel, press YES again. Observe
that RESET IN PROGRESS is displayed on the panel.
3) Wait 10 seconds. The YDC BITE panel will display NO FAULTS or it will display an existing fault. For the purpose of this test, it is irrelevant if a fault is displayed or not.
(4)
Press MENU. Observe EXISTING FAULTS? is displayed on the panel.
(5)
Press down arrow until GROUND TEST? is displayed on the panel.
(6)
Press YES and observe that SELF TEST? is displayed on the panel.
(7)
Press down arrow until PRGM PIN TEST? is displayed on the panel.
(8)
Press YES and observe that APL TYPE 100/200? is displayed on the panel.
NOTE: If the airplane type is not the same as the airplane you are on, the program pins are not correct. The program pins must be changed.
(9)
Press YES. Observe that CONFIRM APL type followed by 737 -100 or -200? is displayed on the panel.
(10)
Press YES. Observe that the panel displays STORING CONFIG followed by TEST PASS.
(11)
Ensure the FLT CONTROL B switch is on.
(12)
Press ON/OFF on the YDC BITE panel. Observe that TURN OFF DISPLAY? is displayed on the panel.
(13)
Press YES and pause 15 seconds. Observe DISPLAY OFF is temporarily displayed followed by the panel blanking. Observe the AUTOPILOT DISENGAGE WARNING lights are not illuminated.
(14)
Press ON/OFF. Observe that ENTER BITE? is displayed on the panel.
(15)
Within 10 seconds, press YES. Observe that PLEASE WAIT is temporarily displayed followed by EXISTING FAULTS? on the YDC BITE panel. Observe the AUTOPILOT DISENGAGE WARNING lights illuminate steadily.
(16)
Press down arrow until GROUND TESTS? is displayed on the panel.
(17)
Press YES and observe that SELF TEST? is displayed on the panel.
(18)
Station an observer facing the tail to monitor rudder deflection.
(19)
Press YES on the YDC BITE panel. Observe that WARNING! WARNING!, then RUDDER MOVEMENT, then RUDDER CLEARED? displays on the panel.
WARNING: ENSURE PERSONNEL ARE CLEAR OF RUDDER PRIOR TO PERFORMING THESE STEPS. DEATH OR INJURY TO PERSONNEL MAY RESULT.
(20)
Press YES. Observe that YD ENGA SW ON? is displayed on the panel.
(21)
Engage the Yaw Damper Engage switch and observe that the Yaw Damper indicator light extinguishes within 3 seconds.
(22)
Press YES on the YDC BITE panel and observe that the panel displays TEST IN PROGRESS followed by TEST PASS after 70-150 seconds.
(23)
Press ON/OFF on the YDC BITE panel. Observe that TURN OFF DISPLAY? is displayed on the panel.
(24)
Press YES and pause 15 seconds. Observe that DISPLAY OFF is temporarily displayed followed by the panel blanking. Observe the AUTOPILOT DISENGAGE WARNING lights are not illuminated.
NOTE: TEST IN PROGRESS is displayed on the YDC BITE panel and the AUTOPILOT DISENGAGE WARNING lights flash off and on during this test.
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May 01/00
C. Servo Test
(1)
For aircraft prior to L/N 213 not incorporating SB 737-22-1009, disengage the Yaw Damper.
(2)
Position FLT CONTROL B switch to OFF. Observe that YAW DAMPER engage switch is in the OFF position and the YAW DAMPER warning light, the FLT CONT annunciator light, and both MASTER CAUTION lights illuminate.
(3)
Press either MASTER CAUTION light. Press ON/OFF on the YDC BITE panel. Observe that ENTER BITE? is displayed on the panel.
(4)
Within 10 seconds, press YES.
(5)
Observe that PLEASE WAIT is temporarily displayed followed by EXISTING FAULTS? on the panel. Observe the AUTOPILOT DISENGAGE WARNING lights illuminate steadily.
(6)
Press down arrow until GROUND TESTS? is displayed on the panel.
(7)
Press YES. Observe that SELF TEST? is displayed on the panel.
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