3.  Perform BITE Trouble Shooting
A.  Perform system initialize steps as listed on PDC CDU and provide requested responses thru CDU.
B.  Refer to paragraphs 5 thru 25 for reference list of tests corresponding to test selected. Refer to paragraph 26 for BITE data readouts which may be displayed for added information.
NOTE:  The approximate total times listed in par. 6 thru 25 include time to initialize and exit BITE. BITE initialization requires approximately 20 seconds for nonsurface and surface tests and 15 seconds to exit BITE from either test.
C.  A failure during BITE is indicated by a TEST FAILED display immediately after the failed subtest. The operator may select diagnostics or push ENG to continue BITE until all subtests are completed. TEST FAILED message is then repeated and pressing ENG will select diagnostics. Diagnostic readout will provide LRU identification for failed steps.
NOTE:  When a failure is indicated for any nonsurface test, BITE will not enter a surface test. In ground functional test only, nonsurface and surface tests can be bypassed individually allowing the operator the choice of single tests or a combination of tests.
NOTE:  Surface test BITE failure for aileron or elevator may be due to faulty shear rivets in the actuator lever arm assemblies. Refer to actuator R/I, 22-11-251 or 22-11-261.
D.  Replace component(s) as indicated and repeat BITE test for system replacement verification.
E.  To exit BITE, page PDC CDU away from page 5-5 or select PDC mode switch to position other than STBY.
F.  At the completion of trouble shooting, exit BITE, remove hydraulic power and remove electrical power if no longer required.
5C9 
22-11-01 Page 104  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Jun 20/84 

4. BITE Test Group Summary Chart
APPROX TEST TIME, MINUTES DISPLAY TEST GROUP NO SURFACE SURFACE TEST PARA. REF
SYMPTOM/PIREP  1  -- -- No Test 
GROUND FUNCT  2  17.0  7.6 
VERIFICATION  3  -- -- No Test 
AUTOPILOT  4  -- -- No Test 
FLIGHT DIR  5  9.0  1.0  6 
A/T INTERFACE  6  2.4  0  7 
ALT ALERT  7  3.0  0  8 
ENG INTLKS  8  2.4  0  9 
APPROACH  9  8.5  5.9  10 
STAB TRIM  10  1.0  2.6  11 
PITCH A/P  11  -- -- No Test 
ROLL A/P  12  -- -- No Test 
ALTITUDE  13  3.5  2.3  12 
VERT SPEED  14  3.4  2.6  13 
SPEED/LVL CHG  15  3.0  2.6  14 
PITCH CWS  16  1.7  2.3  15 
HEADING  17  3.6  .8  16 
VOR  18  4.6  .8  17 
ROLL CWS  19  2.8  .8  18 
LRU INTERFACE  20  -- -- No Test 
RIGGING  21  19 
MACH/AS  22  1.0  0  20 
MCP INTERFACE  23  2.5  0  20 

May 20/82 22-11-01 Page 105 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

4. BITE Test Group Summary Chart (Cont)
APPROX TEST TIME, MINUTES DISPLAY  TEST GROUP NO SURFACE SURFACE TEST PARA. REF ADI 24 1.0 0 20 FCC INTERFACE 25 5.4 0 20 DADC, ALP VANE 26 .6 0 20 VG, LRRA, ACCEL 27 .6 0 20 HSI 28 1.2 0 20 VOR/ILS RCVR, DME 29 1.0 0 20 COMPASS 30 .8 0 20 FLT MODE ANN 31 1.5 0 20 MINI LAND 32 .3 5.2 21 FULL LAND 33 16.4 10.8 22 ALL PITCH 34 ----23 ALL ROLL 35 ----24 OMEGA   36 ----  25
*[1] GROUND FUNCTIONAL TEST IN SYSTEM ADJUSTMENT/TEST
5C9 
22-11-01 Page 106  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Jun 20/83 

5.  BITE Test Library Chart LIBRARY TEST (REF) TITLE
 1.  
INITIAL STATE OF DISCRETE INPUTS

 2.  
ADI F/D AND VALID FLAG

 3.  
MASI BUG

 4.  
D/A CONVERTERS

5.  
A/P CWS ENGAGE INTLKS

6.  
A/P ENGAGE INTLKS

7.  
A/P DISENGAGE AND WARNING (BA, LH)

 8.  
DME

9.  
NAV RECEIVER INTERFACE

10.  
SINGLE CHANNEL APP LOGIC

11.  
DUAL APPROACH

12.  
A/T INTERFACE

13.  
ARINC 429 DADC SERIAL DATA

14.  
ARINC 429 MCP SERIAL DATA

15.  
RIGGING

16.  
CROSS-CHANNEL XMIT/RCVR

17.  
VG INTERFACES

18.  
COMPASS INTERFACES
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：737 AMM 飛機維護手冊 AUTO FLIGHT 自動飛行 1(79)