(1) Operation in the Normal mode (Ref. Fig. 006) During a flight, as soon as a fault is detected by the BSCU BITE, it is sent to the CFDIU. These faults are sent in plain English in accordance with the ISO 5 encoding, through the ARINC 429 link, under the label 356.
R 1EFF : 106-149, 221-299, 401-499, 1 32-46-00Page 9 1 1 Config-2 Aug 01/05 1 1 1CES 1

 CFDIU/BSCU Interface R Figure 005
R 1EFF : 106-149, 221-299, 401-499, 1 32-46-00Page 10 1 1 Config-2 Aug 01/05 1 1 1CES 1

 Fault Message - Text Transmission to the CFDS (Label 356) from the BSCU

R  Figure 006 
R  1EFF : 106-149, 2 1 1 1CES  21-299, 401-499,  1 32111 -46-00 Config-2 Page 11 Aug 01/05

R **ON A/C 106-149, 221-299,
 (2) Transmission in the Interactive mode
R  (Ref. Fig. 007) The Interactive mode corresponds to a maintenance phase on the ground. In this mode, the computer displays a menu on the screen. The selection of the menu items is made with keys placed at level of the lines displayed on the side of the screen. The procedure is conversational. This means that the operator can call certain sub-functions of the menu (for example: self test, reminder of the last faults) and receive this information in plain language in return. The main menu is used to access following items:
 -LAST LEG REPORT
 -PREVIOUS LEGS REPORT
 -LRU IDENTIFICATION
 -GROUND SCANNING
 -TROUBLE SHOOT DATA
 -CLASS 3 FAULTS
 -SYSTEM TESTS
 -PIN-PROG SELECTION
 -GROUND REPORT
 -SPECIFIC DATA
 1EFF : 106-149, 221-299, 1 32-46-00Page 12 1 1 Config-2 Aug 01/05 1 1 1CES 1

R  BSCU - Main Menu Figure 007
 1EFF : 1 1 1CES  106-149, 221-299,  1 111 Page 1332-46-00 Config-2 Aug 01/05

R  **ON A/C 401-499, 
R  (2) Transmission in the Interactive mode 
R  (Ref. Fig. 007A) 
R  The Interactive mode corresponds to a maintenance phase on the 
R  ground. 
R  In this mode, the computer displays a menu on the screen. The 
R  selection of the menu items is made with keys placed at level of the 
R  lines displayed on the side of the screen. The procedure is 
R  conversational. This means that the operator can call certain 
R  sub-functions of the menu (for example: self test, reminder of the 
R  last faults) and receive this information in plain language in 
R  return. 
R  The main menu is used to access following items: 
R  - LAST LEG REPORT 
R  - PREVIOUS LEGS REPORT 
R  - LRU IDENTIFICATION 
R  - GROUND SCANNING 
R  - TROUBLE SHOOT DATA 
R  - CLASS 3 FAULTS 
R  - SYSTEM TESTS 
R  - GROUND REPORT 
R  - SPECIFIC DATA 

R 1EFF : 401-499, 1 32-46-00Page 14 1 1 Config-2 Aug 01/05 1 1 1CES 1

R  BSCU - Main Menu 
R  Figure 007A 
R 1EFF :  401-499,  1  32-46-00 Page 15 
1  1  Config-2 Aug 01/05
 1  1
 1CES  1

R  **ON A/C 106-149, 221-299, 401-499,
 (a) LAST LEG REPORT 
R  **ON A/C 106-149, 221-299, 
R  (Ref. Fig. 008) 
R  **ON A/C 401-499, 
R  (Ref. Fig. 008A) 
R  **ON A/C 106-149, 221-299, 401-499,
 This item presents the internal and external Class 1 fault messages detected by the braking system, that appeared during the last flight A prompt character ">" to the right of the class number indicates the presence of Trouble Shooting Data (TSD) pages associated to this fault, these pages can be accessed by pushing the line key adjacent to the prompt.
 (b) PREVIOUS LEGS REPORT 
R  **ON A/C 106-149, 221-299, 
R  (Ref. Fig. 009) 
R  **ON A/C 401-499, 
R  (Ref. Fig. 009A) 
R  **ON A/C 106-149, 221-299, 401-499,
 This item presents the internal and external Class 1 fault messages that appeared during the 64 previous flights (fault history). This is the "sum" of the LAST LEG REPORT items over several flights. 

R 1EFF : 106-149, 221-299, 401-499, 1 32-46-00Page 16 1 1 Config-2 Aug 01/05 1 1 1CES 1

 BSCU - LAST LEG REPORT R Figure 008
 1EFF : 106-149, 221-299, 1 32-46-00Page 17 1 1 Config-2 Aug 01/05 1 1 1CES 1R BSCU - LAST LEG REPORT R Figure 008A

R 1EFF : 401-499, 1 32-46-00Page 18 1 1 Config-2 Aug 01/05 1 1 1CES 1

 BSCU - PREVIOUS LEGS REPORT R Figure 009
　
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