Loss of the Signal between the DLRB and the DLS
 1. Possible Causes
_______________
 - ROUTING BOX-DATA LOADING (102TD)

 - SELECTOR-DATA LOADING (101TD)

 - MDDU (1TD)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 31-38-21-000-001 Removal of the Data Loading Selector (101TD)
 AMM 31-38-21-400-001 Installation of the Data Loading Selector (101TD)
 AMM 31-38-34-000-001 Removal of the Data Loading Routing Box (102TD)
 AMM 31-38-34-400-001 Installation of the Data Loading Routing Box (102TD)
 ASM 31-38/01

 3. Fault Confirmation

__________________
 A. Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the fault is identified by the crew observation: UP-LOADING ERROR indication on the display of the Data Loading Selector
 (1) if the fault continues:

 - replace the ROUTING BOX-DATA LOADING (102TD) (Ref. AMM TASK 31-38-34-000-001) and (Ref. AMM TASK 31-38-34-400-001).

 (2) if the fault continues:

 - replace the SELECTOR-DATA LOADING (101TD) (Ref. AMM TASK 31-38-21-000-001) and (Ref. AMM TASK 31-38-21-400-001).

 (3) Do a check for of the aircraft wiring between the ROUTING BOX-DATA LOADING (102TD) and MDDU (1TD) (Ref. ASM 31-38/01):

 (a) pin B/19, 35 (102TD) to pin A/1, 2 (1TD).

 (b) pin B/18, 34 (102TD) to pin A/8, 9 (1TD).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 062-099, 106-149, 151-199, 201-299, ∞∞31-38-00∞∞∞∞∞∞∞∞∞∞Page 213
 301-399, 401-499, Aug 01/05 CES

 (c) pin B/2 (102TD) to pin A/18 (1TD).

 (d) pin B/23 (102TD) to pin A/50 (1TD).

 (e) pin B/22 (102TD) to pin A/51 (1TD).

 (f) pin B/21 (102TD) to pin A/52 (1TD).

 (g) pin B/20 (102TD) to pin A/53 (1TD).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 062-099, 106-149, 151-199, 201-299, ∞∞31-38-00∞∞∞∞∞∞∞∞∞∞Page 214
 301-399, 401-499, Aug 01/05 CES

 Internal Failure of the DLRB
 1. Possible Causes
_______________
 - ROUTING BOX-DATA LOADING (102TD)

 - CFDIU (1TW)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 31-38-00-740-001 BITE Test of the Data Loading Routing Box (DLRB) AMM 31-38-34-000-001 Removal of the Data Loading Routing Box (102TD) AMM 31-38-34-400-001 Installation of the Data Loading Routing Box (102TD) ASM 31-38/01
 3. Fault Confirmation
__________________
 A. Do the BITE Test of the DLRB (Ref. AMM TASK 31-38-00-740-001).
 4. Fault Isolation
_______________
 A. If the test gives the message:
 - DLRB(102TD)/DLS(101TD)
 (1) replace the ROUTING BOX-DATA LOADING (102TD) (Ref. AMM TASK 31-38-34-000-001) and (Ref. AMM TASK 31-38-34-400-001).

 (2) If the fault continues:

 Do a check for of the aircraft wiring between the ROUTING BOX-DATA LOADING (102TD) and CFDIU (1TW) (Ref. ASM 31-38/01):
 (a) pin B/3 (102TD) to pin AA/7A (1TW).

 (b) pin A/44 (102TD) to pin AB/11K (1TW).

 (c) pin B/4 (102TD) to pin AA/9A (1TW).

 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 062-099, 106-149, 151-199, 201-299, ∞∞31-38-00∞∞∞∞∞∞∞∞∞∞Page 215
 301-399, 401-499, Aug 01/05 CES Loss of the DLRB Signal to the ATSU

 1. Possible Causes
_______________
 - MDDU (1TD)

 - ATSU (1TX1)

 - ROUTING BOX-DATA LOADING (102TD)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
　
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