Loss of the FQI Output Buses by the DMC 2
1. Possible Causes
_______________
- FQIC (3QT)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
31-63-00-810-938 Loss of the FQI 1 Output Bus by the DMC 2 31-63-00-810-939 Loss of the FQI 2 Output Bus by the DMC 2 AMM 28-42-34-000-001 Removal of the Fuel Quantity-Indicating Computer
(FQIC) (3QT) AMM 28-42-34-400-001 Installation of the Fuel Quantity-Indicating Computer (FQIC) (3QT) AMM 31-60-00-740-007 GROUND SCANNING Test of the DMC
3. Fault Confirmation
__________________
A. Test Do the Ground Scanning Test of the DMC (Ref. AMM TASK 31-60-00-740-007).
4. Fault Isolation
_______________
A. If the test gives the maintenance message FQI(3QT):
- Do the fault isolation (Para.4. A.) of the procedures (Ref. TASK 31-63-00-810-938) (Ref. TASK 31-63-00-810-939)
(1) If the fault continues:
- replace the FQIC (3QT) (Ref. AMM TASK 28-42-34-000-001) and (Ref. AMM TASK 28-42-34-400-001).
B. Do the test given in Para. 3.A.
Loss of the FQI Output Buses by the DMC 3
1. Possible Causes
_______________
- FQIC (3QT)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
31-63-00-810-920 Loss of the FQI 1 Output Bus by the DMC 3 31-63-00-810-921 Loss of the FQI 2 Output Bus by the DMC 3 AMM 28-42-34-000-001 Removal of the Fuel Quantity-Indicating Computer
(FQIC) (3QT) AMM 28-42-34-400-001 Installation of the Fuel Quantity-Indicating Computer (FQIC) (3QT) AMM 31-60-00-740-007 GROUND SCANNING Test of the DMC
3. Fault Confirmation
__________________
A. Test Do the Ground Scanning Test of the DMC (Ref. AMM TASK 31-60-00-740-007).
4. Fault Isolation
_______________
A. If the test gives the maintenance message FQI(3QT):
- Do the fault isolation (Para.4. A.) of the procedures (Ref. TASK 31-63-00-810-920) (Ref. TASK 31-63-00-810-921)
(1) If the fault continues:
- replace the FQIC (3QT) (Ref. AMM TASK 28-42-34-000-001) and (Ref. AMM TASK 28-42-34-400-001).
B. Do the test given in Para. 3.A.
Loss of the FCU 1 Channel A Output Bus by DMC 2
1. Possible Causes
_______________
- DMC-2 (1WT2)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-60-00-740-004 EIS System Test
AMM 31-63-34-000-001 Removal of the DMC (1WT1,1WT2,1WT3)
AMM 31-63-34-400-001 Installation of the DMC (1WT1,1WT2,1WT3)
ASM 31-62/01
3. Fault Confirmation
__________________
A. Test
Do the EIS system test (Ref. AMM TASK 31-60-00-740-004).
4. Fault Isolation
_______________
A. If the test gives the maintenance message FCU1(2CA)BUS FCU1A/DMC2(1WT2):
- replace the DMC-2 (1WT2) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
(1) If the fault continues:
- do a check and repair the wiring from the DMC 2 (1WT2) pins AA/6A, 6B to the first terminal block (Ref. ASM 31-62/01).
5. Close-up
________
A. Do the test given in Para. 3.B.
Loss of the FCU 1 Channel B Output Bus by DMC 2
1. Possible Causes
_______________
- DMC-2 (1WT2)
- wiring
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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