R (1) Do the operational test of the FADEC on the ground (with engine R motoring) (Ref. AMM TASK 73-29-00-710-040).
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R 4. Fault Isolation
_______________
R A. If the test gives the maintenance message BSV(CL), J14(WRONG):
R - Verify the nameplate of the engine:

R (1) If the nameplate is for a DAC engine:
R - verify that a DAC ID plug is installed

R NOTE : The ID plug can be checked on the MCDU screen. Access

____ R reporting functions, then select the LRU Idenfication screen.
R Line 4 of the LRU Identification screen will display: R - "EGT MON" or "SAC CONFIG" for a SAC ID plug R - "DAC CONFIG" for a DAC ID plug
R (a) Replace the J14 Identification Connector (Ref. AMM TASK 73-21-90-R 000-002) (Ref. AMM TASK 73-21-90-400-002) or Do a Re-programming R of the Identification Connector (Push-pull Design only) (Ref. AMM R TASK 73-21-90-860-001).
R (2) If the nameplate is for a SAC engine:
R (a) Do a borescope inspection of the combustion chamber (Ref. AMM R TASK 72-41-00-290-001) and the high pressure turbine nozzle R assembly (Ref. AMM TASK 72-51-00-290-004).
R (b) Disconnect the cables HJ7 and HJ8 from the ECU and do a check of R the cable resistance between:
R . pins 6 and 7 (26 to 36 ohms)
R 1_ If the resistance value are in specified limits:
R - Replace the BSV (Ref. AMM TASK 73-11-70-000-001) and (Ref.
R AMM TASK 73-11-70-400-001)

R 2_ If the resistance value are out of specified limits:
R - Disconnect the cables HJ7 and HJ8 from the HMU and do a
R check of the HMU resistance between:

R . pins 6 and 7 (26 to 36 ohms)
R a_ If the resistance value are in specified limits:
R - replace harness HJ7 (Ref. AMM TASK 73-21-50-000-040)
R (Ref. AMM TASK 73-21-50-400-040) and/or harness HJ8 (Ref.
R AMM TASK 73-21-50-000-041) (Ref. AMM TASK 73-21-50-400-R 041)

R b_ If the resistance value are out of specified limits:
R - Replace HMU (Ref. AMM TASK 73-21-10-000-001) (Ref. AMM
R TASK 73-21-10-400-001)

R (3) if the fault continues, replace the ECU (4000KS) (Ref. AMM TASK 73-R 21-60-000-001) (Ref. AMM TASK 73-21-60-400-001).

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R B. Do the test given in Para. 3.A.

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R TASK 73-10-00-810-849
R Feedback Disagree on Channel A of the BSV on engine 1
R 1. Possible Causes
_______________
R - J14 Identification connector R - HJ11 harness R - CJ11R harness R - BSV R - ECU (4000KS)
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R  AMM  73-11-70-000-002 
R  AMM  73-11-70-400-002 
R  AMM  73-21-50-000-026 
R  AMM  73-21-50-000-044 
R  AMM  73-21-50-400-026 
R  AMM  73-21-50-400-044 
R  AMM  73-21-60-000-001 
R  AMM  73-21-60-400-001 
R 
R  AMM  73-21-90-000-002 
R  AMM  73-21-90-400-002 
R  AMM  73-21-90-860-001 
R 
R  AMM  73-29-00-710-040 
R 
R  ASM  73-25/18 
R  3. Fault Confirmation__________________ 

Removal of the Burner Staging Valve (BSV) Installation of the Burner Staging Valve (BSV) Removal of the CJ11R Harness Removal of the HJ11 Harness Installation of the CJ11R Harness Installation of the HJ11 Harness Removal of the Electronic Control Unit (ECU)(4000KS) Installation of the Electronic Control Unit (ECU)(4000KS) Removal of the Engine Identification Connector Installation of the Engine Identification Connector Programming of the Identification Connector (Push-Pull Design) Operational Test of the FADEC on the Ground (with Engine Motoring)
　
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