R a_ If there is a GND connection:
R - repair the wiring as necessary.

R (2) If the ELEC PUMP-B (2075GJ) does not operate:
R - do a check of the red indicator light on the DET-PHASE UNBALANCE, B
R ELEC PUMP (2707GJ).

R (a) If the red indicator light is on:

R WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL

_______ R SURFACES ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A R HYDRAULIC SYSTEM.
R - put the BLUE ELEC PUMP P/BSW (2704GJ) on panel 40VU in the OFF
R position ( OFF light is on and the red indicator light on the
R DET-PHASE UNBALANCE, B ELEC PUMP (2707GJ) goes off),
R - put the BLUE ELEC PUMP P/BSW (2704GJ) in the AUTO position (OFF
R light goes off),
R - put the BLUE PUMP OVRD P/BSW (2703GJ) on panel 50VU in the ON
R postion
R - look on the SD - DU and examine if the ELEC PUMP-B (2075GJ)
R operates:

R 1_ If the ELEC PUMP-B (2075GJ) does not operate and the red
R indicator light DET-PHASE UNBALANCE, B ELEC PUMP (2707GJ)
R comes on again:
R - replace the ELEC PUMP-B (2075GJ) (Ref. AMM TASK 29-12-51-R 000-001) and (Ref. AMM TASK 29-12-51-400-001).

R NOTE : Replace the ELEC PUMP-B (2075GJ) with the ELEC PUMP-Y

____ R (3075GX) which is interchangeable, if a new pump is not R available (Ref. AMM TASK 29-24-51-000-001) and (Ref. R AMM TASK 29-24-51-400-001).
R 2_ If the ELEC PUMP-B (2075GJ) operates at normal pressure and
R the red indicator light on the DET-PHASE UNBALANCE, B ELEC
R PUMP (2707GJ) does not come on:
R - no further actions are necessary.

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 May 01/05 CES

R  (b) If the red indicator light is not on: 
R  - do a check for 115VAC between: 
R  the ELEC PUMP-B (2075GJ) connectors A/G and A/A, A/B, A/C. 
R  1_  If there are 115VAC:
R  - replace the ELEC PUMP-B (2075GJ) (Ref. AMM TASK 29-12-51-
R  000-001) and (Ref. AMM TASK 29-12-51-400-001). 
R  NOTE : Replace the ELEC PUMP-B (2075GJ) with the ELEC PUMP-Y____ 
R  (3075GX) which is interchangeable, if a new pump is not 
R  available (Ref. AMM TASK 29-24-51-000-001) and (Ref. 
R  AMM TASK 29-24-51-400-001). 
R  2_  If there are no 115VAC:
R  - do a check for 28VDC between the DET-PHASE UNBALANCE, B ELEC 
R  PUMP (2707GJ) connectors A/G and A/F. 
R  a_  If there are 28VDC:
R  - replace the CT-B ELEC PUMP (2706GJ) (Ref. AMM TASK 29-12-
R  15-000-001) and (Ref. AMM TASK 29-12-15-400-001). 
R  b_  If the fault continues:
R  - replace the DET-PHASE UNBALANCE, B ELEC PUMP (2707GJ) 
R  (Ref. AMM TASK 29-12-18-000-001) and (Ref. AMM TASK 29-
R  12-18-400-001). 
R  c_  If the fault continues:
R  - do a check of the wiring between: 
R  ELEC PUMP-B (2075GJ) connectors A/A, A/B and A/C and CB 
R  (2701GJ) and repair as necessary. 
R  d_  If there are no 28VDC:
R  - do a check of the wiring between: DET-PHASE UNBALANCE, B 
R  ELEC PUMP (2707GJ) connector A/F and CB (2702GJ) and 
R  repair as necessary. 
R
 B. If the HYD B ELEC PUMP LO PRESS warning was shown for a short time during
 the fault confirmation with engines running:
 - Replace the RELAY-N2 SPEED CONDTN (2709GJ).
 C. Do the test as given in Para. 3. A. or 3. B. to make sure that operation
 is correct.

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 May 01/05 CES

 TASK 29-12-00-810-805

 Loss of the System Pressure of the Blue Hydraulic System
 1. Possible Causes
_______________

 - PRESS SW-FLT CTL, B (2151GN)

 - SOL VALVE-LEAKAGE MEAS, B (2150GP)

 - pushbutton switch 1884GP

 - wiring

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