Failure of the Blue Hydraulic Pressure Transducer

TASK 27-92-00-810-823-A
Failure of the Blue Hydraulic Pressure Transducer

1. Possible Causes

HYDR. PRESSURE TRANSMITTER [2065GN]
wiring of the 28VDC signal from the pressure transducer (2065GN) to the first terminal block
wiring of the DC SIGNAL from the pressure transducer (2065GN) to the first terminal block

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 31-32-00-810-933-A	Failure of the Analog Links
ASM 279228
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)
AMM 29-10-00-863-003	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
AMM 29-10-00-864-003	Depressurize the Blue Hydraulic System
AMM 29-32-11-000-002	Removal of the Hydraulic Pressure Transducer
AMM 29-32-11-400-002	Installation of the Hydraulic Pressure Transducer

3. Fault Confirmation
Subtask 27-92-00-860-054-A

A. Job Set-Up
(1) Pressurize the Blue hydraulic system with the electric pump AMM 29-10-00-863-003.

Subtask 27-92-00-740-090-A

B. Test
(1) Do the BITE test of the EFCS (Ground Scanning) AMM 27-96-00-740-001.

4. Fault Isolation
Subtask 27-92-00-810-072-A

A. If the BITE test gives the maintenance messages:
B HYD PRESS XMTR 2065GN
with
SDAC1 B HYD PRESS XMTR 2065GN
or
SDAC2 B HYD PRESS XMTR 2065GN

do the trouble shooting procedure (Ref. TSM TASK 31-32-00-810-933) related to the ANI 4-3 analog input signal of the ELAC 2 MON and ELAC 1 MON ASM 279228.

(1) If the fault continues:

replace the HYDR. PRESSURE TRANSMITTER [2065GN] , AMM 29-32-11-000-002 and AMM 29-32-11-400-002.

(2) If the fault continues:

do a check and repair the wiring of the 28VDC signal from the pressure transducer (2065GN) to the first terminal block, ASM 279228.

(3) If the fault continues:

do a check and repair the wiring of the DC SIGNAL from the pressure transducer (2065GN) to the first terminal block, ASM 279228.

Subtask 27-92-00-740-091-A

B. Do the BITE test given in Para. 3.

5. Close-up
Subtask 27-92-00-860-055-A

A. Depressurize the Blue hydraulic system AMM 29-10-00-864-003.

[Rev.8 from Aug 2018] 2026.04.04 04:27:54 UTC