Failure of the Pedal Force Transducer Unit

TASK 27-92-00-810-836-A
Failure of the Pedal Force Transducer Unit

1. Possible Causes

FTU-RUDDER PEDAL [74CE]
C/B-RUDDER FTU [75CE]
wiring of the +28VDC signal from the pedal force transducer unit to the circuit breaker
wiring of the GND signal from the pedal force transducer unit to the ground
ground wiring of the pedal force transducer unit
wiring of the DGI 10 signal from the pedal force transducer unit to the first terminal block

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 31-32-00-810-934-A	Failure of the Digital Links
ASM 279207
AIPC 27920801
AMM 27-92-27-000-001	Removal of the Rudder Pedal Force Transducer
AMM 27-92-27-400-001	Installation of the Rudder Pedal Force Transducer
AMM 27-96-00-740-001	BITE Test of the EFCS (Ground Scanning)

3. Fault Confirmation
Subtask 27-92-00-740-118-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the BITE test of the EFCS (ground scanning) AMM 27-96-00-740-001.

4. Fault Isolation
Subtask 27-92-00-810-092-A ** ON A/C NOT FOR ALL

A. If the test confirm the fault:

(1) If the fault continues:

do the trouble shooting procedure (Ref. TSM TASK 31-32-00-810-934) related to the DGI 10 signal.

(2) If the fault continues:

(3) If the fault continues:

do a check of the wiring of the +28VDC signal from the pedal force transducer unit to the circuit breaker ASM 279207.
do a check of the wiring of the GND signal from the pedal force transducer unit to the ground ASM 279207.
do a check of the ground wiring of the pedal force transducer unit ASM 279207.
do a check and repair the wiring of the DGI 10 signal from the pedal force transducer unit to the first terminal block ASM 279207.

Subtask 27-92-00-740-119-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:27:55 UTC