R R (a) If there is no continuity: - repair the above wiring.
R R (b) If there is continuity: - do a check and repair the wiring of the ground signal at the rudder travel-limitation unit (4CC) pin B/V (Ref. ASM 22-67/01).
B. Do the test given in Para. 3.
Loss of Power Supply 26VAC of the Position Feedback Transducers Side 1
1. Possible Causes
_______________
- LIMITATION UNIT-RUDDER TRAVEL (4CC)
- ACTUATOR-RUDDER TRIM (10CC)
- SERVO ACTR-YAW DAMPER, 1 (3CC1)
- XDCR UNIT-YAW DAMPER POS (2CC)
- wiring of the 26VAC signal from the circuit breaker 14CC1 to the first terminal block
- C/B-AUTO FLT/FAC 1/26VAC (14CC1) R - electronic module
- short to ground between the circuit breaker 14CC1 and the four units
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 22-91-00-710-001 Ground Scanning of the AFS
AMM 27-22-51-000-001 Removal of the Rudder Trim Actuator (10CC) R AMM 27-22-51-000-002 Removal of the Electronic Assembly of the Rudder Trim R Actuator (10CC)
AMM 27-22-51-400-001 Installation of the Rudder Trim Actuator (10CC) R AMM 27-22-51-400-002 Installation of the Electronic Assembly of the Rudder R Trim Actuator (10CC)
AMM 27-23-51-000-001 Removal of the Rudder Travel Limitation Unit 4CC R AMM 27-23-51-000-002 Removal of the Electronic Module of the Rudder Travel R Limitation Unit
AMM 27-23-51-400-001 Installation of the Rudder Travel Limitation Unit 4CC R AMM 27-23-51-400-002 Installation of the Electronic Module of the Rudder R Travel Limitation Unit
AMM 27-26-17-000-001 Removal of the Yaw Damper Position Transducer Unit 2CC AMM 27-26-17-400-001 Installation of the Yaw Damper Position Transducer Unit 2CC AMM 27-26-51-000-001 Removal of the Yaw Damper Servo Actuator (3CC1) and (3CC2) AMM 27-26-51-400-001 Installation of the Yaw Damper Servo Actuator (3CC1) and (3CC2) ASM 22-67/01
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞22-61-00∞∞∞∞∞∞∞∞∞∞Page 217
May 01/98 CES
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AUTO FLT/FAC1/26VAC 14CC1 B03
B. Test
(1) Do the Ground Scanning of the AFS (Ref. AMM TASK 22-91-00-710-001).
(a) If the circuit breaker 14CC1 is open, refer to Para. 4.B.
4. Fault Isolation
_______________
A. If the circuit breaker 14CC1 is closed, and if the test gives the maintenance message AFS: 431 XPA BUS BAR:
- do a check of the wiring of the 26VAC signal from the circuit breaker 14CC1 to the first terminal block, (Ref. ASM 22-67/01).
(1) If there is no continuity:
- repair the above wiring.
(2) If there is continuity:
- replace the C/B-AUTO FLT/FAC 1/26VAC (14CC1).
B. If the circuit breaker 14CC1 is open:
- close this circuit breaker.
(1) If this circuit breaker opens again:
- disconnect these four units:
LIMITATION UNIT-RUDDER TRAVEL (4CC)
ACTUATOR-RUDDER TRIM (10CC)
SERVO ACTR-YAW DAMPER, 1 (3CC1)
XDCR UNIT-YAW DAMPER POS (2CC)
- close the circuit breaker 14CC1.
(a) If this circuit breaker stays closed:
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