(b) If the impedance is correct:
 - do a check of the impedance of the RUD TR ACT PWR ON signal R between the pin AE/11C of the FAC-2 rack connector and the R ground point DC2 (Ref. AWM 22-68-04).
 NOTE : The impedance must be more than 70 Ohms.
____
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 Feb 01/05 CES 1 If the impedance is not correct:

_
 - do a check of the correct continuity of the wiring of the RUD TR ACT PWR ON signal from the FAC2 to the relay 7CC2 (Ref. ASM 22-68/03)
R  a_  If there is continuity:
R
 - replace the RELAY-RUD TRIM 2 (7CC2)
 - install the above removed FAC-2 (Ref. AMM TASK 22-66-34-
400-002). 

R b_ If there is no continuity:R
 - repair the wiring

 - install the above removed FAC-2 (Ref. AMM TASK 22-66-34-400-002)

 2 If the impedance is correct:
_
 - do a check of the correct continuity of the wiring of the 28VDC signal from the relay 7CC2 to the RT actuator (10CC) and associted GND at RT actuator (Ref. ASM 22-68/03).
R a_ If there is continuity:R
 - replace the relay 7CC2.
R b_ If the fault continues:R
 - replace the FAC-2 (1CC2) (Ref. AMM TASK 22-66-34-400-002).
R (2) If the fault continues: R
 - do a check and repair the remaining wiring from the FAC 2 (1CC2) to the rudder trim actuator (10CC) (Ref. ASM 22-68/03).
 B. If the test does not give the maintenance message AFS: FAC2/RT ACTR 10CC:
 - do the operational test of the rudder trim function (Ref. AMM TASK 22-62-00-710-001).
 C. If the rudder does not move or stops before the rudder travel limit:
 - replace the FAC-2 (1CC2) (Ref. AMM TASK 22-66-34-000-002) and (Ref. AMM TASK 22-66-34-400-002).
R (1) If the fault continues:
R
R - replace the electronic module of the rudder trim actuator (10CC)
R (Ref. AMM TASK 27-22-51-000-002) and (Ref. AMM TASK 27-22-51-400-R 002).

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 May 01/98 CES

R  (a) If the fault continues: - replace the rudder trim actuator (10CC) (Ref. AMM TASK 27-22-51-000-001) and (Ref. AMM TASK 27-22-51-400-001). 
R R (2) If the fault continues: - do a check and repair the wiring of the RUD TR V1 and RUD TR V2 discretes from the rudder trim actuator (10CC) to the FAC 2 (1CC2) (Ref. ASM 22-68/03).
 D. Do the test given in Para. 4.B.

 Loss of the Power Supply 26VAC of the Rudder Trim Side 1
 1. Possible Causes_______________
R R R R R R  - ACTUATOR-RUDDER TRIM (10CC) - electronic module - wirings of the 26VAC signal (from the rudder trim actuator (10CC) pin A/G and pin B/A to the first terminal block) - wirings of the ground signal at rudder trim actuator (10CC) pin A/H and pin B/B 
2. Job Set-up Information______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------

AMM  22-91-00-710-001 
AMM  27-22-51-000-001 
R  AMM  27-22-51-000-002 
R 
AMM  27-22-51-400-001 
R  AMM  27-22-51-400-002 
R 
ASM  22-67/01

 3. Fault Confirmation
__________________
 A. Test
Ground Scanning of the AFS
Removal of the Rudder Trim Actuator (10CC)
Removal of the Electronic Assembly of the Rudder Trim
Actuator (10CC)
Installation of the Rudder Trim Actuator (10CC)
Installation of the Electronic Assembly of the Rudder
Trim Actuator (10CC)

 (1) Do the Ground Scanning of the AFS (Ref. AMM TASK 22-91-00-710-001).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message AFS: 431 XPA BUS BAR: R - replace the electronic module of the rudder trim actuator (10CC) (Ref. R AMM TASK 27-22-51-000-002) and (Ref. AMM TASK 27-22-51-400-002).
R (1) If the fault continues:
 - replace the ACTUATOR-RUDDER TRIM (10CC), (Ref. AMM TASK 27-22-51-000-001) and (Ref. AMM TASK 27-22-51-400-001).
R (2) If the fault continues: R
 - do a check of the wirings of the 26VAC signal (from the rudder trim actuator (10CC) pin A/G and pin B/A to the first terminal block), (Ref. ASM 22-67/01).
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