R  AMM 27-23-51-400-001 Installation of the Rudder Travel-Limitation Unit 4CC ASM 22-67/01
 3. Fault Confirmation
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 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AUTO FLT/FAC1/28VDC 5CC1 B04
 B. Test
 (1) Do the operational test of the AFS (Ref. AMM TASK 22-96-00-710-001) and read the result for the FAC 1.
 (a) If the circuit breaker 5CC1 is open refer to Para. 4.B.
 「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 ∞∞22-66-00∞∞∞∞∞∞∞∞∞∞Page 201
 Aug 01/05 CES

 4. Fault Isolation
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 A. If the circuit breaker 5CC1 is closed, and if the test gives the
 maintenance message AFS: FAC1:

 - do a check for 28VDC at the FAC 1 (1CC1).
 (1) If there is 28VDC:

 - replace the FAC-1 (1CC1), (Ref. AMM TASK 22-66-34-000-002) and (Ref. AMM TASK 22-66-34-400-002).

 (2) If there is no 28VDC:

 - do a check of the wiring of the 28VDC signal from the circuit breaker (5CC1) to the FAC 1 (1CC1).

 - do a check of the wiring of the ground signal at the FAC 1 (1CC1) pin AA/3. (Ref. ASM 22-67/01).

 (a) If there is no continuity:

 - repair the above wirings.

 (b) If there is continuity:

 - replace the C/B-AUTO FLT/FAC 1/28VDC (5CC1).
 B. If the circuit breaker 5CC1 is open:
 - close this circuit breaker.
 (1) If this circuit breaker opens again:
 - disconnect these three units:
 LIMITATION UNIT-RUDDER TRAVEL (4CC)
 ACTUATOR-RUDDER TRIM (10CC)
 FAC-1 (1CC1)

 - close the circuit breaker 5CC1.

 (a) If this circuit breaker stays closed:

 - connect the units one by one until the circuit breaker 5CC1 opens again

 - replace the related unit: for LRU 4CC: (Ref. AMM TASK 27-23-51-000-001) and (Ref. AMM TASK 27-23-51-400-001) for LRU 10CC: (Ref. AMM TASK 27-22-51-000-001) and (Ref. AMM TASK 27-22-51-400-001) for LRU 1CC1: (Ref. AMM TASK 22-66-34-000-002) and (Ref. AMM TASK 22-66-34-400-002).

 (b) If this circuit breaker opens again:

 - do a check for a short to ground between the circuit breaker 5CC1 and the three units, (Ref. ASM 22-67/01).
 1 If there is a short to ground:
_ - repair the related wiring.
 「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 ∞∞22-66-00∞∞∞∞∞∞∞∞∞∞Page 202
 Feb 01/98 CES

_
 - replace the C/B-AUTO FLT /FAC 1/28VDC (5CC1).
 (2) Connect all the units.
 C. Do the test given in Para. 3.

 Failure of the FAC 2
 1. Possible Causes
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 - FAC-2 (1CC2)

 - LIMITATION UNIT-RUDDER TRAVEL (4CC)

 - ACTUATOR-RUDDER TRIM (10CC)

 - wiring of the 28VDC signal from the circuit breaker (5CC2) to the FAC 2 (1CC2)

 - wiring of the ground signal at the FAC 2 (1CC2)

 - C/B-AUTO FLT/FAC 2/28VDC (5CC2)

 - short to ground between the circuit breaker 5CC2 and the three units