- do a check of the impedance between the pins AB/13G and AB/2G of the FAC-1 rack connector.
NOTE : The impedance must be lower than 10 Ohms.
____
(1) If the impedance is correct:
- replace the FAC-1 (1CC1) (Ref. AMM TASK 22-66-34-400-002)
(2) If the impedance is not correct:
- do a check of the wiring between: . the pin AB/13G of the FAC-1 (1CC1) and the pin A/D3 of the FLT CTL/FAC pushbutton switch (12CC1) . the pin A/D1 of the FLT CTL/FAC pushbutton switch (12CC1) and the pin AB/2G of the FAC-1 (1CC1).
(a) If there is no continuity:
- repair the above wiring.
(b) If there is continuity:
- replace the P/BSW - FLT CTL/FAC 1 (12CC1).
- install the above removed FAC-1 (Ref. AMM TASK 22-66-34-400-002).
B. Do the test given in para. 3.
「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 A217
May 01/04R CES
Loss of Yaw Damper and Rudder Trim and Rudder Travel Limitation Functions on the FAC 2
1. Possible Causes
_______________
- FAC-2 (1CC2)
- wiring
- P/BSW - FLT CTL/FAC 2 (12CC2)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 22-66-34-000-002 Removal of the FAC (1CC1,1CC2)
AMM 22-66-34-400-002 Installation of the FAC (1CC1,1CC2)
AMM 22-96-00-710-001 Operational Test of the AFS
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power AMM 29-10-00-863-003 Pressurize the Blue Hydraulic System with a Ground Power Supply
AMM 29-23-00-863-001 Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
AMM 29-24-00-863-001 Pressurize the Yellow Hydraulic System with the
Electric Pump
3. Fault Confirmation
__________________
A. Job Set-Up
(1) Aircraft Maintenance Configuration
(a) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(b) Pressurize the aircraft hydraulic systems (Ref. AMM TASK 29-23-00-863-001), (Ref. AMM TASK 29-24-00-863-001) and (Ref. AMM TASK 29-10-00-863-003).
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU AUTO FLT/FAC2/28VDC 5CC2 M19
May 01/04R CES
C. Test
(1) Open the circuit breaker 5CC2 for more than 5 seconds.
(2) After 10 seconds, close the circuit breaker 5CC2.
(3) After 2 minutes, do the operational test of the AFS (Ref. AMM TASK 22-96-00-710-001) and read the result for the FAC 2.
4. Fault Isolation
_______________
A. If the test gives the maintenance message AFS: FAC2/P-B SW 12CC2:
- open the circuit breaker 5CC2
- remove the FAC-2 (Ref. AMM TASK 22-66-34-000-002)
- do a check of the impedance between the pins AB/13G and AB/2G of the FAC-2 rack connector.
NOTE : The impedance must be lower than 10 Ohms.
____
(1) If the impedance is correct:
- replace the FAC-2 (1CC2) (Ref. AMM TASK 22-66-34-400-002)
(2) If the impedance is not correct:
- do a check of the wiring between: . the pin AB/13G of the FAC-2 (1CC2) and the pin A/D3 of the FLT CTL/FAC pushbutton switch (12CC2) . the pin A/D1 of the FLT CTL/FAC pushbutton switch (12CC2) and the pin AB/2G of the FAC-2 (1CC2).
(a) If there is no continuity:
- repair the above wiring.
(b) If there is continuity:
- replace the P/BSW - FLT CTL/FAC 2 (12CC2).
- install the above removed FAC-2 (Ref. AMM TASK 22-66-34-400-002).
B. Do the test given in para. 3.
「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 A219
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 AUTO FLIGHT 自動飛行2(39)
