- ELAC1 OR WIRING FROM R B ELEV POS XDCR 34CE4

 Second list:

 - ELAC1 MON OR WIRING FROM THS ACTR XDCR2 9CE

 - ELAC1 OR WIRING FROM L ELEV POS MON XDCR

 - ELAC1 OR WIRING FROM R ELEV POS MON XDCR

 - ELAC1 OR WIRING FROM L G ELEV MODE XDCR 34CE1

 - ELAC1 OR WIRING FROM R Y ELEV MODE XDCR 34CE2

 (1) First case: Combination of maintenance messages of the first list, do this trouble shooting procedure (Ref. TASK 27-90-00-810-811).
 「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 ∞∞27-90-00∞∞∞∞∞∞∞∞∞∞Page 228
 May 01/04R CES

 (2) Second case: Combination of maintenance messages of the second list, do this trouble shooting procedure (Ref. TASK 27-90-00-810-812).

 (3) Third case: Combination of maintenance messages of the first and second lists:

 - replace the ELAC-1 (2CE1) (Ref. AMM TASK 27-93-34-000-001) and (Ref. AMM TASK 27-93-34-400-001). NOTE: To help the trouble shooting of the ELAC in the workshop, put a label with the indication: "failure of internal relays K20 and K21".
 (a) If the fault continues:
 - replace the SEC-1 (1CE1) (Ref. AMM TASK 27-94-34-000-001) (Ref. AMM TASK 27-94-34-400-001).
 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 ∞∞27-90-00∞∞∞∞∞∞∞∞∞∞Page 229
 May 01/04R
 CES  Loss of the ACS1 Signal of the ELAC2 COM Side

 1. Possible Causes
_______________
 - ELAC-2 (2CE2)

 - SEC-2 (1CE2)

 - wiring of the ACS1 SPLY signal from the ELAC2 COM side to the MON side

 - wiring of the ACS1 SPLY COM signal from the ELAC2 MON side to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
27-90-00-810-801 Failure of an Alternating Current Supply (ACS)
 AMM 27-93-34-000-001 Removal of the ELAC (2CE1,2CE2)
 AMM 27-93-34-400-001 Installation of the ELAC (2CE1,2CE2)
 AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3)
 AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3)
 AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning)
 ASM 27-93/08

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the EFCS (ground scanning) (Ref. AMM TASK 27-96-00-740-001).
 4. Fault Isolation
_______________
 A. If the ground scanning gives at least two maintenance messages of the list below: ELAC2 COM OR INPUT OF THS ACTR XDCR1 9CE ELAC2 OR WIRING FROM L G ELEV POS XDCR 34CE1 ELAC2 OR WIRING FROM R Y ELEV POS XDCR 34CE2
 (1) Remove the ELAC2 (Ref. AMM TASK 27-93-34-000-001) and the SEC2 (Ref. AMM TASK 27-94-34-000-001).

 (2) At the ELAC2 receptacle, do a check of the resistance between the pin AD/6B and the pin AD/6C (Ref. ASM 27-93/08):

 (a) If the resistance is less than 10 Ohms:
 1 Do this procedure (Ref. TASK 27-90-00-810-801).
_
 「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 ∞∞27-90-00∞∞∞∞∞∞∞∞∞∞Page 230
 May 01/04R CES

 2 Replace the ELAC-2 (2CE2) (Ref. AMM TASK 27-93-34-000-001) and
 3 Replace the SEC-2 (1CE2) (Ref. AMM TASK 27-94-34-000-001) and
_
 (Ref. AMM TASK 27-94-34-400-001).

 (b) If the resistance is more than 10 Ohms:
 - do a check of the wiring of the ACS1 SPLY signal from the ELAC2 COM side to the MON side (Ref. ASM 27-93/08): . pins AA/13A and AA/13B to pins AA/8G and AA/8K of the ELAC2 COM side . pins AA/8H and AA/8J of the ELAC2 COM side to pins AD/6A and AD/6D of the ELAC2 MON side.
 1 If the wiring is not correct:
_
 - repair it

 - install the ELAC2 (Ref. AMM TASK 27-93-34-400-001) and the SEC2 (Ref. AMM TASK 27-94-34-400-001).

 a If the fault continues:
_
 - replace the ELAC-2 (2CE2) (Ref. AMM TASK 27-93-34-000-001) and (Ref. AMM TASK 27-93-34-400-001).
 2 If the wiring is correct:
_ a Replace the ELAC-2 (2CE2) (Ref. AMM TASK 27-93-34-000-001)
_ and (Ref. AMM TASK 27-93-34-400-001).
 b Install the SEC2 (Ref. AMM TASK 27-94-34-400-001).
　
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