(c) If the resistance is more than 250 ohms: 1 Do a check and repair the wiring of the ACS2 signal from the

 1_ Do the trouble shooting procedure (Ref. TASK 27-90-00-810-
801).
 2_ Replace the ELAC-2 (2CE2) (Ref. AMM TASK 27-93-34-000-001) and
 (Ref. AMM TASK 27-93-34-400-001).

_ ELAC2 MON side to the first terminal block (Ref. ASM 27-93/03).
 2 Install the ELAC2 (Ref. AMM TASK 27-93-34-400-001).
_
 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 223
 May 01/04R
 CES  Loss of the ACS1 Signal of the ELAC1 COM Side

 1. Possible Causes
_______________
 - ELAC-1 (2CE1)

 - SEC-1 (1CE1)

 - wiring of the ACS1 SPLY signal from the ELAC1 COM side to the MON side

 - wiring of the ACS1 SPLY COM signal from the ELAC1 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 27-93/07

 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: ELAC1 COM OR WIRING FROM THS ACTR XDCR2 9CE ELAC1 OR WIRING FROM L B ELEV POS XDCR 34CE3 ELAC1 OR WIRING FROM R B ELEV POS XDCR 34CE4
 (1) Remove the ELAC1 (Ref. AMM TASK 27-93-34-000-001) and the SEC1 (Ref. AMM TASK 27-94-34-000-001).

 (2) At the ELAC1 receptacle, do a check of the resistance between the pin AD/6B and the pin AD/6C (Ref. ASM 27-93/07):

 (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 224
 May 01/04R CES

 2 Replace the ELAC-1 (2CE1) (Ref. AMM TASK 27-93-34-000-001) and
 3 Replace the SEC-1 (1CE1) (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 ELAC1 COM side to the MON side (Ref. ASM 27-93/07): . pins AA/13A and AA/13B to pins AA/8K and AA/8G of the ELAC1 COM side . pins AA/8H and AA/8J of the ELAC1 COM side to pins AD/6A and AD/6D of the ELAC1 MON side.
 1 If the wiring is not correct:
_
 - repair it

 - install the ELAC1 (Ref. AMM TASK 27-93-34-400-001) and the SEC1 (Ref. AMM TASK 27-94-34-400-001).

 a If the fault continues:
_
 - replace the ELAC-1 (2CE1) (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-1 (2CE1) (Ref. AMM TASK 27-93-34-000-001)
_ and (Ref. AMM TASK 27-93-34-400-001).
 b Install the SEC1 (Ref. AMM TASK 27-94-34-400-001).
_
 c If the fault continues:
_
 - do a check and repair the wiring of the ACS1 SPLY COM signal from the ELAC1 MON side to the first terminal block, pins AD/6B and AD/6C (Ref. ASM 27-93/07).
 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 225
 May 01/04R
 CES  Loss of the ACS1 Signal of the ELAC1 MON Side

 1. Possible Causes
_______________
 - ELAC-1 (2CE1)

 - SEC-1 (1CE1)

 - wiring of the ACS1 SPLY signal from the ELAC1 MON side to the COM side

 - wiring of the ACS1 SPLY MON signal from the ELAC1 COM side to the first terminal block
　
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