(b) If there is continuity:
 - do a check and repair the wiring of the K12-1B and 2B signal from the SEC 1 (1CE1) to the first terminal block, (Ref. ASM 27-94/12).
 B. Do the tests 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 ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page 273
 Feb 01/03R
 CES  Loss of the THS Command Transducer Signal for the SEC 2

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

 - Command Position Transducer

 - wiring of the XDCR COM SPLY signal from the THS actuator (9CE) to the first terminal block

 - wiring of the XDCR COM V1, V2 signals from the THS actuator (9CE) to the SEC 2 (1CE2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
27-90-00-810-821 Loss of the ACS1 Signal of the SEC2 COM Side 27-90-00-810-823 Loss of the ACS1 Signal of the ELAC2 COM Side and SEC2 COM Side AMM 27-44-56-000-001 Removal of the Position Transducer from the THS Actuator 9CE AMM 27-44-56-400-001 Installation of the Position Transducer to the THS
 Actuator 9CE
 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 27-96-00-710-022 Operational Test of the THS Actuator Electrical

 Control (Activation for BITE Test)
 AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning)
 ASM 27-94/13

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the THS actuator electrical control (Ref. AMM TASK 27-96-00-710-022).
 NOTE : Do the ground setting only with the SEC 2.
____
 (2) Do the BITE test of the EFCS (Ground Scanning) (Ref. AMM TASK 27-96-00-740-001).
 (a) If the ground scanning gives the maintenance message: SEC2 COM OR INPUT OF THS ACTR XDCR3 9CE
 - refer to Para. Fault Isolation.
 「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 ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page 274
 Feb 01/03R CES

 (b) If the ground scanning gives at least two maintenance messages of the list below: SEC2 OR WIRING FROM L G ELEV POS XDCR 34CE1 SEC2 OR WIRING FROM R Y ELEV POS XDCR 34CE2 SEC2 COM OR INPUT OF THS ACTR XDCR3 9CE

 - do this trouble shooting procedure (Ref. TASK 27-90-00-810-821).

 (c) If the ground scanning gives at least two maintenance messages of the list below: L G ELEV POS XDCR 34CE1 COM E2/S2:USE STBY XDCR R Y ELEV POS XDCR 34CE2 COM E2/S2:USE STBY XDCR ELAC2 COM OR INPUT OF THS ACTR XDCR1 9CE SEC2 COM OR INPUT OF THS ACTR XDCR3 9CE

 - do this trouble shooting procedure (Ref. TASK 27-90-00-810-823).
 4. Fault Isolation
_______________
 A. If the BITE test gives the maintenance message:
 SEC2 COM OR INPUT OF THS ACTR XDCR3 9CE

 - replace the SEC-2 (1CE2), (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
 (1) If the fault continues:

 - replace the Command Position Transducer, (Ref. AMM TASK 27-44-56-000-001) and (Ref. AMM TASK 27-44-56-400-001).

 (2) If the fault continues:

 - do a check of the wiring of the XDCR COM SPLY signal from the THS actuator (9CE) to the first terminal block, (Ref. ASM 27-94/13).
 (a) If there is no continuity, repair the wiring.

 (b) If there is continuity:

 - do a check and repair the wiring of the XDCR COM V1, V2 signals from the THS actuator (9CE) to the SEC 2 (1CE2), (Ref. ASM 27-94/13).
 B. Do the tests 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 ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page 275
 Feb 01/03R
 CES  Loss of the THS Monitor Transducer Signal for the SEC 2

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

 - Monitor Position Transducer
　
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