1. Possible Causes
_______________
 - SEC-1 (1CE1)

 - wiring from the ANI 2-3 XDCR COM signal of the SEC 1 (1CE1) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
27-90-00-810-817 Loss of the ACS1 Signal of the SEC1 COM Side
 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 27-94/12

 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 1.
____
 (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: SEC1 COM OR WIRING FROM THS ACTR XDCR2 9CE

 - refer to Para. Fault Isolation.

 (b) If the ground scanning gives at least two maintenance messages of the list below: SEC1 COM OR WIRING FROM THS ACTR XDCR2 9CE SEC1 OR WIRING FROM L B ELEV POS XDCR 34CE3 SEC1 OR WIRING FROM R B ELEV POS XDCR 34CE4

 - do this trouble shooting procedure (Ref. TASK 27-90-00-810-817).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page 267
 Feb 01/03R CES

 4. Fault Isolation

_______________

 A. If the BITE test gives the maintenance message: SEC1 COM OR WIRING FROM THS ACTR XDCR2 9CE
 - replace the SEC-1 (1CE1), (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring from the ANI 2-3 XDCR COM signal of 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 268
 Feb 01/03R
 CES  Loss of the THS Monitor Transducer Signal for the SEC 1

 1. Possible Causes
_______________
 - SEC-1 (1CE1)

 - monitor position transducer of the THS actuator

 - command position transducer of the THS actuator

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

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

 - wiring from the ANI 2-3 XDCR MON signal of the SEC 1 (1CE1) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
27-90-00-810-818 Loss of the ACS1 Signal of the SEC1 MON Side 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) AMM 29-10-00-864-003 Depressurize the Blue Hydraulic System AMM 29-23-00-864-001 Depressurize the Green and Yellow Hydraulic Systems
 after Operation of the PTU AMM 29-24-00-864-001 Depressurize the Yellow Hydraulic System ASM 27-93/12 ASM 27-94/12
 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 1.
____
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-94-00∞∞∞∞∞∞∞∞∞∞Page 269
 Feb 01/03R
 CES

 (2) Do the BITE test of the EFCS (Ground Scanning) (Ref. AMM TASK 27-96-00-740-001).
　
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