- 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 ∞∞27-30-00∞∞∞∞∞∞∞∞∞∞Page 203
 Nov 01/99 CES
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message: SEC1 OR WIRING FROM L B ELEV POS XDCR 34CE3
 - 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 of the POS XDCR COM (ANI 2-1) signal from the SEC 1 (1CE1) to the first terminal block (Ref. ASM 27-94/07).
 B. Do the tests given in Para. 3.
 Failure of the Left Elevator Position MON Transducer
 1. Possible Causes
_______________
 - XDCR UNIT-ELEV POS, L (49CE1)
- wiring of the POS RVDT MON SPLY signal
- wiring of the POS RVDT MON V1, V2 signals
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
27-90-00-810-820 Loss of the ACS1 Signal of the ELAC1 MON Side and
 SEC1 MON Side
 31-32-00-810-933 Failure of the Analog Links
 AMM 27-92-13-000-001 Removal of the Elevator Servocontrol Position
 Transducer Unit 49CE1, 49CE2 AMM 27-92-13-400-001 Installation of the Elevator Servocontrol Position Transducer Unit 49CE1, 49CE2 AMM 27-96-00-710-020 Operational Test of the Side Stick Assembly
 (Activation for the BITE Test)
 AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning)
 ASM 27-93/07
 ASM 27-94/07
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the side stick assembly (Activation for the BITE test) (Ref. AMM TASK 27-96-00-710-020).
(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: L ELEV POS MON XDCR OF ELAC1/SEC1
- refer to Para. Fault Isolation.
(b) If the ground scanning gives at least two maintenance messages of the list below: L ELEV POS MON XDCR OF ELAC1/SEC1 L G ELEV MODE XDCR 34CE1
R  R ELEV POS MON XDCR OF ELAC1/SEC1 R Y ELEV MODE XDCR 34CE2 THS ACTR XDCR2 MON 9CE
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-30-00∞∞∞∞∞∞∞∞∞∞Page 205
 Aug 01/05 CES
 - do this trouble shooting procedure (Ref. TASK 27-90-00-810- 
820). 
 4. Fault Isolation_______________  
R  A. If the test gives the maintenance message L ELEV POS MON XDCR OF  
R  ELAC1/SEC1  
R  - disconnect and cross the electrical connectors of the elevator position  
R  transducer unit (49CE1) (Ref. ASM 27-93/07) and do the test given in  
R  Para. 3.  
R  NOTE : After the test connect the electrical connectors on their initial____  
R  plugs.  
R  (1) If the fault continues:  
R  - do the trouble shooting procedure (Ref. TASK 31-32-00-810-933)  
R  related to the ANI 2-X analog input signal of the ELAC COM and SEC  
R  COM (Ref. ASM 27-93/07) and (Ref. ASM 27-94/07).  
R  (2) If the test gives the maintenance message L ELEV POS MON XDCR OF  
R  ELAC2/SEC2:  
R  - replace the XDCR UNIT-ELEV POS, L (49CE1) (Ref. AMM TASK 27-92-13- 
 
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