W DOC AIRBUS | TSM A320F

Failure of the SEC3

TASK 27-94-00-810-870-A
Failure of the SEC3

1. Possible Causes
  • RELAY-SEC 3 ANN SPLY [41CE3]
  • SEC-3 [1CE3]
  • wiring of the RLY SEC FAULT signal from the relay to the SEC3
  • FCDC-1 [3CE1]
  • FCDC-2 [3CE2]
  • wiring of the DSI 20/5 (SEC 3 FAILED) signals
  • wiring of the 28VDC GND signal
  • wiring of the SEC3 ENGAGED (DSI 04) signal
  • wiring of the PLD ACTIVATION (DSI 01) signal
  • wiring of the REVERSE LOCK AUTHORIZATION (DSI02) signal
  • wiring from the pins A/C1 and A/C3 of the pushbutton switch (5CE3) to the first terminal block
  • P/BSW-FLT CTL/SEC 3 (5CE3)
  • wiring of the DGO 03 signal
  • wiring from the circuit breaker (21CE3) to the first terminal block
  • wiring from the SEC3 (1CE3) pin AC/2 for the COM part and pin AF/2 for the MON part to the circuit breaker (21CE3)
  • wiring of the PIN PROGRAM SEC3 (DSI 16) signal
  • wiring from the SEC3 (1CE3) pin AC/2 for the COM part and pin AF/2 for the MON part to the circuit breaker (21CE3):
  • wiring of the DSI 33 signal
  • wiring of the DSI 34 signal
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
ASM 279204
ASM 279205
AIPC 27920802
AIPC 27920803
ASM 279240
ASM 279255
AMM 27-94-00-710-001
Operational Test of the Spoiler Elevator Computer 3 (SEC 3)
AMM 27-94-34-000-001
Removal of the SEC
AMM 27-94-34-400-001
Installation of the SEC
ASM 279504
ASM 279505
AMM 27-95-34-000-001
Removal of the FCDC
AMM 27-95-34-400-001
Installation of the FCDC
AMM 27-96-00-740-001
BITE Test of the EFCS (Ground Scanning)
3. Fault Confirmation
Subtask 27-94-00-740-162-A
A. Test
   (1) Do the BITE test of the EFCS (ground scanning) AMM 27-96-00-740-001.
4. Fault Isolation
Subtask 27-94-00-865-051-A
A. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
121VUFLIGHT CONTROLS/SEC3/SPLY21CE3Q19
Subtask 27-94-00-810-134-B ** ON A/C NOT FOR ALL
B. Do the operational test of the SEC3 AMM 27-94-00-710-001 to make sure that it does the servoing of its related surfaces.
   (1) If the flight controls move in relation to the SEC3 servoing:
     (a) Remove the SEC3 AMM 27-94-34-000-001.
     (b) At the SEC3 receptacle, do a check of the resistance between pin AB/12K and pin AE/12A ASM 279205.
       1 If the resistance is less than 280 ohms:
         a Remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
         b Do a check of the resistance of the relay between pins X1 and X2.
       2 If the resistance is more than 400 ohms:
         a Remove the relay (41CE3).
         b Do a check of the resistance of the relay between pins X1 and X2.
  • If the resistance is more than 400 ohms:
    . replace the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803
    . install the SEC3 AMM 27-94-34-400-001.
  • If the resistance is between 280 and 400 ohms:
    . do a check and repair the wiring of the RLY SEC FAULT signal from the relay to the SEC3 ASM 279205
    . install the relay
    . install the SEC3 AMM 27-94-34-400-001.
       3 If the resistance is between 280 and 400 ohms:
         a Install the SEC3 AMM 27-94-34-400-001.
         b Remove the FCDC-1 [3CE1] AMM 27-95-34-000-001.
         c If the fault continues:
         d If the fault continues:
  • remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803
  • if the SEC3 FAULT warning message stays in view, install the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803 and go to Para. e_.
  • if the SEC3 FAULT warning message goes out of view, replace the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803.
         e If the fault continues:
  • do a check and repair the wiring of the DSI 20/5 (SEC 3 FAILED) signals from the FCDC1 (3CE1) and the FCDC2 (3CE2) to the RLY-SEC 3 ANN SPLY (41CE3) ASM 279504 and ASM 279505.
   (2) If the flight controls do not move in relation to the SEC3 servoing:
  • do a check of the circuit breaker (21CE3) status:
     (a) If the circuit breaker is closed:
  • do a check for + 28VDC at pin AC/2 for the COM part and pin AF/2 for the MON part of the SEC3 (1CE3) ASM 279204.
       1 If there is 28VDC:
         a Do a check of the wiring of the 28VDC GND signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. b_.
         b Do a check of the wiring of the SEC3 ENGAGED (DSI 04) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. c_.
         c On the SEC from standard 112, do a check of the wiring of the PLD ACTIVATION (DSI 01) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. d_.
         d On the SEC from standard 112, do a check of the wiring of the REVERSE LOCK AUTHORIZATION (DSI02) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. e_.
         e Do a check of the wiring from the pins A/C1 and A/C3 of the pushbutton switch (5CE3) to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. f_.
         f Replace the P/BSW-FLT CTL/SEC 3 (5CE3) AIPC 27920802.
         g If the fault continues:
  • do a check of the wiring of the DGO 03 signal from the SEC3 (1CE3) COM part to MON part and MON part to COM part ASM 279255.
    . if there is no continuity, repair the above wiring
    . if there is continuity, go to Para. 2_.
       2 If there is no 28VDC:
  • do a check and repair the wiring from the circuit breaker (21CE3) to the first terminal block ASM 279204.
     (b) If the circuit breaker is open:
  • close it.
     (c) If it trips again:
       1 If the fault continues:
         a do a check for a short to ground at the wiring from the SEC3 (1CE3) pin AC/2 for the COM part and pin AF/2 for the MON part to the circuit breaker (21CE3) ASM 279204:
  • If there is a short to ground, repair the above wiring.
  • If there is no short to ground, replace the circuit breaker (21CE3).
Subtask 27-94-00-810-134-C ** ON A/C NOT FOR ALL
B. Do the operational test of the SEC3 AMM 27-94-00-710-001 to make sure that it does the servoing of its related surfaces.
   (1) If the flight controls move in relation to the SEC3 servoing:
     (a) Remove the SEC3 AMM 27-94-34-000-001.
     (b) At the SEC3 receptacle, do a check of the resistance between pin AB/12K and pin AE/12A ASM 279205.
       1 If the resistance is less than 280 ohms:
         a Remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
         b Do a check of the resistance of the relay between pins X1 and X2.
       2 If the resistance is more than 400 ohms:
         a Remove the relay (41CE3).
         b Do a check of the resistance of the relay between pins X1 and X2.
  • If the resistance is more than 400 ohms:
    . replace the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803
    . install the SEC3 AMM 27-94-34-400-001.
  • If the resistance is between 280 and 400 ohms:
    . do a check and repair the wiring of the RLY SEC FAULT signal from the relay to the SEC3 ASM 279205
    . install the relay
    . install the SEC3 AMM 27-94-34-400-001.
       3 If the resistance is between 280 and 400 ohms:
         a Install the SEC3 AMM 27-94-34-400-001.
         b Remove the FCDC-1 [3CE1] AMM 27-95-34-000-001.
         c If the fault continues:
         d If the fault continues:
  • remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
  • if the SEC3 FAULT warning message stays in view, install the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803 and go to Para. e_.
  • if the SEC3 FAULT warning message goes out of view, replace the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803.
         e If the fault continues:
  • do a check and repair the wiring of the DSI 20/5 (SEC 3 FAILED) signals from the FCDC1 (3CE1) and the FCDC2 (3CE2) to the RLY-SEC 3 ANN SPLY (41CE3) ASM 279504 and ASM 279505.
   (2) If the flight controls do not move in relation to the SEC3 servoing:
  • do a check of the circuit breaker (21CE3) status:
     (a) If the circuit breaker is closed:
  • do a check for + 28VDC at pin AC/2 for the COM part and pin AF/2 for the MON part of the SEC3 (1CE3) ASM 279204.
       1 If there is 28VDC:
         a Do a check of the wiring of the 28VDC GND signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. b_.
         b Do a check of the wiring of the SEC3 ENGAGED (DSI 04) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. c_.
         c On the SEC from standard 112, do a check of the wiring of the PLD ACTIVATION (DSI 01) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. d_.
         d On the SEC from standard 112, do a check of the wiring of the REVERSE LOCK AUTHORIZATION (DSI02) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. e_.
         e Do a check of the wiring from the pins A/C1 and A/C3 of the pushbutton switch (5CE3) to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. f_.
         f Replace the P/BSW-FLT CTL/SEC 3 (5CE3) AIPC 27920802.
         g If the fault continues:
  • do a check of the wiring of the DGO 03 signal from the SEC3 (1CE3) COM part to MON part and MON part to COM part ASM 279255:
    . if there is no continuity, repair the above wiring
    . if there is continuity, go to Para. h_.
         h Do a check of the wiring of the PIN PROGRAM SEC3 (DSI 16) signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279240:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. 2_.
       2 If there is no 28VDC:
  • do a check and repair the wiring from the circuit breaker (21CE3) to the first terminal block ASM 279204.
     (b) If the circuit breaker is open:
  • close it.
     (c) If it trips again:
       1 If the fault continues:
         a do a check for a short to ground at the wiring from the SEC3 (1CE3) pin AC/2 for the COM part and pin AF/2 for the MON part to the circuit breaker (21CE3) ASM 279204:
  • If there is a short to ground, repair the above wiring.
  • If there is no short to ground, replace the circuit breaker (21CE3).
Subtask 27-94-00-810-134-D ** ON A/C NOT FOR ALL
B. Do the operational test of the SEC3 AMM 27-94-00-710-001 to make sure that it does the servoing of its related surfaces.
   (1) If the flight controls move in relation to the SEC3 servoing:
     (a) Remove the SEC3 AMM 27-94-34-000-001.
     (b) At the SEC3 receptacle, do a check of the resistance between pin AB/12K and pin AE/12A ASM 279205.
       1 If the resistance is less than 280 ohms:
         a Remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
         b Do a check of the resistance of the relay between pins X1 and X2.
       2 If the resistance is more than 400 ohms:
         a Remove the relay (41CE3).
         b Do a check of the resistance of the relay between pins X1 and X2.
  • If the resistance is more than 400 ohms:
    . replace the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803
    . install the SEC3 AMM 27-94-34-400-001.
  • If the resistance is between 280 and 400 ohms:
    . do a check and repair the wiring of the RLY SEC FAULT signal from the relay to the SEC3 ASM 279205
    . install the relay
    . install the SEC3 AMM 27-94-34-400-001.
       3 If the resistance is between 280 and 400 ohms:
         a Install the SEC3 AMM 27-94-34-400-001.
         b Remove the FCDC-1 [3CE1] AMM 27-95-34-000-001.
         c If the fault continues:
         d If the fault continues:
  • remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
  • if the SEC3 FAULT warning message stays in view, install the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803 and go to Para. e_.
  • if the SEC3 FAULT warning message goes out of view, replace the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803.
         e If the fault continues:
  • do a check and repair the wiring of the DSI 20/5 (SEC 3 FAILED) signals from the FCDC1 (3CE1) and the FCDC2 (3CE2) to the RLY-SEC 3 ANN SPLY (41CE3) ASM 279504 and ASM 279505.
   (2) If the flight controls do not move in relation to the SEC3 servoing:
  • do a check of the circuit breaker (21CE3) status:
     (a) If the circuit breaker is closed:
  • do a check for + 28VDC at pin AC/2 for the COM part and pin AF/2 for the MON part of the SEC3 (1CE3) ASM 279204.
       1 If there is 28VDC:
         a Do a check of the wiring of the 28VDC GND signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. b_.
         b Do a check of the wiring of the SEC3 ENGAGED (DSI 04) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. c_.
         c On the SEC from standard 112, do a check of the wiring of the PLD ACTIVATION (DSI 01) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. d_.
         d On the SEC from standard 112, do a check of the wiring of the REVERSE LOCK AUTHORIZATION (DSI02) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. e_.
         e Do a check of the wiring from the pins A/C1 and A/C3 of the pushbutton switch (5CE3) to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. f_.
         f Replace the P/BSW-FLT CTL/SEC 3 (5CE3) AIPC 27920802.
         g If the fault continues:
  • do a check of the wiring of the DGO 03 signal from the SEC3 (1CE3) COM part to MON part and MON part to COM part ASM 279255.
    . if there is no continuity, repair the above wiring
    . if there is continuity, go to Para. h_.
         h Do a check of the wiring of the PIN PROGRAM SEC3 (DSI 16) signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279240.
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. 2_.
       2 If there is no 28VDC:
  • do a check and repair the wiring from the circuit breaker (21CE3) to the first terminal block ASM 279204.
     (b) If the circuit breaker is open:
  • close it.
     (c) If it trips again:
       1 If the fault continues:
         a do a check for a short to ground at the wiring from the SEC3 (1CE3) pin AC/2 for the COM part and pin AF/2 for the MON part to the circuit breaker (21CE3): ASM 279204:
  • If there is a short to ground, repair the above wiring.
  • If there is no short to ground, replace the circuit breaker (21CE3).
       2 Do a check and repair the wiring of the DSI 33 signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279240.
Subtask 27-94-00-810-134-F ** ON A/C NOT FOR ALL
B. Do the operational test of the SEC3 AMM 27-94-00-710-001 to make sure that it does the servoing of its related surfaces.
   (1) If the flight controls move in relation to the SEC3 servoing:
     (a) Remove the SEC3 AMM 27-94-34-000-001.
     (b) At the SEC3 receptacle, do a check of the resistance between pin AB/12K and pin AE/12A ASM 279205.
       1 If the resistance is less than 280 ohms:
         a Remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
         b Do a check of the resistance of the relay between pins X1 and X2.
       2 If the resistance is more than 400 ohms:
         a Remove the relay (41CE3).
         b Do a check of the resistance of the relay between pins X1 and X2.
  • If the resistance is more than 400 ohms:
    . replace the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803
    . install the SEC3 AMM 27-94-34-400-001.
  • If the resistance is between 280 and 400 ohms:
    . do a check and repair the wiring of the RLY SEC FAULT signal from the relay to the SEC3 ASM 279205
    . install the relay
    . install the SEC3 AMM 27-94-34-400-001.
       3 If the resistance is between 280 and 400 ohms:
         a Install the SEC3 AMM 27-94-34-400-001.
         b Remove the FCDC-1 [3CE1] AMM 27-95-34-000-001.
         c If the fault continues:
         d If the fault continues:
  • remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
  • if the SEC3 FAULT warning message stays in view, install the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803 and go to Para. e_.
  • if the SEC3 FAULT warning message goes out of view, replace the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803.
         e If the fault continues:
  • do a check and repair the wiring of the DSI 20/5 (SEC 3 FAILED) signals from the FCDC1 (3CE1) and the FCDC2 (3CE2) to the RLY-SEC 3 ANN SPLY (41CE3) ASM 279504 and ASM 279505.
   (2) If the flight controls do not move in relation to the SEC3 servoing:
  • do a check of the circuit breaker (21CE3) status:
     (a) If the circuit breaker is closed:
  • do a check for + 28VDC at pin AC/2 for the COM part and pin AF/2 for the MON part of the SEC3 (1CE3) ASM 279204.
       1 If there is 28VDC:
         a Do a check of the wiring of the 28VDC GND signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. b_.
         b Do a check of the wiring of the SEC3 ENGAGED (DSI 04) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. c_.
         c On the SEC from standard 112, do a check of the wiring of the PLD ACTIVATION (DSI 01) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. d_.
         d On the SEC from standard 112, do a check of the wiring of the REVERSE LOCK AUTHORIZATION (DSI02) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. e_.
         e Do a check of the wiring from the pins A/C1 and A/C3 of the pushbutton switch (5CE3) to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. f_.
         f Replace the P/BSW-FLT CTL/SEC 3 (5CE3) AIPC 27920802.
         g If the fault continues:
  • do a check and repair the wiring of the DGO 03 signal from the SEC3 (1CE3) COM part to MON part and MON part to COM part ASM 279255:
    . if there is no continuity, repair the above wiring
    . if there is continuity, go to Para. h_.
         h Do a check and repair the wiring of the PIN PROGRAM SEC3 (DSI 16) signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279240:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. 2_.
       2 If there is no 28VDC:
  • do a check and repair the wiring from the circuit breaker (21CE3) to the first terminal block ASM 279204.
     (b) If the circuit breaker is open:
  • close it.
     (c) If it trips again:
       1 If the fault continues:
  • do a check for a short to ground at the wiring from the SEC3 (1CE3) pin AC/2 for the COM part and pin AF/2 for the MON part to the circuit breaker (21CE3): ASM 279204.
         a If there is a short to ground, repair the above wiring.
         b If there is no short to ground, replace the circuit breaker (21CE3).
       2 Do a check for an open circuit of the wiring of the DSI 33 signal from the SEC3 (1CE3) COM part and MON part:
         a For the COM part:
         b For the MON part:
Subtask 27-94-00-810-134-J ** ON A/C NOT FOR ALL
B. Do the operational test of the SEC3 AMM 27-94-00-710-001 to make sure that it does the servoing of its related surfaces.
   (1) If the flight controls move in relation to the SEC3 servoing:
     (a) Remove the SEC3 AMM 27-94-34-000-001.
     (b) At the SEC3 receptacle, do a check of the resistance between pin AB/12K and pin AE/12A ASM 279205.
       1 If the resistance is less than 280 ohms:
         a Remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
         b Do a check of the resistance of the relay between pins X1 and X2.
       2 If the resistance is more than 400 ohms:
         a Remove the relay (41CE3).
         b Do a check of the resistance of the relay between pins X1 and X2.
  • If the resistance is more than 400 ohms:
    . replace the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803
    . install the SEC3 AMM 27-94-34-400-001.
  • If the resistance is between 280 and 400 ohms:
    . do a check and repair the wiring of the RLY SEC FAULT signal from the relay to the SEC3 ASM 279205
    . install the relay
    . install the SEC3 AMM 27-94-34-400-001.
       3 If the resistance is between 280 and 400 ohms:
         a Install the SEC3 AMM 27-94-34-400-001.
         b Remove the FCDC-1 [3CE1] AMM 27-95-34-000-001.
         c If the fault continues:
         d If the fault continues:
  • remove the RELAY-SEC 3 ANN SPLY [41CE3] AIPC 27920803.
  • if the SEC3 FAULT warning message stays in view, install the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803 and go to Para. e_.
  • if the SEC3 FAULT warning message goes out of view, replace the RLY-SEC 3 ANN SPLY (41CE3) AIPC 27920803.
         e If the fault continues:
  • do a check and repair the wiring of the DSI 20/5 (SEC 3 FAILED) signals from the FCDC1 (3CE1) and the FCDC2 (3CE2) to the RLY-SEC 3 ANN SPLY (41CE3) ASM 279504 and ASM 279505.
   (2) If the flight controls do not move in relation to the SEC3 servoing:
  • do a check of the circuit breaker (21CE3) status:
     (a) If the circuit breaker is closed:
  • do a check for + 28VDC at pin AC/2 for the COM part and pin AF/2 for the MON part of the SEC3 (1CE3) ASM 279204.
       1 If there is 28VDC:
         a Do a check of the wiring of the 28VDC GND signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. b_.
         b Do a check of the wiring of the SEC3 ENGAGED (DSI 04) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. c_.
         c On the SEC from standard 112, do a check of the wiring of the PLD ACTIVATION (DSI 01) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. d_.
         d On the SEC from standard 112, do a check of the wiring of the REVERSE LOCK AUTHORIZATION (DSI02) signal from the SEC3 (1CE3) COM part and MON part to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. e_.
         e Do a check of the wiring from the pins A/C1 and A/C3 of the pushbutton switch (5CE3) to the first terminal block ASM 279204:
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. f_.
         f Replace the P/BSW-FLT CTL/SEC 3 (5CE3) AIPC 27920802.
         g If the fault continues:
  • do a check of the wiring of the DGO 03 signal from the SEC3 (1CE3) COM part to MON part and MON part to COM part ASM 279255.
    . if there is no continuity, repair the above wiring
    . if there is continuity, go to Para. h_.
         h Do a check of the wiring of the PIN PROGRAM SEC3 (DSI 16) signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279240.
  • if there is no continuity, repair the above wiring
  • if there is continuity, go to Para. 2_.
       2 If there is no 28VDC:
  • do a check and repair the wiring from the circuit breaker (21CE3) to the first terminal block ASM 279204.
     (b) If the circuit breaker is open:
  • close it.
     (c) If it trips again:
       1 If the fault continues:
         a do a check for a short to ground at the wiring from the SEC3 (1CE3) pin AC/2 for the COM part and pin AF/2 for the MON part to the circuit breaker (21CE3): ASM 279204:
  • If there is a short to ground, repair the above wiring.
  • If there is no short to ground, replace the circuit breaker (21CE3).
       2 Do a check and repair the wiring of the DSI 33 signal from the SEC3 (1CE3) COM part and MON part to the ground terminal ASM 279240.
       3 Do a check for an open circuit of the wiring of the DSI 34 signal from the SEC3 (1CE3) COM part and MON part:
         a For the COM part:
         b For the MON part:
Subtask 27-94-00-740-163-A
C. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:28:18 UTC
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