- the TR1 indication is shown in amber, the value is 0A and is shown in amber.

The TR1 page comes into view.
If on the TR1 page:
- the NO FAULT indication comes into view, and On the lower ECAM DU, on the ELEC page:

 - the TR1 supplies the DC1 busbar.

 Stop the trouble shooting.
 If on the TR1 page:
 - the TR1 indication comes into view, and On the ELEC page:

 - the line connection between the TR1 and the DC1 busbar is not shown,

 - the DC BAT busbar energizes the DC1 busbar.

 Continue the trouble shooting (Refer to the fault isolation which follows).

 4. Fault Isolation
_______________

 A. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------123VU TR1/SPLY 2PU1 AB10 125VU TR1/CNTOR/SPLY 4PU1 CF01
 B. If the test confirms the fault:
 - do a check of the status of the circuit breakers 4PU1 and 2PU1.
 (1) If the circuit breakers are closed:
 - do a check of the TR1 voltage on the lower ECAM DU, on the ELEC page.
 (a) If the TR1 voltage value is approximately 28VDC:
 - replace the CNTOR-TR 1 (5PU1) (Ref. AMM TASK 24-32-55-000-001) and (Ref. AMM TASK 24-32-55-400-001).
 1 If the fault continues:
_
 - do a check and repair the wiring between the TR1 28VDC outlet and the TR1 pin B/F (Ref. ASM 24-32/02).
 (b) If the TR1 voltage value is 0VDC and shown in amber:
 - do a check of the wiring between the circuit breaker 2PU1 and the TR1.
 1 If the wiring is correct:
_
 - replace the TR-1 (1PU1) (Ref. AMM TASK 24-32-51-000-001) and (Ref. AMM TASK 24-32-51-400-001).
 2 If the wiring is not correct:
_ - repair it (Ref. ASM 24-32/02).
 (2) If the circuit breaker 2PU1 is open:
 - close it.
 (a) If the circuit breaker trips:
 - do a check of the wiring for short to ground between the circuit breaker 2PU1 and the TR1 (Ref. ASM 24-32/02).
 1 If the wiring is not correct:
_ - repair it.
 2 If the wiring is correct:
_ - replace the C/B - TR1 SPLY (2PU1).

 (3) If the circuit breaker 4PU1 is open:
 - close it.
 (a) If the circuit breaker trips:
 - do a check of the wiring between the TR1 contactor pin 5 and the circuit breaker 4PU1 (Ref. ASM 24-32/02).
 1 If the wiring is not correct:
_
 - repair it.
 2 It the wiring is correct:

_
 - replace the C/B - TR1 CNTOR SPLY (4PU1).
 C. Do this Test:
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the MCDU:  The TR1 page comes into view.
 - push the line key adjacent to
 the TR1 indication,

 - push the line key adjacent to  The NO FAULT indication comes into
 the TR1 RESET indication. view.

 5. Close-up
________
 A. Put the aircraft back to its initial configuration.
 (1) On the MCDU, push the line key adjacent to the RETURN indication until the CFDS menu page comes into view.

 (2) Do the EIS stop procedure
 (Ref. AMM TASK 31-60-00-860-002).

 (3) De-energize the aircraft electrical circuits
 (Ref. AMM TASK 24-41-00-862-002).

 TASK 24-30-00-810-802
 Failure of the TR2 or TR2 Contactor or Related Wiring
 1. Possible Causes
_______________
 - CNTOR-TR 2 (5PU2)

 - CNTOR-TR 2/AC SVCE BUS NORM SPLY (14PU)

 - TR-2 (1PU2)

 - CNTOR-AC & DC GND SVCE SPLY (14XX)

 - wiring

 - RELAY GND/FLT SELECT CTL(7XX)

 - C/B - TR2 SPLY (2PU2)

 - C/B - TR2 CNTOR SPLY (4PU2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 24-32-51-000-001 Removal of the Transformer Rectifier (1PU1, 1PU2) AMM 24-32-51-400-001 Installation of the Transformer Rectifier (1PU1, 1PU2) AMM 24-32-55-000-001 Removal of the Transformer 1(2) Contactor (5PU1, 5PU2, 14PU) AMM 24-32-55-400-001 Installation of the Transformer 1(2) Contactor (5PU1, 5PU2, 14PU) AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from Engine 1(2) AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
　
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