_______________
 A. If the test gives the maintenance message NO PHC1 DATA:
 - replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
 (1) If the fault continues:

 - replace the PHC-1 (6DA1) (Ref. AMM TASK 30-31-34-000-002) and (Ref. AMM TASK 30-31-34-400-002).

 (2) If the fault continues:

 - do a check and repair the wiring from the CFDIU (1TW) to the PHC 1 (6DA1) from pins AA/11D, 11E to pins A/M, N (Ref. ASM 31-32/06).
 B. Do the test given in Para. 3.B.
 「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 ∞∞31-32-00∞∞∞∞∞∞∞∞∞∞Page A227
 May 01/05R
 CES  Loss of the PHC 2 Output Bus by the CFDIU

 1. Possible Causes
_______________
 - CFDIU (1TW)

 - PHC-2 (6DA2)

 - wiring from the CFDIU (1TW) to the PHC 2 (6DA2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 30-31-34-000-002 Removal of the Probe Heat Computer (PHC) (6DA1,6DA2,6DA3) AMM 30-31-34-400-002 Installation of the Probe Heat Computer (PHC)
 (6DA1,6DA2,6DA3) AMM 31-32-00-869-002 Procedure for Class 3 Faults Reading AMM 31-32-34-000-001 Removal of the CFDIU (1TW) AMM 31-32-34-400-001 Installation of the CFDIU (1TW) ASM 31-32/06
 3. Fault Confirmation
__________________
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU ANTI ICE/PROBES/2/TAT 1DA2 Y15 122VU ANTI ICE/PROBES/2/PITOT 3DA2 Y14 122VU ANTI ICE/PROBES/2/AOA 4DA2 Y13 122VU ANTI ICE/PROBES/2/PHC 2DA2 Y12 122VU ANTI ICE/PROBES/2/STATIC 5DA2 Y11
 B. Test On the CFDS MENU page, get access to the AVIONICS STATUS page (Ref. AMM TASK 31-32-00-869-002).
 「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 ∞∞31-32-00∞∞∞∞∞∞∞∞∞∞Page A228
 May 01/05R
 CES  4. Fault Isolation

_______________
 A. If the test gives the maintenance message NO PHC2 DATA:
 - replace the CFDIU (1TW) (Ref. AMM TASK 31-32-34-000-001) and (Ref. AMM TASK 31-32-34-400-001).
 (1) If the fault continues:

 - replace the PHC-2 (6DA2) (Ref. AMM TASK 30-31-34-000-002) and (Ref. AMM TASK 30-31-34-400-002).

 (2) If the fault continues:

 - do a check and repair the wiring from the CFDIU (1TW) to the PHC 2 (6DA2) from pins AB/11F, 11G to pins A/M, N (Ref. ASM 31-32/06).
 B. Do the test given in Para. 3.B.
 「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 ∞∞31-32-00∞∞∞∞∞∞∞∞∞∞Page A229
 May 01/05R
 CES  Loss of the PHC 3 Output Bus by the CFDIU

 1. Possible Causes
_______________
 - CFDIU (1TW)

 - PHC-3 (6DA3)

 - wiring from the CFDIU (1TW) to the PHC 3 (6DA3)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 30-31-34-000-002 Removal of the Probe Heat Computer (PHC)
 (6DA1,6DA2,6DA3)
 AMM 30-31-34-400-002 Installation of the Probe Heat Computer (PHC)

 (6DA1,6DA2,6DA3)
 AMM 31-32-00-869-002 Procedure for Class 3 Faults Reading
 AMM 31-32-34-000-001 Removal of the CFDIU (1TW)
 AMM 31-32-34-400-001 Installation of the CFDIU (1TW)
 ASM 31-32/06

 3. Fault Confirmation
__________________
 A. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU ANTI ICE/PROBES/PHC/3 2DA3 Y16 122VU ANTI ICE/PROBES/3/PITOT 3DA3 Z16 122VU ANTI ICE/PROBES/3/AOA 4DA3 Z15 122VU ANTI ICE/PROBES/3/STATIC 5DA3 Z14
　
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