- P/BSW-AIR INLET ANTI ICE VALVE ENG2 CTL (2DN2)
- wiring between the engine 2 air intake anti-ice valve (4000DN) and the circuit breaker (1DN2)
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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R AMM 30-21-00-710-002 Operational Test of the Engine Air Intake Ice
R Protection (with the Engines in operation) AMM 30-21-00-710-003 Operational Test of the NAI Valve AMM 30-21-49-210-001 Visual Inspection of the Anti-Ice System Tubes, Ducts, and Hoses AMM 30-21-51-000-040 Removal of the Engine Air-Intake Anti-Ice Valve (4000DN) AMM 30-21-51-400-041 Installation of the Engine Air-Intake Anti-Ice Valve (4000DN)
3. Fault Confirmation
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A. Test R Do the operational test of the engine air intake ice protection (Ref. AMM R TASK 30-21-00-710-002).
4. Fault Isolation
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A. Table of the circuit breakers used in this procedure:
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PANEL DESIGNATION IDENT. LOCATION
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122VU ANTI ICE/ENG/2 1DN2 W10
B. If the test confirms the fault:
- do a check of the overpressure indicator on the air intake anti-ice valve (4000DN).
(1) If the overpressure indicator is extended:
- replace the VALVE-ENG AIR INTAKE ANTI ICE (4000DN) (Ref. AMM TASK 30-21-51-000-040) and (Ref. AMM TASK 30-21-51-400-041).
「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 ∞∞30-21-00∞∞∞∞∞∞∞∞∞∞Page 209
May 01/05 CES
R R (2) If the overpressure indicator is not extended: - do the operational test of the NAI valve (Ref. AMM TASK 30-21-00-710-003).
R R R (a) If the NAI valve operates correctly: - do a check of the motive pressure line for correct condition (Ref. AMM TASK 30-21-49-210-001).
R (b) If the fault continues: - do a check of the status of the circuit breaker (1DN2):
1_ If the circuit breaker is closed: - make sure that there is no 28VDC at pin A/9 of the engine 2 air intake anti-ice valve (4000DN).
a_ If there is no 28VDC: - replace the VALVE-ENG AIR INTAKE ANTI ICE (4000DN) (Ref. AMM TASK 30-21-51-000-040) and (Ref. AMM TASK 30-21-51-400-041).
b_ If there is 28VDC: - make sure that there is no 28VDC at pin A/D2 of the ANTI ICE/ENG 2 pushbutton switch (2DN2). . If there is 28VDC: - replace the P/BSW-AIR INLET ANTI ICE VALVE ENG2 CTL (2DN2). . If there is no 28VDC: - do a check and repair the wiring between the engine 2 air intake anti-ice valve (4000DN) and the circuit breaker (1DN2).
2_ If the circuit breaker (1DN2) is open: - close the circuit breaker (1DN2).
C. Do the operational test given in Para. 3.
PROBE ICE PROTECTION - FAULT ISOLATION PROCEDURES
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TASK 30-31-00-810-801 Loss of the PHC 1
1. Possible Causes
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- PHC-1 (6DA1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 30-31-00-710-001 Operational Test of the Probe Ice Protection 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)
3. Fault Confirmation
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A. Test
(1) Do the operational test of the probe ice protection (Ref. AMM TASK 30-31-00-710-001).
4. Fault Isolation
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A. If the test gives the maintenance message PHC 6DA1:
- replace the PHC-1 (6DA1), (Ref. AMM TASK 30-31-34-000-002) and (Ref. AMM TASK 30-31-34-400-002).
Failure of the Pitot Probe
1. Possible Causes
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- PROBE-PITOT, 1 (9DA1)
- PHC-1 (6DA1)
- wiring from the PHC 1 (6DA1) to the pitot probe 1 (9DA1)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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