(2) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
「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 ∞∞29-22-00∞∞∞∞∞∞∞∞∞∞Page 202
Aug 01/05 CES
(3) Look for fault indications on the upper ECAM DU and examine the RAT.
NOTE : The message RAT OUT (RAT not extended) comes on the Memo page
____ only in flight, this causes the message HYD RAT FAULT on the upper ECAM DU on ground.
4. Fault Isolation
_______________
R **ON A/C 001-049, 051-061, 101-105, 201-203,
A. If the upper ECAM DU shows the message HYD RAT FAULT and the RAT is extended:
- do a check for 28 VDC between: the JACK-EJECTION, RAT (2454GE) connectors A/A and A/B, B/A and B/B (Ref. ASM 29-22/01).
NOTE : The solenoid valves are made unserviceable, if 28 VDC is supplied
____
for more than 2 minutes.
(1) If there is no 28 VDC:
WARNING : MAKE SURE THAT THE RAT TRAVEL RANGE IS CLEAR BEFORE YOU
_______
EXTEND/RETRACT THE RAT.
- retract the RAT (Ref. AMM TASK 29-22-00-869-002) and extend it again with the EMER ELEC POWER/MAN ON/AUTO P/BSW (24XE) on panel 21VU.
- retract the RAT (Ref. AMM TASK 29-22-00-869-002) and extend it again with the RAT MAN ON P/BSW (2805GE) on panel 40VU.
(a) If the operation of the RAT is satisfactory, no further actions are necessary.
NOTE : The uncommanded extension was due to a mechanical fault of
____ the ejection jack or a spurious supply to one of the two deploy solenoids.
(2) If there is 28 VDC at one or both solenoids:
- do a check for 28 VDC between:
- the P/BSW 2805GE pin 4 and ground
- the P/BSW 24XE pin 7 and ground (Ref. ASM 29-22/01).
(a) If there is 28 VDC:
- replace the related P/BSW.
(b) If there is no 28 VDC:
- do a check and repair the wiring between:
- the P/BSW 2805GE pin 4 and the JACK-EJECTION, RAT (2454GE) connector B/B
- the P/BSW 24XE pin 7 and the JACK-EJECTION, RAT (2454GE) connector A/B (Ref. ASM 29-22/01).
「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 ∞∞29-22-00∞∞∞∞∞∞∞∞∞∞Page 203
May 01/05 CES
(3) If the fault continues:
- do the trouble shooting procedure of the automatic deployment logic (Ref. TASK 24-24-00-810-806).
(4) If the fault continues:
- replace the JACK-EJECTION, RAT (2454GE) (Ref. AMM TASK 29-22-53-000-001) and (Ref. AMM TASK 29-22-53-400-001).
B. If the upper ECAM DU shows the message HYD RAT FAULT and the RAT is not extended:
- do a check of the RAT triangle indication shown on the lower ECAM DU.
(1) If the RAT triangle is shown in green:
- disconnect the electrical connector (2454GE-C) from the JACK-EJECTION, RAT (2454GE) and look on the lower ECAM DU.
(a) If the RAT FAULT message is no longer shown:
1 replace the JACK-EJECTION, RAT (2454GE) (Ref. AMM TASK 29-22-
_ 53-000-001) and (Ref. AMM TASK 29-22-53-400-001).
(b) If the RAT FAULT message is still shown:
- do a check of the wiring for a GND connection between: -the JACK-EJECTION, RAT (2454GE) connector C/C and the SDAC connector AA/03D and repair as necessary (Ref. ASM 29-22/01) and (Ref. ASM 31-54/02) .
(2) If the RAT triangle is shown in amber:
- examine the red warning light on the RAT control panel (2815GE).
NOTE : Do a test of the red warning light with the TEST switch to
____ make sure that the light is serviceable.
(a) If the red warning light is not on:
- do a check for 28 VDC between the MODULE-RAT GND CHECK (2027GE) connector A/A and connector A/B (Ref. ASM 29-22/01) .
1 If there is 28 VDC:
_
- do a check and repair the wiring between:
- the MODULE-RAT GND CHECK (2027GE) connector A/A and the CTL UNIT-RAT GND (2815GE) connector S (Ref. ASM 29-22/01).
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 液壓(81)
