(a) Examine the FLSS STATUS page. Look for one (or more) of the messages that follow:
- L LO LEVEL SENSOR 15QJ1
- R LO LEVEL SENSOR 16QJ2
- FLSCU1 7QJ
- FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
- is not shown, do step (2)
- is shown, trouble shoot the LRU(s) before you do step (2). Refer to the Fault Symptoms List/28-CFDS for the related Task number.
(2) Do the Functional BITE Test of the Intercell Transfer Valves (Ref. AMM TASK 28-15-00-740-002).
NOTE : The COMMAND FLSS BITE option does not test the Intercell
____
Transfer Valves (ICTVs).
NOTE : The ICTVs are motor driven and the electrical power for these
____ circuits is supplied from 206PP, 28VDC, BUS 2 (Ref. ASM 28-15/02) . The ICTVs will not operate on battery power.
(a) Examine the FLSS STATUS page. Look for the (right wing forward ICTV) message XFR VALVE 29QM/72QM/10QP.
(b) If the message:
- is shown, do Para. 4.A.
- is not shown, no work steps are necessary.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 214
201-299, 401-499, Aug 01/05 CES 4. Fault Isolation
_______________
A. Procedure
(1) Make sure that the C/B 4QP is closed.
(2) Open the C/B 3QP.
(3) Get access to the ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) (Ref. AMM TASK 28-15-51-000-001).
(4) Disconnect the electrical connector 10QP-A from the ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP).
(5) Do a test, with a multimeter, to see if 28VDC is available at pin A of the connector 10QP-A (Ref. ASM 28-15/02).
(a) If the 28VDC:
- is available, do step (6)
- is not available, continue at step (7).
(6) Do a check of and replace, if necessary, the ACTUATOR-TRANSFER VALVE, R FWD SPAR (10QP) (Ref. AMM TASK 28-15-51-000-001) and (Ref. AMM TASK 28-15-51-400-001).
(a) When the actuator is removed from the aircraft make sure that the transfer valve drive shaft and valve are free to rotate.
(b) Repair/replace all the unserviceable items found in (a).
(c) Do the test given in Para. 3.B.(2).
(7) Close the C/B 3QP.
(8) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) terminals A2 and X1 (Ref. ASM 28-15/02).
(a) If the 28VDC:
- is not available, do step (9)
- is available, continue at step (10).
(9) Do a wiring check of the aircraft wiring (Ref. ASM 28-15/02) between the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP) and the C/B-FUEL/XFR VALVE 2/WING/L (3QP).
(a) Repair all the unserviceable wiring and connectors (Ref. ESPM 20-00-00).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 215
201-299, 401-499, Aug 01/05 CES (b) Do the test given in Para. 3.B.(2).
(10) Do a test, with a multimeter, to make sure that 28VDC is available at the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) terminals A2 and X1 (Ref. ASM 28-15/02).
(a) If the 28VDC:
- is not available, do step (11)
- is available, continue at step (12).
(11) Do a wiring check of the aircraft wiring (Ref. ASM 28-15/02) between the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP) and the C/B-FUEL/XFR VALVE 2/WING/R (4QP).
(a) Repair all the unserviceable wiring and connectors (Ref. ESPM 20-00-00).
(b) Do the test given in Para. 3.B.(2).
(12) If the fault continues:
(a) Do a check of and replace, if necessary, the relays that follow:
- the RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
- the RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
- the RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP).
(b) Do the test given in Para. 3.B.(2).
(13) If the fault continues:
(a) Do a wiring check of the aircraft wiring (Ref. ASM 28-15/02) between:
- the ACTUATOR connector 10QP-A, pin A and the RELAY 8QP, terminal A3
- the ACTUATOR connector 10QP-A, pin A and the RELAY 7QP, terminal B3 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油1(26)
