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R  (a) Do the test given in Para. 3.B. steps (3) and (4) and check that 
R  the upper ECAM DU, FOB does not show degraded. 
R  (18) If four serviceable fused connectors are not available: 
R  (a) Dry out all the unserviceable fused connectors as follows (Ref. 
R  TFU 28.42.00.039): 
R  1 Heat the applicable connectors to a temperature of 50 deg.C_ 
R  (122 deg.F) in either an oven or with a hot air blower. If you 
R  use a hot air blower make sure that no hot spots greater than 
R  50 deg.C (122 deg.F) can occur.

 201-299, 401-499, Aug 01/05 CES

R  NOTE : There is no limitation on the time the connectors can____ 
R  be held/kept at this temperature. 
R  (b) After a suitable time interval (when the water/moisture has dried 
R  out) do the wiring test given in step (14) to make sure that each 
R  connector is serviceable: 
R 
R  - those that are serviceable, install again 
R 
R  - replace those that are not serviceable.

 「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, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page D219
 201-299, 401-499, Aug 01/05 CES

R **ON A/C 106-149, 221-299, 401-499,

 TASK 28-42-00-810-876
 P/BSW (LED) FAULT Legends (With Lamp Drive Circuits in the FQIC 3QT P/N
 SIC5059-13-10) Show Dimly When They Should be Off
 WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
 1. Possible Causes
_______________
 - Read TFU 28.42.00.040
 2. Job Set-up Information
______________________
 Not Applicable
 3. Fault Confirmation
__________________
 A. General
 (1) Read TFU 28.42.00.040 or if not available read the short extract that follows:
 AIRBUS TFU : 28.42.00.040 short extract -------------------------------------------------------------------------------DESCRIPTION
 Without push button (P/B) selection, a slight illumination of the cockpit panel P/B switch 48QA (Auto feed fault P/B) was reported. The slight glow can only be observed during specific lighting conditions (example, at night). There is no associated warning.
 CONSEQUENCES There is no functional consequence. The partial P/B illumination can be easily distinguished from the normal illumination. In addition no ECAM warning is triggered.
 INVESTIGATION STATUS The FQIC provides a direct electrical grounding signal for the 5VAC Fault caption on 48QA indicator through a lamp drive circuit. The lamp drive circuit is modified in the new hardware FQIC standard PN SIC 5059-12-10 which introduces solid-state relays instead of electromechanical relays (weight and reliability improvement).
 In parallel, mod 31608 introduces LED cockpit P/B which has resulted in a
 load change within the lamp drive circuit.
 The slight glow can only be observed when FQIC SIC5059-13-10 is installed on post mod 31608 aircraft. It was concluded that the lamp drive circuit solid state device allows sufficient current to flow to slightly illuminate P/B LEDs. The P/B LEDs are much more sensitive to small current than
 「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 : 106-149, 221-299, 401-499, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page D220
 Aug 01/05 CES

 AIRBUS TFU : 28.42.00.040 short extract

 -------------------------------------------------------------------------------filament lamps.
 MAINTENANCE ADVICE No additional maintenance action is required.
 (2) No maintence work is necessary.
 4. Fault Isolation
_______________
 A. Procedure
 (1) Not Applicable.
 「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 : 106-149, 221-299, 401-499, ∞∞28-42-00∞∞∞∞∞∞∞∞∞∞Page D221
 Aug 01/05 CES

R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 TASK 28-42-00-810-877
 Troubleshooting from the FQIS STATUS REPORT (BITE) When a Channel Grade Shows 4
 WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
 1. Possible Causes
_______________
 - FQIC (3QT)

 - CADENSICON-RIB 2-3, L WNG TK INR GROUP A (19QT1)

 - PROBE-FUEL QTY NO 4 AND CIC,RIB 2-3 L WNG TK INR GRP B (24QT1)

　
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