on the Ground AMM 27-81-00-710-001 Operational Test of the Wing-Tip Brake and the Pressure-Off Brake AMM 27-84-52-000-001 Removal of the Pressure-Off Brake of the Slat Power Control Unit AMM 27-84-52-400-001 Installation of the Pressure-Off Brake of the Slat Power Control Unit AMM 27-84-53-000-001 Removal of the Valve Blocks 25CV, 26CV of the Power Control Unit (Slat) AMM 27-84-53-000-002 Removal of the Solenoid Valves of the Power Control Unit (Slat)
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 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 27-84-53-400-002 Installation of the Solenoid Valves of the Power Control Unit (Slat) ASM 27-81/03
 3. Fault Confirmation
__________________
 A. For the fault confirmation do the fault isolation.
 4. Fault Isolation
_______________
 A. Procedure
 (1) Do the reset of the WTB's (Ref. AMM TASK 27-80-00-869-004).
 (a) Do the operational test of the wing tip brake and the pressure-off brake (Ref. AMM TASK 27-81-00-710-001) to find the unserviceable system, then do the next step. CAUTION: DO NOT SHORT CIRCUIT THE WIRING TO THE SOLENOID VALVES.
 DAMAGE TO THE SFCC CAN OCCUR
 (2) Get access to the electrical connector on each valve block (Ref. AMM TASK 27-84-53-000-001):

 (a) At the connector receptacle, use a Multimeter to measure the resistance between pins K and L for each POB solenoid (Ref. ASM 27-81/03), which must be as follows:

 - for solenoid valves with Part No. 667C0000-02, between 71 Ohms and 84 Ohms

 - for solenoid valves with Part No. 903A0000-01, between 53 Ohms and 60 Ohms

 - for solenoid valves with Part No. 1106A0000-01 or 1111A0000-01, between 53 Ohms and 60 Ohms.

 (b) If the resistance value:

 - is not correct, replace the unserviceable POB Solenoid, (Ref. AMM TASK 27-84-53-000-002) and (Ref. AMM TASK 27-84-53-400-002)

 - is correct, do the next step.

 (3) Interchange SFCC-1 and SFCC-2 (Ref. AMM TASK 27-51-34-000-001) and (Ref. AMM TASK 27-51-34-400-001).

 (a) Do the test given in step (1)
 - if the fault moves to the opposite system, replace the SFCC-1 (21CV) or SFCC-2 (22CV) in the unserviceable system (Ref. AMM TASK 27-51-34-000-001) and (Ref. AMM TASK 27-51-34-400-001)

 - if the fault stays in the same system, replace the Pressure-off Brake,, (Ref. AMM TASK 27-84-52-000-001) and (Ref. AMM TASK 27-84-52-400-001).

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 (4) If the fault continues, replace the applicable POB Solenoid, (Ref. AMM TASK 27-84-53-000-002) and (Ref. AMM TASK 27-84-53-400-002).
 5. Close-up
________
 A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
 B. Put the aircraft back to its initial configuration.
 「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 ∞∞27-81-00∞∞∞∞∞∞∞∞∞∞Page 246
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 CES  Slats Command Sensor Unit Failure.

 1. Possible Causes
_______________
 - CSU (51CV)
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
TSM 27-51-00-810-828 Flaps Command Sensor Unit Failure.
 3. Fault Confirmation
__________________
 A. Procedure.
 (1) This fault has locked the wing tip brakes of the slat and flap system, no fault confirmation is necessary.
 (a) Do the fault isolation.
 4. Fault Isolation
_______________
 A. Procedure.
 (1) The cause of this fault is CSU (51CV) do (Ref. TSM TASK 27-51-00-810-828)
 「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 ∞∞27-81-00∞∞∞∞∞∞∞∞∞∞Page 247
　
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