**ON A/C ALL

 TASK 32-42-00-810-926
 Loss of Normal Braking because of Damaged Tachometer Drive(s)
 1. Possible Causes
_______________
 - DRIVE ASSY-TACHOMETER,WHEEL 1 (2681GM)

 - DRIVE ASSY-TACHOMETER,WHEEL 2 (2680GM)

 - DRIVE ASSY-TACHOMETER,WHEEL 3 (2679GM)

 - DRIVE ASSY-TACHOMETER,WHEEL 4 (2678GM)

 - BSCU (10GG)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 32-42-34-000-001 Removal of the Braking/Steering Control Unit (BSCU) (10GG) AMM 32-42-34-400-001 Installation of the Braking/Steering Control Unit
 (BSCU) (10GG)
 AMM 32-42-68-000-003 Removal of the MLG Tachometer-Drive
 AMM 32-42-68-400-003 Installation of the MLG Tachometer-Drive

 3. Fault Confirmation
__________________
R
 A. Test
 Not applicable. R
 4. Fault Isolation
_______________
R
 A. Do a check of the Four Tachometer Drives for Damage
 (1) If you find damage on one ore more tachometer drives:
 - replace the damaged drive(s) (Ref. AMM TASK 32-42-68-000-003) and (Ref. AMM TASK 32-42-68-400-003): . DRIVE ASSY-TACHOMETER,WHEEL 1 (2681GM) . DRIVE ASSY-TACHOMETER,WHEEL 2 (2680GM) . DRIVE ASSY-TACHOMETER,WHEEL 3 (2679GM) . DRIVE ASSY-TACHOMETER,WHEEL 4 (2678GM)
 「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 ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page A235
 Aug 01/05 CES (2) If you find no damage on the tachometer drives:

 - replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
 B. After the subsequent flight, make sure that the fault does not continue.
 「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 ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page A236
 Aug 01/05R
 CES

R

 TASK 32-42-00-810-927
 Loss of Normal Braking on the Left MLG
 1. Possible Causes
_______________
 - BSCU (10GG)
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 32-42-34-000-001 Removal of the Braking/Steering Control Unit (BSCU) (10GG) AMM 32-42-34-400-001 Installation of the Braking/Steering Control Unit (BSCU) (10GG)
 3. Fault Confirmation
__________________
R
 A. Test
 Not applicable. R
 4. Fault Isolation
_______________
R
 A. If the fault is identified by the maintenance message BSCU: LEFT BRK LOSS:
 - Replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
 B. After the subsequent flight, make sure that the fault does not continue.

R

 TASK 32-42-00-810-928
 Loss of Normal Braking on the Right MLG
 1. Possible Causes
_______________
 - BSCU (10GG)
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 32-42-34-000-001 Removal of the Braking/Steering Control Unit (BSCU) (10GG) AMM 32-42-34-400-001 Installation of the Braking/Steering Control Unit (BSCU) (10GG)
 3. Fault Confirmation
__________________
R
 A. Test
 Not applicable. R
 4. Fault Isolation
_______________
R
 A. If the fault is identified by the maintenance message BSCU: RIGHT BRK LOSS :
 - replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) and (Ref. AMM TASK 32-42-34-400-001).
 B. After the subsequent flight, make sure that the fault does not continue.

R
 TASK 32-42-00-810-929
 Failure of the BSCU
 1. Possible Causes
_______________
 - BSCU (10GG)

 - BOARD-ANN LT TEST & INTFC (1LP)

 - AUTO BRK/MAX pushbutton switch

 - wiring

 - DRIVE ASSEMBLY
　
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