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 (3)
 If the fault continues:

 -replace the VALVE-FAN AIR, ENG1 (9HA1) (Ref. AMM TASK 36-11-54-000-001) and (Ref. AMM TASK 36-11-54-400-001).

 (4)
 If the fault continues:

 -replace the BMC-1 (1HA1) (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
 B. If the test gives the maintenance message FAN AIR-V 9HA1 OR THRM 7170HM1 OR SENSE LINE:
 -do the trouble shooting procedure for the Fan Air Valve of the Engine 1 Blocked in the Closed Position (Ref. TSM TASK 36-11-00-810-847)
 C. After the subsequent flight, make sure that the fault does not continue.
 1
 -EFF : ALL

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 --Feb 01/05R ---CES -

 Fan Air Valve of the Engine 2 Blocked in the Open Position
 1. Possible Causes_______________
 -VALVE-FAN AIR, ENG2 (9HA2)
 -BMC-2 (1HA2)
 -THERMOSTAT-FAN AIR VALVE CTL (7170HM2)
 -
wiring from the fan air valve (9HA2) to the BMC2 (1HA2)

 -
wiring between pin A/3 of the fan air valve and the ground terminal

 2. Job Set-up Information______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 36-11-34-000-001  Removal of the BMC (1HA1, 1HA2)
 AMM 36-11-34-400-001  Installation of the BMC (1HA1, 1HA2)
 AMM 36-11-43-000-001  Removal of the Fan Air Valve Control Thermostat (7170HM1, 7170HM2)
 AMM 36-11-43-400-001  Installation of the Fan Air Valve Control Thermostat (7170HM1, 7170HM2)
 AMM 36-11-54-000-001  Removal of the Fan Air Valve (9HA1,9HA2)
 AMM 36-11-54-400-001  Installation of the Fan Air Valve (9HA1,9HA2)
 TSM 36-11-00-810-848  Fan Air Valve of the Engine 2 Blocked in the Closed Position
 3. Fault Confirmation__________________
 A. Not applicable.
 4. Fault Isolation_______________
 A. If the fault symptom is identified by the maintenance message FAN AIR V 9HA2 OR THRM 7170HM2:
 (1)
 If the temperature regulation is abnormally low (less than 180.C during climb/cruise:

 -replace the THERMOSTAT-FAN AIR VALVE CTL (7170HM2) (Ref. AMM TASK 36-11-43-000-001) and (Ref. AMM TASK 36-11-43-400-001).

 (2)
 If the fault continues:

 -do a check and repair the wiring from the fan air valve (9HA2) to the BMC2 (1HA2), pins A/1 and A/5 to pins AA/12A and AA/13A.
 (a) If the fault continues:
 -do a check and repair the wiring between pin A/3 of the fan air valve and the ground terminal.
 1
 -EFF : ALL

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 --Feb 01/05R ---CES -

 (3)
 If the fault continues:

 -replace the VALVE-FAN AIR, ENG2 (9HA2) (Ref. AMM TASK 36-11-54-000-001) and (Ref. AMM TASK 36-11-54-400-001).

 (4)
 If the fault continues:

 -replace the BMC-2 (1HA2) (Ref. AMM TASK 36-11-34-000-001) and (Ref. AMM TASK 36-11-34-400-001).
 B. If the test gives the maintenance message FAN AIR-V 9HA2 OR THRM 7170HM2 OR SENSE LINE:
 -do the trouble shooting procedure for the Fan Air Valve of the Engine 2 Blocked in the Closed Position (Ref. TSM TASK 36-11-00-810-848)
 C. After the subsequent flight, make sure that the fault does not continue.
 1
 -EFF : ALL

-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page A202
 --Feb 01/05R ---CES -

 Fan Air Valve of the Engine 1 Blocked in the Closed Position
 1. Possible Causes
_______________
 -THERMOSTAT-FAN AIR VALVE CTL (7170HM1)
 -VALVE-FAN AIR, ENG1 (9HA1)
 -
wiring from the fan air valve to the BMC1

 -
wiring between pin A/3 of the fan air valve and the ground terminal

 -
wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
　
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