- if you did less than three resets: . do a check of the IDG1 oil filter(s) and the cover(s) for metal particles (Ref. AMM TASK 24-21-00-210-044).

 1 If you find metal particles:
_
 - replace the IDG (4000XU) (Ref. AMM TASK 24-21-51-000-040) and (Ref. AMM TASK 24-21-51-400-040).
 2 If you do not find metal particles:
_ a Drain the oil, replace the oil filter(s) and fill the IDG1
_ with oil (Ref. AMM TASK 24-21-00-920-040).
 b Do a reset of the DPI.
_
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 c Use a sticker, tag or other method to write on the IDG that
_
 you did the second or third reset of the DPI.
 CES

 TASK 24-21-00-810-816

 The Differential Pressure Indicator (DPI) of the IDG2 Oil Filter is Extended -
Alternate Procedure
 1. Possible Causes
_______________
 - IDG (4000XU)
 - oil filter(s)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 24-21-00-210-044 Inspection of the Filter Element(s) AMM 24-21-00-920-040 Drain IDG Oil System, Discard Filter Element(s) and Replenish AMM 24-21-51-000-040 Removal of the Integrated Drive Generator -IDG 1(2),(4000XU) AMM 24-21-51-400-040 Installation of the Integrated Drive Generator -IDG 1(2),(4000XU) TSM 24-21-00 P.Block 301 INTEGRATED DRIVE GENERATOR SYSTEM (IDG, GCU)
 3. Fault Confirmation
__________________
 A. Test
 Not applicable.

 4. Fault Isolation
_______________
 A. Do this trouble shooting procedure
 NOTE : You can find the DPI extended with CFDS fault messages.
____ First, do the trouble shooting for each CFDS fault messages. For this, refer to the CFDS index list.
 (1) If no message is found:
 - replace the IDG (4000XU) (Ref. AMM TASK 24-21-51-000-040) and (Ref.
 AMM TASK 24-21-51-400-040), - or do the alternate procedure (IDG DPI reset).
 B. Alternate Procedure (IDG DPI Reset)
 NOTE : The alternate procedure lets you do a reset of a DPI as an
____
 alternative to the replacement of the IDG.
 There are conditions related to this procedure:

 - A maximum of three resets is permitted.

 - After a DPI reset, the DPI check interval becomes:

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 . For normal operations: weekly or 100 FH (the one that comes
 first).
 . For Extended Range Twin-Engined Aircraft Operations (ETOPS):
 before each flight.
 If, after a DPI reset, the DPI does not extend again between two
 scheduled oil/filter changes, you can cancel the conditions
 related to this procedure:

 - The DPI reset status goes back to zero (a maximum of three more resets is permitted).

 - The DPI check interval goes back to the interval specified in the MPD. (Ref. TSM 24-21-00 P.Block 301)

 (1) If this is the first reset:
 (a) Do a check of the IDG2 oil filter(s) and the cover(s) for metal particles (Ref. AMM TASK 24-21-00-210-044):
 1 If you find metal particles:
_
 - replace the IDG (4000XU) (Ref. AMM TASK 24-21-51-000-040) and (Ref. AMM TASK 24-21-51-400-040).
 2 If yo do not find metal particles:
_ a Drain the oil, replace the oil filter(s) and fill the IDG2
_ with oil (Ref. AMM TASK 24-21-00-920-040).
 b Do a reset the DPI.
_
 c Use a sticker, tag or other method to write on the IDG that
_ you did the first reset of the DPI.
 (2) If this is not the first reset:
 (a) Do a check of the number of reset:
 - if you did three resets: . replace the IDG (4000XU) (Ref. AMM TASK 24-21-51-000-040) and (Ref. AMM TASK 24-21-51-400-040).

 - if you did less than three resets done: . do a check of the IDG2 oil filter(s) and the cover(s) for metal particles (Ref. AMM TASK 24-21-00-210-044).

 1 If you find metal particles:
　
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