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757 MAINTENANCE MANUAL
 TASK 31-31-03-963-006
 3.  Flight Data Acquisition Unit Diskette Replacement (Fig. 301)_________________________________________________
 A.  General
 (1)  
The FDAU is in the main equipment center on shelf E3-3.

 (2)  
If the diskette is installed in the FDAU while the power is on, the FDAU will do a format of the diskette. The FDAU will erase all the data on the diskette.

 (3)  
When a diskette is in the FDAU and the power is off, then, when you supply power, these effects can occur:

 (a)  
The FDAU will do a format of a new diskette.

 (b)  
The FDAU will not do a format of a diskette that is already formatted. The FDAU will not erase the data on the diskette.

 B.  References
 (1)  AMM 24-22-00/201, Electrical Power Control
 C.  Access
 (1)  Location Zone
 119BL Main Equipment Center E3-3

 D.  Procedure
 S 863-008
 CAUTION: OPEN THE FLIGHT RECORDER CIRCUIT BREAKERS BEFORE YOU REMOVE OR
_______ INSTALL A DISKETTE. THE FDAU WILL DO A FORMAT OF THE DISKETTE IF THE FDAU HAS POWER WHEN YOU REMOVE OR INSTALL THE DISKETTE. A FORMAT OF THE DISKETTE WILL ERASE ALL THE DATA ON THE DISKETTE.
 (1)  Open these circuit breakers:
 (a)  On the overhead equipment panel P11: 1) 11J7, FLIGHT RECORDER AC 2) 11J8, FLIGHT RECORDER DC
 S 023-004
 (2)  Remove the diskette.
 (a)  Open the diskette door on the side of the FDAU. 1) If the diskette door is blocked, do these steps:
 a)  Loosen the screws on the top and bottom of the FDAU face.
 NOTE:  The face of the FDAU moves on hinges.
____
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MAINTENANCE MANUAL

 b) Pull the face of the FDAU forward to get access to the
 diskette door.
 2) Loosen the screw on the diskette door.
 3) Open the diskette door.

 (b)  
Push the eject button on the diskette drive.

 (c)  
Remove the diskette from the diskette drive.

 S 423-007
 (3)  Install the diskette.
 (a)  
Put a new diskette into the diskette drive.

 (b)  
Push the diskette into the diskette drive until you feel a click.

 (c)  
Close the diskette door.

 (d)  
　
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