(2)
AMM 25-22-02/401, Lower Ceiling Panel
D. Access
(1) Location Zone
253 Area Above Passenger Cable Ceiling, LH
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E. Prepare to Make a Copy of the Flight Data from the FDR
S 862-224
(1)
Supply electrical power (AMM 24-22-00/201).
S 862-183
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) On the overhead equipment panel, P11:
1) 11J7, FLIGHT RECORDER AC
2) 11J8, FLIGHT RECORDER DC
S 012-233
(3)
To get access to the FDR, lower the ceiling panel No. 1 above the aft galley (AMM 25-22-02/401).
S 422-226
(4)
Connect the connector of the HHDLU cable to the FDR ATE connector.
S 422-227
(5)
Install the removable media into the HHDLU.
S 862-184
(6)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) On the P11 panel:
1) 11J7, FLIGHT RECORDER AC
2) 11J8, FLIGHT RECORDER DC
S 862-185
(7)
At the P61 panel, set the ON-NORM-TEST switch on the flight recorder control panel (FRCP) to the ON position.
S 862-186
(8)
Push the power switch, installed adjacent to the HHDLU's RS-422 port.
NOTE: When power is first applied to the HHDLU, the HHDLU
____ display will not be on. After approxiamtely 30 seconds. The HHDLU display will show the main menu.
(a) Make sure the HHDLU display shows DNLD in the main menu.
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F. Procedure
S 912-187
(1) Push the DNLD key.
(a) Make sure the DOWNLOAD MENU shows on the display.
NOTE: The maximum quantity of flight data the HHDLU can
____ make a copy of is 27.2 hrs. If file DOWNLOAD01.DLU already exists on the removable media, the HHDLU will change the filename until a filename that is not used is found. To change the time or filename, push the TIME or FILE key.
S 862-228
(2) Push the GO key.
(a) If the HHDLU display shows DISK FULL, do these steps: 1) Push a key. 2) Make sure the DELETE FILE menu shows on the display. 3) Use the NEXT or PREV key to move up and down the filenames. 4) Push the DEL key to make a selection of the file to be
erased.
a) Make sure the CONFIRM DELETE menu shows on the display. 5) Push the YES key to erase the file. 6) Erase files until sufficient memory is available to make a
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