Flight Data Fault Isolation
Figure 101
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A 737-300/400/500MAINTENANCE MANUAL
2. Master Caution Light Activation
_______________________________
A. When the engines start, the flight data recorder OFF light can come on intermittently and the MASTER CAUTION light may come on. This is the usual operation of the system. Push the MASTER CAUTION light to reset it before you continue the test of the flight data recorder system.
3. Prepare for Trouble-Shooting
____________________________
A. Procedure
(1)
Supply electrical power (AMM 24-22-00/201).
(2)
Make sure these circuit breakers are closed:
(a) P18 Panel
1) FLIGHT RECORDER AC
2) FLIGHT RECORDER DC
(3)
Make sure the panel lights operate correctly.
(4)
Make sure the systems that supply data to the flight data recorder operate correctly.
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A
737-300/400/500MAINTENANCE MANUAL
DIGITAL FLIGHT DATA RECORDER - MAINTENANCE PRACTICES
____________________________________________________
1. General_______
A. This procedure contains:
(1)
A copy recorder procedure for the Sundstrand copy recorder.
(2)
A downloading procedure for the Hand Held Download Unit (HHDLU).
TASK 31-24-00-972-125
2. BEJ 001-112; Sundstrand Copy Recorder Procedure__________________________________
A. General
(1)
The copy recorder gives a fast and easy procedure to get the flight data from the Sundstrand tape based flight data recorder. When you use the copy recorder it is not necessary to remove the flight data recorder. It is also not necessary to remove the tape reel from the flight data recorder. Thirty minutes are necessary to make a full copy of the data. The copy recorder attaches to the ATE connector on the front of the flight data recorder.
(2)
When the copy recorder starts to make a copy, it writes a sound on the data tape. Then the copy recorder winds the data tape to the start. The data tape moves forward and the copy recorder writes all eight tracks at the same time. When the copy recorder completes the data tape, it winds the data tape to the position of the sound.
(3)
It is necessary for the copy recorder to have an input voltage of 115 VAC 400Hz. The airplane supplies this voltage through the connection between the copy recorder and the flight data recorder.
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 25-21-71/401, Lowered Ceiling Panels
C. Special Tools and Equipment
(1)
UFDR Copy Recorder - Sundstrand P/N 981-6024-002
(2)
Cable Assembly - Sundstrand P/N 704-1112-001
(furnished with the copy recorder)
(3)
Magnetic Tape - Sundstrand P/N 617-4149-001
(furnished with the copy recorder)
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