S 864-045
(12) ON GUN 105-999;
Set the clock for the correct time and date:
(a)
Set the SET switch to:
1) HSD, to set the hours.
2) MSM, to set the minutes.
3) RUN, to set clock to operate.
(b)
Push the DATE switch.
(c)
Set the SET switch to:
1) HSD, to set the date.
2) MSM, to set the month.
3) HLDY to set the year.
4) RUN, to set clock to operate.
(d)
Push the DATE switch.
S 864-016
(13)
Let the clock operate for two minutes.
S 204-017
(14)
Make sure the clock shows the correct time.
D. Put the airplane back to the usual condition.
S 864-018
(1) Remove electrical power if it is not necessary (AMM 24-22-00).
ú
31-25-01
ALL ú ú 01 Page 404 ú Dec 20/93
A
757 MAINTENANCE MANUAL
FLIGHT DATA RECORDER SYSTEM - DESCRIPTION AND OPERATION
_______________________________________________________
1. General (Fig. 1)_______
A. The digital flight recorder system records selected flight parameters including FAA mandatory parameters. The recording contains data for the last 25 hours of airplane operation.
B. GUN 001-008, 010, 101 PRE-EO B531006; GUN 009; The Flight Data Entry Panel (FDEP) is also installed on the flight recorder system.
C. GUN 001-008, 010, 101 POST-EO B531006; GUN 102-999; The Flight Recorder Control Panel (FRCP) is also installed on the flight recorder system.
D. All input signals are connected to the DFDAU. The DFDAU conditions the input signals to produce a digital output which is sent to the DFDR for recording. The recorded data is stored in a crash protected container inside the DFDR.
E. The system is turned on automatically when the airplane is in flight, or on the ground when an engine is running. The system may also be turned on manually or tested by means of a switch on the FDEP or the FRCP.
F. The flight recorder system is monitored continuously by BITE during operation. System failures are displayed on the FRCP or the FDEP and on the DFDAU and EICAS.
2. Component Details (Fig. 1)_________________
A. GUN 001-008, 010, 101 POST-EO B531006; GUN 102-999;
Flight Recorder Control Panel (FRCP)
(1)
The flight recorder control panel (FRCP) provides system manual power control and indicates system status. The control panel consists of a function (ON-NORM-TEST) switch, a relay and OFF annunciator.
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