(2)  
The function switch is normally set to the NORM position. In this position, power to the system is automatically controlled through the system power relays. The ON position is used manually to turn on the DFDAU and the DFDR. The TEST position is spring-loaded and is used to turn on power to the DFDAU and the DFDR for testing purposes.
 (3)  
The OFF light on the FRCP comes on when the DFDR and/or the DFDAU fails, the system is not turned on, or in the absence of electrical power.
 B.  GUN 001-008, 010, 101 PRE-EO B531006; GUN 009;
 Flight Data Entry Panel (FDEP)
 (1)  The FDEP is located on the right side panel. It contains all operating controls and indicators as well as logic circuits required to insert documentary data into the system. The following controls, switches, indicators and their functions are:
 (a)  Thumbwheel switches - set month, day, takeoff gross weight, flight number, flight leg and pilot identification.
 
 GUN 001-050, 052-999 ú  31-31-00
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757 
MAINTENANCE MANUAL
GUN 
GUN
D04480
Flight Data Recorder System - Component Location 
Figure 1 (Sheet 1)
GUN 001-050, 052-999 ú
 31-31-00
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757 
MAINTENANCE MANUAL
LEFT MAIN WHEEL WELL . 3-AXIS ACCELEROMETER 
SEE C 
RIGHT MISCELLANEOUS RELAY PANEL (P37) 
. SYSTEM 2 AIR/GROUND RELAY K206 AND K207
. RIGHT ENGINE START TO STOP RELAY  
. FLIGHT RECORDER/EFIS INPUT SWITCHING  
RELAY  LEFT MISCELLANEOUS RELAY  
. FLIGHT RECORDER/ADC INPUT SWITCHING RELAY  RACK E3-3 . DIGITAL FLIGHT  PANEL (P36) . LEFT ENGINE START  
DATA ACQUISITION  TO STOP RELAY  
UNIT  
SEE  D 
3-AXIS ACCELEROMETER
AMBER 
FAULT
C 
MONITOR 
LIGHT
GUN 
STATUS
GUN 
PROGRAM GUN IDENT 
READ 
PLATE 
FAIL
GUN GUN GUN 
CAUTION 
GUN 
ACMS 
DFDR FAIL DFDR
GUN 
DFDAU
GUN 
ACMS DFDAU 
GUN GUN GUN DIGITAL FLIGHT DATA 
DIGITAL FLIGHT DATA GUN ACQUISITION UNIT ACQUISITION UNIT
DIGITAL FLIGHT DATAGUN 
3
D 1 ACQUISITION UNIT, M138 D GUN 
GUN 1 GUN 001-008, 010, 101 PRE-EO B531006; GUN 009 D 2 
GUN 
2 
GUN 001-008, 010, 101 POST-EO B531006; 
GUN 
3 
GUN 102-999 
GUN 
Flight Data Recorder System - Component Location Figure 1 (Sheet 2) 
D04479
 
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757 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址:757 AMM 飞机维护手册 仪表 CHAPTER 31 - INSTRUMENTS 1(37)