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PRIME SYMBOL1NAMESOURCE REMARKS
ECS/MSGFORMAT IDENTIFIER EICAS 
INDICATES ENVIRONMENTAL CONTROLCOMPUTER 
SYSTEM/MESSAGES FORMATNON-VOLATILE MEMORYEICAS 
INDICATES EITHER THE AUTO EVENTAUTO EVENT OR MAN EVENT
IDENTIFIER COMPUTER OR MANUAL EVENT MEMORY HAS BEENSELECTED FOR DISPLAY
DUCT TEMP 
302817
TRIM VALVE 
0.75 0.80 0.00
PACK OUT 
23 
PRECOOL OUT 
193196 
DUCT PRESS 
4042
PACK FLOW 
62 64
COMPACTED PAGE
(TOP DISPLAY)
TEMP VALVE 
0.75 0.80 
RAM IN DOOR
0.62 0.71 
SEE 
SEE
AFT CABIN TEMP
ENVIRONMENTAL CONTROL SYSTEM
DUCT TEMPERATURETRIM VALVE POSITIONPACK OUTLET TEMPERATUREPRECOOLER OUTLET
TEMPERATUREDUCT PRESSUREINLET PACK AIRFLOW
TEMPERATURE CONTROL VALVEPOSITIONRAM INLET DOOR POSITION
AUTO EVENT FAILURE MESSAGE(EXAMPLE) 
L AND R PACK
CONTROL UNIT
L AND R PACK
CONTROL UNIT
L AND R PACK
CONTROL UNIT
L AND R PACK
CONTROL UNIT
L AND R PACK
CONTROL UNIT
L AND R PACK
CONTROL UNIT
L AND R PACK
CONTROL UNIT
L AND R PACK
CONTROL UNIT
VARIOUS -60 TO +200`C
0 (CLOSED) TO 1.0 (OPEN)
-60 TO +200`C
-60 TO +200`C
0 TO 100 PSI
0 TO 2500 CUBIC FEET/MINUTE
0 (CLOSED) TO 1.0 (OPEN)
0 (OPEN) TO 1.0 (CLOSED)
INDICATES CONDITION THAT CAUSED
ECS AUTO EVENT
EICAS COMPUTER IS SOURCE FOR FUNCTION IDENTIFIERS. IDENTIFIERS ARE LIGHT BLUE IN COLOR, DIGITAL READOUTS AREWHITE IN COLOR.
SEE TEXT FOR EXPLANATION
PARAMETER VALUES AND INDICATIONS ARE FOR ILLUSTRATION PURPOSES ONLY.
ECS/MSG PAGE(BOTTOM DISPLAY)
MAINTENANCE MESSAGES
PAGE INDEX 
EICAS
INDICATES OVERFLOW OF MAINTENANCE
PAGE 2 
COMPUTER 
MESSAGES
EICAS Displays - Compacted and ECS/MSG Formats
Figure 5A
A 
757 
MAINTENANCE MANUAL
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A 
757 
MAINTENANCE MANUAL
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PERFORMANCE DISPLAYS
GROSS WT 187.6  AIRPLANE GROSS WEIGHT  FMC SHOWN IN 1000 LBS 
MACH ALT21030TAT 0.615245 +12CAS  AIR DATA PARAMETERS  MACH-ADCTAT-TMC/ADCALT-ADCCAS-ADC  - ALT (-1000 TO +50,000 FT)- MACH (0.1 TO 1.0 MACH)LIMITS - CAS (30 TO 450 KNOTS)- TAT (-60 TO +90`C)  
CMDEPR1.761.76 EPR COMMANDED  EEC  LIMITS - 0.965 TO 2.05 EPR  
ACTEPR 0.9021.284 EPR ACTUAL  EPRTRANSMITTER LIMITS - 0.965 TO 2.05 EPR 
 
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