S 765-013

 (6)  
Measure the voltage at pin 1 of the low pressure switch electrical connector. Make sure the voltage is 23 to 32v dc.

 S 865-078

 (7)  
Put the L ENGINE ANTI-ICE switch-light on the P5 panel in the ON position.

 S 765-015

 (8)  
Measure the voltage at pin 1 of the TAI valve electrical connector. Make sure the voltage is 23 to 32v dc.

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MAINTENANCE MANUAL

FLIGHT COMPARTMENT

WING AND ENGINE ANTI-ICE CONTROL PANEL

A

Engine Inlet TAI Test
Figure 501 (Sheet 1)

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MAINTENANCE MANUAL

SEE C
2
SEE D
1
HIGH
PRESSURE
SWITCH

ENGINE INLET TAI VALVE
LOW
PRESSURE
SWITCH

ELECTRICAL CONNECTOR ELECTRICAL CONNECTOR
ENGINE INLET THERMAL ANTI-ICE VALVE ANTI-ICE HIGH AND LOW PRESSURE SWITCHES C D
1 ENGINES WITHOUT RR SB 30-9534
2 ENGINES WITH RR SB 30-9534
Engine Inlet TAI Test
Figure 501 (Sheet 2)

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757 MAINTENANCE MANUAL
 S 765-052
 (9)  
Measure the voltage at pin 1 of the low pressure switch electrical connector. Make sure the voltage is 23 to 32v dc.

 S 865-079

 (10)
 Make sure the six EICAS circuit breakers on the P11 panel are closed.

 S 215-018

 (11)
 Make sure the EICAS message L TAI message is shown on the EICAS display.

 S 435-019

 (12)
 Connect the electrical connector to the low pressure switch.

 S 215-020

 (13)
　
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