S 215-006

 (5)  
Make sure the EICAS message, WINDOW HEAT, shows on the top EICAS display on panel P2.

 S 215-005
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 S 865-007
 (6)  Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags:
 NOTE:____Some circuit breakers can be in one of two locations. These circuit breakers are shown with two locations.
 (a)  
6L13 or 6L15, PITOT HEAT CAPT MAIN

 (b)  
6L14 or 6L16, PITOT HEAT L AUX

 (c)  
6L17, L AOA HEAT

 (d)  
6L21, PITOT HEAT R AUX

 (e)  
6L22, PITOT HEAT F/O MAIN

 (f)  
6L23, R AOA HEAT

 (g)  
6L24, TAT PROBE HEAT

 D. Test - Flight Compartment Window Anti-Icing System
 S 865-008
 (1)  
Put the four WINDOW HEAT switches on the M10395 panel (panel P5) in the ON position.

 S 215-009

 (2)  
Make sure the white ON lights in each switch are on.

 NOTE: The amber INOP light in each switch must be off.
____
 S 215-010
 (3)  Make sure these messages do not show on the top EICAS display on panel P2:
 (a)  
L FWD WINDOW

 (b)  
L SIDE WINDOW

 (c)  
R FWD WINDOW

 (d)  
R SIDE WINDOW

 (e)  
WINDOW HEAT

 S 865-018
 (4)  
Hold the WING ANTI-ICE WINDOW/PROBE HEAT switch on the M10398 panel (panel P61) in the WINDOW/PROBE HEAT position.

 S 215-017

 (5)  
Make sure the amber INOP lights in each WINDOW HEAT switch come on after approximately three seconds.

 (6)  
Release the WING ANTI-ICE WINDOW/PROBE HEAT switch.

 S 215-015

 (7)  
Make sure each INOP light in the four WINDOW HEAT switches (panel P5) are off.

 S 865-016
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MAINTENANCE MANUAL
　
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