(b)  
Press the AUTO-EVENT READ switch on the P61 panel.

 (c)  
Press and hold the ERASE switch for 3 seconds.

 NOTE: If PAGE indication show more pages of messages,
____ press and hold the ERASE switch for 3 seconds. The next page of messages will then show. Continue until no PAGE indication shows.
 (d)  
Press the ECS/MSG switch to view all maintenance messages.

 (e)  
Make sure the EICAS message, AFT CARGO FAN, does not show on the lower display.

 S 866-234
 (11) Close these circuit breakers on the P6 panel and remove DO-NOT-CLOSE tags:
 (a)  
6H5, FIRE EXTINGUISHING CARGO BTL 1

 (b)  
6H6, FIRE EXTINGUISHING CARGO BTL 2

 TASK 26-23-01-716-180
 5.  Left and Right Air Conditioning Recirculation System Stops and Overboard________________________________________________________________________ Exhaust Valve (OEV) Opens After the FWD ARMED Switch Activation Check_____________________________________________________________________
 A.  Do a check of the Left and Right Air Conditioning Recirculation System Stops and the Overboard Exhaust Valve Opens After the FWD ARMED Switch Activation Check
 S 866-235
 (1) Make sure these circuit breakers on the P11 panel are closed:
 (a)  
11P14, RECIRC CARGO FIRE CONT LEFT or RECIRC FAN L

 (b)  
11P23, RECIRC CARGO FIRE CONT RIGHT or RECIRC FAN R

 S 866-236
 (2) Make sure these circuit breakers on the P70 panel are closed:
 (a)  
70B16, L RECIRC FAN CONT

 (b)  
70C10, RECIRC FAN L

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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MAINTENANCE MANUAL

 (3)  S 866-237Make sure these circuit breakers on the P37 panel are closed: (a) 37D7, R RECIRC FAN CONT (b) 37J5, RECIRC FAN R
 (4)  S 866-315Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags: (a) 6H5, FIRE EXTINGUISHING CARGO BTL 1 (b) 6H6, FIRE EXTINGUISHING CARGO BTL 2
 (5)  S 716-238Make sure the ground air is not in operation.
 (6)  S 746-398Make sure the EQUIP COOLING ALTN switch-light on the P5 panel is at the NORMAL position.
 (7)  S 746-239Make sure the L and R PACK selectors on the P5 panel are in the OFF position.
 (8)  S 866-240Push the RECIRC FAN switches (L and R) on the P5 panel, to the on position . (a) Make sure the ON lights in the L and R RECIRC FAN switches come on.

 S 716-242
 (9)  
Listen for fan noise or feel for air flow at any passenger cabin conditioned air outlet to make sure the recirculation fan operates.

 S 866-243

 (10)
 Push the FWD Cargo Fire switch on the APU/CARGO Fire Control panel, P8.

 (a)  
Make sure the FWD ARMED switchlight is ON.

 (b)  
Make sure the L and R RECIRC INOP lights come on.

 (c)  
Listen for the fan noise or feel for air at the outlet to make sure the recirculation fans (L and R) stop.

 (d)  
Make sure that the EICAS messages, L RECIRC FAN and R RECIRC FAN, are shown on the top display.

 S 866-248
 (11) Push the FWD Cargo Fire switch and release.
 (a)  
Make sure the FWD ARMED switchlight is OFF.

 (b)  
Make sure the L and R RECIRC FAN INOP lights go off.

 (c)  
Make sure the EICAS messages, L RECIRC FAN and R RECIRC FAN, do not show on the top display.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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757 MAINTENANCE MANUAL
 (d)  Make sure the fan noise comes on again and feel for the air flow at any passenger cabin conditioned air outlet.
 S 866-421 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE PERSONS
　
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