CAUTION: DO NOT OPERATE ALTERNATE DRIVE MOTOR FOR LONGER THAN FOUR
_______ MINUTES. PERMIT AT LEAST 20 MINUTES BETWEEN OPERATION SO THAT THE MOTOR CAN BECOME COOL. DAMAGE CAN OCCUR IF THE MOTOR BECOMES TOO HOT.
 (21) Make sure that this P6 panel circuit breakers is closed:
 (a) 6D23, ALTN FLAP PWR
 S 865-171
 (22)
 Put the TE switch on the instrument panel in the ALTN position.

 S 865-172

 (23)
 Set the ALTN FLAPS control on the instument panel to the 25 position.

 NOTE: Permit time for the flaps to reach the 25-unit position.
____
 S 865-173
 (24) Make sure that these switches are activated:
 NOTE:____The switches can be activated with a sensor actuator. The actuator is to be held within 0.15 inches of the sensor. Masking tape or the equivalent can be used to hold the actuator in the necessary position. When the switches are activated, the switches will be in a target near condition.
 (a)
S10066 and S10079 - Nose Gear Down

 (b)
S10065 and S10078 - Nose Gear Locked

 (c)
S10057 and S10070 - Left Gear Down and Locked

 (d)
S10061 and S10074 - Right Gear Down and Locked

 S 755-038
 (25) Make sure the red CONFIG light is not on.
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MAINTENANCE MANUAL

 S 755-039
 (26)
 Make sure the WARNING lights are not on.

 S 755-040

 (27)
 Make sure the EICAS message, GEAR NOT DOWN, does not show on the top display.

 S 845-177
 WARNING: PREPARE THE SAFETY-SENSITIVE SYSTEMS FOR THE AIR MODE BEFORE
_______ YOU OPEN THE AIR/GROUND CIRCUIT BREAKERS. IN THE AIR MODE, MANY OF THE AIRPLANE SYSTEMS CAN OPERATE AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (28)
 Prepare the safety-sensitive systems for air mode simulation (AMM 32-09-02/201).

 S 865-178

 (29)
 Open this P11 panel circuit breaker:

 (a)  11C30, LANDING GEAR POS SYS 1
 S 755-041
 (30)
 Make sure the red CONFIG light comes on.

 S 755-042

 (31)
 Make sure the WARNING lights come on.

 S 755-043

 (32)
 Make sure the siren aural warning comes on.

 S 755-044

 (33)
 Make sure the EICAS message, GEAR NOT DOWN, shows on the top display.

 S 865-183

 (34)
 Close this P11 panel circuit breaker:

 (a)  
GUN 001-010, 051 POST-SB 78-32 OR SB 78-35;
 GUN 101-104 POST-SB 78-32;
　
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