S 215-153
 (26)
 Put the position selector switch for the alternate flaps/slats in the 15-unit detent and do the check that follows:

 (a)  
Make sure the position indicator needles are in the tolerance band for the 15-unit position, when the TE flaps stop at the 15-unit detent.

 S 215-118
 (27)
 Put the position selector switch for the alternate flaps/slats in the 20-unit detent.

 (a)  
Make sure the flaps go to the 20-unit position.

 (b)  
Make sure the TE slats move to the fully extended position.

 (c)  
Make sure the position indicator needles are in the tolerance band for the 20-unit position.

 S 215-119
 (28)
 Put the position selector switch for the alternate flaps/slats in the 25-unit detent and make sure the position indicator needles are in the tolerance band for the 25-unit position when TE flaps stop at the 25-unit position.

 S 215-120

 (29)
 Put the position selector switch for the alternate flaps/slats in the 30-unit detent and make sure the position indicator needles are in the tolerance band for the 30-unit position when TE flaps stop at the 30-unit position.

 S 215-121

 (30)
 Put the position selector switch for the alternate flaps/slats in the 25-unit detent, and make sure the position indicator needles are in the tolerance band for the 25-unit position when TE flaps stop at the 25-unit position.

 S 215-122

 (31)
 Put the position selector switch for the alternate flaps/slats in the 20-unit detent, and make sure the position indicator needles are in the tolerance band for the 20-unit position tolerance band when TE flaps stop at the 20-unit position.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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757
MAINTENANCE MANUAL

 S 215-123
 (32)
 Put the position selector switch for the alternate flaps/slats in the 15-unit detent, and make sure the position indicator needles are in the tolerance band for the 15-unit position when TE flaps stop at the 15-unit position and the LE slats move to the intermediate position.

 S 215-124

 (33)
 Put the position selector switch for the alternate flaps/slats in the 5-unit detent, and make sure the position indicator needles are in the tolerance band for the 5-unit position when TE flaps stop at the 5-unit position.

 S 215-125

 (34)
 Put the position selector switch for the alternate flaps/slats in the 1-unit detent, and make sure the position indicator needles are in 1-unit position tolerance band for the 1-unit position when TE flaps stop at the 1-unit position.

 S 215-126

 (35)
 Put the position selector switch in the UP-unit detent, and do the checks that follow:

 (a)  
Make sure the TE flaps move to the UP position before
 retraction of the slats.

 (b)  
Make sure the position indicator needles are between the 1-unit and UP-unit positions when the TE flaps stop at the UP position.

 (c)  
Make sure the LE slats then move to the UP position.

 (d)  
Make sure the position indicator needles are in the tolerance band for the UP-unit position, when the LE slats are in the UP position.

 S 865-127
 (36) Put the position selector switch for the alternate flaps/slats in the NORM position.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 06 Page 550 ú Dec 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 865-128
 (37)
 Push the arming switches for the alternate drives of the TE flap and LE slat to disarm the flap and slat alternate drives (switch lights will go off).

 S 215-129

 (38)
 Make sure the EICAS messages, FLAP/SLAT ELEC or FLAP ISLN VAL, do not show on the status display.

 S 215-130

 (39)
 Make sure the EICAS messages, FLAP/SLAT ELEC, FLAP ISLN VAL, or FLAP/SLAT BITE, do not show on the ECS/MSG display.
　
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