(a)  
6D23, ALTN FLAP PWR

 S 215-076
 (29)
 Put the position selector switch for the alternate flap/slat in the 1-unit detent, and do the checks that follow:

 (a)  
Make sure the TE flaps move to the 1-unit position and slats move to the intermediate position.

 (b)  
Make sure TRAILING EDGE light is off and the EICAS message, TE FLAP DISAGREE is not shown on the display unit.

 S 865-077
 (30)
 Open this circuit breaker on the P6 panel and attach DO-NOT-CLOSE tag:

 (a)  
6D23, ALTN FLAP PWR

 S 215-078
 (31)
 Put the position selector switch in the UP-unit detent, and do the check that follows:

 (a)  
Make sure the TE flaps and LE slats do not move.

 (b)  
Make sure the TRAILING EDGE light is on and the EICAS message TE FLAP DISAGREE shows on the display.

 S 865-166
 (32)
 Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel:

 (a)  
6D23, ALTN FLAP PWR

 S 215-079
 (33)
 Quickly move the position selector switch to the 1-unit detent and back to the UP-unit detent and make sure that the TE flaps and LE slats move to the UP position.

 S 865-080

 (34)
 Put the position selector switch for the alternate flaps/slats in the NORM position.

 S 865-081

 (35)
 Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags:

 (a)  
11H23, FLAP/SLAT ALTN DR SHUTOFF ARM

 (b)  
11H24, FLAP/SLAT ALTN DR SHUTOFF 2

 S 215-082
 (36) Move the flap control lever to the 5-unit detent, and make sure the TE flaps and LE slats do not move.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 07 Page 543 ú Jun 20/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 S 215-083
 (37)
 Make sure the EICAS message, FLAP ISLN VAL, comes on the ECS/MSG and status display after 3 seconds.

 S 215-084

 (38)
 Move manual override lever on the bypass valve of the TE flap PDU to the usual position (POS 2), and make sure steps that follow occur:

 (a)  
Make sure the TE flaps move to the 5-unit position.

 (b)  
Make sure the TRAILING EDGE light and EICAS message TE FLAP DISAGREE on the EICAS display unit are on momentarily and then go off.

 WARNING:_______ KEEP PERSONS AND EQUIPMENT AWAY FROM THE TE FLAPS.  IN THE STEP
 THAT FOLLOWS, THE TE FLAPS WILL MOVE AND MAY CAUSE INJURY TO
 PERSONS OR DAMAGE TO EQUIPMENT.

 S 865-085
 (39)
 Remove the DO-NOT-CLOSE tags, and close these circuit breakers on the P11 panel:

 (a)  
11H23, FLAP/SLAT ALTN DR SHUTOFF ARM

 (b)  
11H24, FLAP/SLAT ALTN DR SHUTOFF 2

 S 215-086
 WARNING:_______KEEP PERSONS AND EQUIPMENT AWAY FROM THE LE SLATS. IN THE STEP THAT FOLLOWS, THE SLATS WILL MOVE AND MAY CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (40)
 Push the arming switches for the alternate drive of the TE flap and LE slat to disarm the flap and slat alternate drives (switch lights will go off), and make sure the LE slats move to the intermediate position.

 S 865-087

 (41)
 Move the flap control lever to the zero (FLAPS UP) detent, and let the TE flaps and LE slats fully retract.

 S 035-088

 (42)
 Erase the EICAS message FLAP ISLN VAL from the ECS/MSG display.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-00
 ALL  ú ú 06 Page 544 ú Dec 20/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
 S 215-089
 (43)
 Make sure the EICAS messages, FLAP/SLAT ELEC and FLAP ISLN VAL, are not shown on the status display.
　
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