(a) 11G15, STAB POS MOD LEFT
 S 285-087
 (17)
 Make sure the MACH/SPD TRIM light (yellow) comes on.

 S 285-088

 (18)
 Make sure MACH/SPD TRIM shows on the top EICAS display unit.

 S 985-089

 (19)
 Set the computer selector switch on EICAS display select panel to the L position.

 S 285-090

 (20)
 Make sure the MACH/SPD TRIM light (yellow) stays on.

 S 285-091

 (21)
 Make sure MACH/SPD TRIM shows on the top EICAS display unit.

 S 865-092

 (22)
 Open these circuit breakers on the P11 panel:

 (a) 11C8, CSEU 2L AC or FLT CONT ELEC 2L AC
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757 MAINTENANCE MANUAL
 (b)  
11C6, CSEU 1L AC or FLT CONT ELEC 1L AC

 (c)  
11C8, CSEU 2L AC or FLT CONT ELEC 2L AC

 (d)  
11G15, STAB POS MOD LEFT

 (e)  
11G17, CSEU 1R AC or FLT CONT ELEC 1R AC

 (f)  
11G27, CSEU 2R AC or FLT CONT ELEC 2R AC

 S 285-094
 (23)
 Make sure the MACH/SPD TRIM light (yellow) goes off.

 S 285-095

 (24)
 Make sure MACH/SPD TRIM does not show on the top EICAS display unit.

 G. The Test of the Mach/Speed Fault Crossfeed Interface
 S 865-096
 (1)  Open this circuit breaker on the P11 panel:
 (a)  11G24, STAB POS MOD RIGHT
 S 285-097
 (2)  
Make sure the MACH/SPD TRIM light (yellow) stays off.

 S 725-143

 (3)  
Make sure MACH/SPD TRIM does not show on the top EICAS display unit.

 NOTE: STAB TRIM shows on the top EICAS display unit while
____
 circuit breaker is open.

 S 865-099
 (4)  Close this circuit breaker on the P11 panel:
 (a)  11G24, STAB POS MOD RIGHT
 S 865-100
 (5)  
Open this circuit breaker on the P11 panel:

 (a)  11G15, STAB POS MOD LEFT

 (6)  
Make sure the MACH/SPD TRIM light (yellow) stays off.

 S 285-101
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757 MAINTENANCE MANUAL
 S 725-144
 (7)  Make sure MACH/SPD TRIM does not show on the top EICAS display unit.
 NOTE: STAB TRIM shows on the top EICAS display unit while
____
 circuit breaker is open.

 S 865-103
 (8)  Close this circuit breaker on the P11 panel:
 (a)  11G15, STAB POS MOD LEFT
 H. The Test of the Standby Trim Switch Interface
 S 985-132
 (1)  
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND;
 Move the STAB TRIM levers forward.

 S 985-133

 (2)  
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Move the ALTERNATE STAB TRIM switches forward.

 S 285-105

 (3)  
Make sure the UNSCHED STAB TRIM light (yellow) stays off.

 S 985-135

 (4)  
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND;
 Set the STAB TRIM lever to neutral.

 S 985-136

 (5)  
AIRPLANES WITH ALTERNATE STAB TRIM SWITCHES ON THE CONTROL STAND; Release the ALTERNATE STAB TRIM SWITCHES.

 I. The Test of the Flap Position Interface
 S 865-107
 (1)  Open these circuit breakers on the P11 panel in less than one second of each other and attach DO-NOT-CLOSE tags:
 (a)  
11C14, FSEU 2 PWR or FLAP SLAT ELEC UNIT 2 POWER

 (b)  
11G12, FSEU-1 PWR or FLAP SLAT ELEC UNIT 1 POWER

 (c)  
11G21, FSEU-3 PWR or FLAP SLAT ELEC UNIT 3 POWER

 S 285-108
 (2)  
　
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