(a)  
11H11 or 11C5, STAB TRIM CONT LEFT

 NOTE: This circuit breaker has two possible grid locations.
____
 (b)  
11H20, STAB TRIM CONT RIGHT

 (c)  
11J12, ELEVATOR LIMIT

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 S 862-044
 (3)  
For the rudder ratio changer module, also open this circuit breaker on the overhead circuit breaker panel, P11, and attach a DO-NOT-CLOSE tag:

 (a)  
11G10 or 11D18, RUD RATIO

 NOTE: This circuit breaker has two possible grid locations.
____
 TASK 27-09-00-402-007
 3. Install the Module
__________________
 A. References
 (1)  
20-10-01/401, E/E Rack-Mounted Components

 (2)  
20-41-01/201, Electro-Static Sensitive Devices

 (3)  
27-61-00/201, Spoiler/Speedbrake Control System

 B.
Access

 (1)  
Location Zones
 119 Main Equipment Center

 (2)  
Access Panels
 119BL Main Equipment Center Access

 C.
Install the Module

 S 982-074
 (1)  
For an all -100 series SCM configuration, the most effective maintenance occurs when there are -117 and -118 SCMs installed at shelf positions 1R and 2R. This is because there are two types of the older -100 series SCMs: the -112/-114 SCMs, and the -117/-118 SCMs. The -117 and -118 SCMs have an improved ground speedbrake delay circuit which reduces the risk of a nuisance fault if a transient signal occurs in the air/ground system.

 S 982-075

 (2)  
For an airplane that has the -100 and -200 series SCMs installed, the most effective maintenance usually occurs when you have at least one -200 series SCM installed on each shelf. The best location for the two -200 series SCMs are at the 1R and 3L shelf positions, preferably with a -117 or -118 SCM installed at shelf position 2R. If only one -200 series SCM is available, install it at 1R.

 (a)  
If an intermittent problem occurs at a given shelf location, or when it is necessary to replace an SCM during the fault isolation procedure, a -200 series SCM is recommended for installation there.

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 (b)  The -200 series SCMs have an expanded capacity for detection and isolation of faults. When a -200 series SCM is available, it will provide the fastest and best fault isolation for spoiler system troubleshooting.
 S 042-016
 WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
_______ HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
 (3)  Do the deactivation procedure for the spoilers (Ref 27-61-00) or move all persons and equipment away from the spoilers.
 S 912-008
 CAUTION: DO NOT TOUCH THE MODULE BEFORE YOU DO THE PROCEDURE FOR DEVICES
_______ THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE MODULE.
 (4)  
Do the procedure for devices that are sensitive to electrostatic discharge (Ref 20-41-01).

 (5)  
Install the module (Ref 20-10-10).

 S 862-010

 (6)  
For all modules, remove the DO-NOT-CLOSE tags and close these circuit breakers on the overhead circuit breaker panel, P11:

 S 422-009
 (a)  11C6,  CSEU 1L AC  or  FLT CONT ELEC 1L AC
 (b)  11C7,  CSEU 1L DC  or  FLT CONT ELEC 1L DC
 (c)  11C8,  CSEU 2L AC  or  FLT CONT ELEC 2L AC

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