(4)  
The Rudder Ratio Changer Modules M528, M529

 B.  
The removal, installation and installation test tasks for the yaw damper modules M522, M523 are in 22-21-04/401.

 C.  
The modules are on shelf 1 of equipment racks E3 and E4 in the main equipment center. The modules are all rack-mounted components.

 D.  
All of these modules have static sensitive components. You must use the specified maintenance manual procedures when you touch the modules.

 TASK 27-09-00-002-001
 2.  Remove 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.  
Prepare for the Removal

 S 912-002
 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.
 (1)  Do the procedure for devices that are sensitive to electrostatic discharge (Ref 20-41-01).
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12.
 STABILIZER TRIM/ELEV ASYM LIMIT MODULE L (M524)

13.
 SPOILER CONTROL MODULE NO. 2 L (M531)

14.
 RUDDER RATIO CHANGER MODULE L (M528)

15.
 SPOILER CONTROL MODULE NO. 1 L (M530)

16.
 CSEU POWER SUPPLY MODULE NO. 1 L (M536)

(REF) MAIN ELECTRONICS EQUIPMENT CENTER

CSEU Module Installation
Figure 201

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Spoiler Control Module (-200 Series) With BITE Display
Figure 202

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 S 042-003
 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.
 (2)  
Do the deactivation procedure for the spoilers (Ref 27-61-00) or move all persons and equipment away from the spoilers.

 D.
Remove the Module

 S 862-004
 (1)  
For all modules, open these circuit breakers on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags:

 (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

 (d)  
11C9, CSEU 2L DC or FLT CONT ELEC 2L DC

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

 (f)  
11G18, CSEU 1R DC or FLT CONT ELEC 1R DC

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

 (h)  
11G28, CSEU 2R DC or FLT CONT ELEC 2R DC

 S 862-005
 (2)  
For the stabilizer trim/elevator asymmetry limit module, also open these circuit breakers on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags:
　
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