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Maintenance 3-3
Disassembly Procedures
Introduction
This section provides detailed disassembly and reassembly procedures for those assemblies
which are field replaceable.
Adjustments and/ or checks must be performed following the replacement of certain items
in the unit. A list of required procedures is furnished as the last step in each disassembly
procedure.
The disassembly procedures are presented in a manner such that assemblies which block
access to other assemblies are listed first.
Cover Panels
Front cover is removed by pulling outward on lower outside corners of disc insertion open-
ings.
Remove the top cover by placing the unit on a broad, flat object (such as a book), so that the
feet are off the surface. Remove the four recessed screws (two per side) on the exposed
front panel, and the two screws in the lower corners of the back of the unit. Then slide the
cover back and off of the unit.
Bottom cover is attached by five screws which are exposed when the top cover is removed.
Controller Module
1.
Remove power from unit.
2. Remove front cover panel.
3. Remove the connector retaining bracket on lower right side of unit.
4. Remove connector on right side of controller module.
5. Rotate the two board extractors and then remove the controller board.
CAUTION
TO PREVENT POSSIBLE DAMAGE TO THE CONTROLLER
BOARD DURING REMOVAL OR REINSTALLATlON, CARE
MUST BE TAKEN TO INSURE THAT THE BOARD REMAINS IN
ITS GUIDE TRACKS.
If the controller board is loose in the guides, perform the following steps to adjust the
controller board guide:
1. Remove the drive assemblies.
2. Set the 9895A on its side or rear surface.
3. Make sure that the controller board is completely seated in the connectors.
4. Loosen the guide screws and press on the guide so that it fits firmly against the side of
the controller board.
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