Chapter 4 - Subassembly Removal; Workstation Board; 8087 Board; Omninet Board - North Star DIMENSION Service Manual

CHAPTER 4
SUBASSEMBLY REMOVAL
Introduction This chapter contains procedures for removing and
reinstalling major DIMENSION subassemblies. The
procedures include instructions for removing:
• Workstation board
* 8087 board
* OMNINET board
* Tape drive interface board
* Workstation 128K/384K expansion RAM board
* Power supply
* Central board expansion RAM
* Bus board
* Central board
^c Diskette drive
r Fixed disk drive
Tape drive
Procedures are also included for reinstalling a central board
and a bus board.
References The subassembly removal procedures in this chapter are not
illustrated. All procedures, except for the final ones
regarding reinstallation of the central and bus boards, are
reversals of the hardware installation procedures found in
Chapter #1.
If you have any difficulty comprehending the steps in this
chapter, refer to the illustrations in Chapter #1.
,i-.. Tools The only non-standard tool required for subassembly removal
is a 5/32" hex ball-driver. This tool is used for loosening
two hex screws that fasten the power supply subassembly to
the base panel of the central module.
DIMENSION Service Manual 4-1