North Star DIMENSION Service Manual page 186

SUBASSEMBLY REMOVAL
Installing a New Central Board
Procedure: Installing a New Central Board
6. While continuing to press the board against the central module rear
panel, insert two screws through the rear panel into connectors that
are already attached the circuit board.
7. Attach the diskette and fixed disk drive signal and control cables to
the front edge connectors of the central board.
Note: The diskette cable connector is located nearest the drive mount
brackets. The signal and control cable red leads are located nearest
the power supply assembly.
8. Be sure that the workstation board support rail is snapped into place
on the base.
Note: The DIMENSION central module uses multilayer central boards
(designated C5 TL on the board) and double-layer central boards
(designated Central/2 PCB). You may mount a 256K expansion RAM
PCB on a multilayer central board; however, you may not mount this
expansion RAM PCB on a double-layer central board even though both
central boards have identical connectors.
If you're substituting a double-layer board for a multilayer board with
256K RAM expansion , do not mount the expansion RAM PCB on the
new board.
This concludes the procedure for installing a new central board.
4-20 DIMENSION Service Manual