Specifications

3000
Fitting an internal expansion card
This procedure covers the fitting of an internal
expansion card, such as the User Port / MIDI
expansion card. This work should only be carried by -
Acorn Dealers or Approved Service Centres:
1 Follow the procedure for removing the cover of the
computer given in the next chapter.
2 Unscrew the two machine screws holding the rear
blanking plate in place:
3 Plug the expansion card into the two connectors on
the PCB:
4 Replace the two screws holding the expansion card
backplate.
5 Replace the cover of the computer.
6 Run the dealer test software to test the correct
function of the computer and the upgrade, and of
any other upgrades fitted.
Keep the rear panel blanking plate with the computer, in
case the expansion card is removed later.
1Mb RAM upgrade
-The A3000 computer RAM can be upgraded from 1 Mb
to 2 Mb by the addition of a 1Mb RAM module which
plugs into the main PCB.
Fitting a RAM upgrade
1 Follow the procedures detailed in the next chapter
for the removal of the computer cover and the
keyboard.
2 To fit earlier RAM upgrades with securing lugs,
remove two PCB retaining screws and plug the
upgrade module, in a vertical position, into the
board. Later upgrades, with no fitting lugs, simply
push into the connectors on the PCB:
3 Replace the screws securing the PCB and the
upgrade module.
4 Replace the keyboard and the cover of the
computer.
5 Run the dealer test software to test the correct
function of the computer and the upgrade, and of
any other upgrades fitted.
A3000 expansion