BBC Acorn A3000

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A grubby looking BBC Acorn A3000 ready for restoration to its former glory.

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Firstly at the rear, slacken the 2 screws and slide out the locking plates (downwards).

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Undo (1) screw in the centre of the base.

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Press tabs at rear of lid "inwards" then raise rear. You will also have to ease
the front of the case free by pressing tabs in the 3 slots on the underside.

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Grip carefully at both ends and remove each of the 2 Keyboard Ribbons by pulling upwards.
The keyboard will the lift off.

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Unplug all connectors to the mainboard (noting there positions for re-assembly).
Also unplug the 2 stereo speakers and remove them.

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Remove the floppy drive unit by unscrewing the 4 screws found on the underside of the case.

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By pressing in the middle of the Power Supply Label you will feel a square hole.
Make 3 cuts to reveal access to a deeply recessed screw. Undo to remove the PSU lid.

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Remove 3 screws securing mainboard (centre,centre left and bottom left).
The lift the PSU and mainboard away. (after unplugging mains cable and earth strap)

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Clean the Mainboard using a small paintbrush and a vacuum cleaner.
The difference is noticable in the photograph. Just like new underneath.

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Clean all other components using Vacuum or damp cloth method.
Keyboard cleaning is described in full in the Acorn A3010 section.

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Re-assemble is the reverse of the steps above.
Lovely and clean. Ready to accept keyboard.

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Keyboard fitted. To fit the Keyboard ribbons, hold each end of the ribbon and press firmly
into connectors. Its a tight squeeze but unless you've got giant hands you should do it ok.

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Main case back on and powered up. Job well done.


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