WARNING THE COMPUTER MUST BE EARTHED IMPORTANT The wires in the mains lead for the apparatus are coloured in accordance with the following code: Green & Yellow Earth Blue Neutral Brown Live The moulded plug must be used with the fuse and fuse carrier firmly in place. The fuse carrier is of the same basic colour (though not necessarily the same shade of that colour) as the coloured insert in the base of the plug. Different manufacturers' plugs and fuse carriers are not interchangeable. In the event of loss of the fuse carrier, the moulded plug MUST NOT be used.
Either replace the moulded plug with another conventional plug wired as detailed below, or obtain a replacement fuse carrier from an authorised ACORN dealer. In the event of the fuse blowing it should be replaced, after clearing any faults, with a 5 amp fuse that is ASTA approved to BS1362. If the socket outlet available is not suitable for the plug supplied, the plug should be cut off and the appropriate plug fitted and wired as previously noted. The moulded plug which was cut off must be disposed of as it would be a potential shock hazard if it were to be plugged in with the cut off end of the mains cord exposed.
As the colours of the wires may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured green and yellow must be connected to the terminal in the plug which is marked by the letter E, or by the safety earth symbol ,or coloured either green or green and yellow. The wire which is coloured blue must be connected to the terminal which is marked with the letter N, or coloured black. The wire which is coloured brown must be connected to the terminal which is marked with the letter L, or coloured red.
Protecting the Winchester Disc Winchester disc drives are fragile to avoid damage or data loss, do not move or knock the Acorn Cambridge Workstation (ACW) while it is running. The ACW must always be moved gently, and not tilted rapidly, or turned on its side. After using the ACW, the heads should be moved to the parking zone BEFORE switching off the mains power. The exact command that needs to be used to park the heads will depend on which program is in control. For instance: (1) From PANOS (-> or user defined prompt: -> Logoff ADFS: (RTN) -> .Quit (RTN) Turn off Power. (2) From PANDORA (* prompt) *ADFS (RTN) *BYE (RTN) ACW SERVICE MANUAL 3