SYSTEM OVERVIEWflexible disk drives and 256 KB memoryo A 12-inch color display with Videotex, 1 flexibledisk drive and 1 fixed disk drive, and 256KBmemoryThe Videotex systems are dual purpose systems, to beused either as a Videotex system, or as a normalpersonal computer. These systems are tailored to meeti n d i v i d u a l country r e q u i r e m e n t s , for e x a m p l eBildschirmtext for Germany, Teletel for France, andPrestel for Great Britain.WARNINGDisconnect the power cable before removingthe cabinet. Dangerous voltages are presentwhen working on the computer with the cabinet removed.ONLY TRAINED ENGINEERS AND NCR TRAINED SERVICE PERSONNEL SHOULD ATTEMPT TO WORK ON THECOMPUTER WITH THE CABINET REMOVED AND THEPOWER ON.It is recommended that the first operationafter removing the cabinet should be to discharge CRT anode voltage.CAUTIONElectrostatic discharge can cause damage tosome components used in the computer. Wherepossible, work in a static free area and usespecial wrist-ground straps. Avoid touchingthe components and circuit paths, handleprinted circuit boards by their edges. Theconstruction technique (multi-layer) used onsome PC boards makes the soldering components extremely difficult, therefore suchwork should only be undertaken by a fieldengineer who is experienced in repairing1-4
