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Amstrad PCW 9256 Capacitor Replacement Guide
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== Safety == '''Warning: the main unit runs from the mains and contains a CRT. C505, 150 Β΅F 400 V, holds a dangerous charge after the plug is pulled.''' * Unplug the machine and discharge the tube; see [[CRT Discharge Procedure]]. * Measure across C505 and discharge it through a suitable resistor before touching the board. Amstrad's board drawing outlines the area at mains potential and marks it "danger mains voltage"; the mains fuse F501 (3.15 A time-lag) and the rectifier diodes D501βD504 are inside it.<ref name="sm9256" /> * After the work, run Amstrad's safety tests: a 4 kV flash test and an insulation resistance of at least 4 MΞ©, both between the joined mains live and neutral and all accessible metal on the outside.<ref name="sm9256" />
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