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Acorn Archimedes A3010 Maintenance Guide
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== โ ๏ธ Safety: on-board mains PSU == The A3010's mains power supply is built onto the main PCB, so '''the board carries mains voltages. Disconnect the mains lead before opening the case,''' and treat the power end of the board as a live hazard until it is proven discharged.<ref name="sm">[[Acorn A3010, A3020 and A4000 Service Manual]], Acorn Computers Ltd โ hosted on this wiki. PSU-fail and main-PCB-fail routines, the 5 A mains fuse and internal fuse FS1, thermal shutdown, the +5 V/+12 V rails, drive-power links LK1/LK2, and the earth-continuity / DC-insulation safety tests.</ref> Re-apply the earth-continuity and DC-insulation (class 1) safety tests after any internal work.<ref name="sm" />
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