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Amiga ATX power adaptor install guide - Manual, serwisówki |
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[ Pobierz całość w formacie PDF ] Amiga ATX power adaptor install guide Amiga ATX power adaptor install guide Introduction The ATX power adaptor allows you to power your Amiga A500/A600/A1200 or CD32 from a modern ATX power supply. Whilst primarily intended for use in tower systems, you can use it without a tower case. It does require an existing Amiga PSU lead, perhaps from the PSU that you are replacing. It should take approximately 10 minutes to install and test this adaptor. Required tools A pair of wire cutters, A pair of needle nose pliers, A small flat blade screwdriver, with a 3mm wide tip, A multi-meter (optional), A small knife for insulation removal. Preparation First you will need to remove the power lead from your existing PSU, if you have not done so already. Please ensure that the original Amiga PSU is unplugged prior to removing the power lead. Do not open either the original PSU or the new ATX power supply as lethal voltages can still be present for a considerable time after the last use. From the end of the Amiga power supply lead farthest from the plug, carefully remove the outer grey insulation approximately 50mm (2”) from the end of the cable. Remove the foil shield from the cable. You should have something that looks like this: Figure 1 Prepared power lead Version 1.0 Page 1 of 6 23 rd August 2008 Amiga ATX power adaptor install guide The next step is to remove about 10 mm (3/8”) of insulation from each of the wires, then twist them with the needle nose pliers. Due to the number of different cable types used it is not possible to conclusively state which colour wire is for which supply voltage. If you have a multi-meter or circuit tester, check the connectivity of the cable, using this picture as a guide to the power connections: Figure 3 Amiga power plug pinout Version 1.0 Page 2 of 6 23 rd August 2008 Figure 2 preparing the wire ends Amiga ATX power adaptor install guide Record your connection details in the table here: Supply Possible wire colour Actual wire colour +12V Brown -12V White +5V Red GND/0V Black Shield Yellow Table 1 Power lead pinout Wiring connections for a CD32 For the CD32, you can make a new power lead with a few components from an electronic parts supplier. You need: 1 x 4 pin DIN plug 3 lengths of 18 AWG wire A simple and cheap solution for the 18AWG wire is to take it from a PC CD/HDD ‘Y’ adaptor cable. Connect the wires up as shown here: Wire colour Voltage Red +5V Yellow +12V Black GND/0V Table 2 CD32 power lead connections Figure 4 CD32 PSU pinout Version 1.0 Page 3 of 6 23 rd August 2008 Amiga ATX power adaptor install guide Connections to the adaptor board Now that you have prepared the cable for your A500/A600/A1200 or CD32 you are ready to connect it to the adaptor board. The connection is accomplished using the screw terminals on the PCB, shown in detail here: Figure 5 Adaptor board with close up of connection detail Note, you may need to unscrew the terminals prior to inserting the wire. Connect each of the coloured wires, referring to table 1 or 2 as appropriate, to the correct terminal. Tighten the screw to secure the wire. It is acceptable to connect the shield wire of the existing Amiga power lead to the 0V/Ground connection. Version 1.0 Page 4 of 6 23 rd August 2008 Amiga ATX power adaptor install guide It should now look like this Figure 6 Wired up unit Testing Prior to connecting the power lead to your Amiga, you can test the adaptor with just the ATX PSU. Plug the adaptor board into the ATX PSU. Figure 7 Unit connected to the ATX power supply If you now connect the ATX power supply to the mains, you can proceed to test the unit. By momentarily depressing the blue button, the power supply should turn on, indicated in most instances, by the fan activating. Version 1.0 Page 5 of 6 23 rd August 2008
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