Appendix C

Changing PC3 Voltage

In most cases, you will not need to change the voltage on your PC3. However, since different countries use different standard voltage settings, there may be times when you need to make the change.

The PC3’s fuse holder (where the power cable plugs in) is where you change the voltage. The marks on the fuse holder are 115 and 230. 115 should be used for voltages from 100 to 125. 230 should be used for 200 to 240. Generally, North America uses 115, and Europe and Asia/

Australia use 230, but there are exceptions to this general rule.

The PC3 uses two 250 mA fast blow fuses for 230V or two 500 mA fast blow fuses for 115V.

These can be either 1.25" X 0.25" size or 5 mm X 20 mm size fuses. Extra fuses are not provided, so you will need to acquire the correct fuse before you change the voltage.

Removing the fuse holder

Remove the power cord.

Pry open the fuse holder cover. Use a thin tool inserted into the hole where the red voltage indicator shows through.

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Pull up gently to open the fuse holder cover. The cover is hinged next to the power cord connection.

Pry out the fuse holder.

If there is only one fuse in the fuse holder, you must remove the metal clip on the empty side.

The clip just pulls off:

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The clip removed from the fuse holder:

Remove the fuse. Install two 250 mA fast blow fuses for 230V or two 500 mA fast blow fuses for

115V, one on each side of the fuse holder.

The fuse holder will accept either 1.25" X 0.25" size or 5 mm X 20 mm size fuses. If using 5 mm X

20 mm size fuses, install them towards the inside end of the fuse holder near the metal pins, as shown here:

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Replace the fuse holder in the power entry module with the indicator for the desired voltage towards the edge of the module, away from the power switch. Close the fuse holder cover, and check that the desired voltage indication shows through the hole. Replace the power cord.