If you have no or low power input at these two terminals, replace the fuse.ī. You should be getting 110V or 220V AC ☑0% depending on the wallpower supply. If the green LED is not illuminated, measure the A/C input voltage at the location shown in Figure 1 above. The green LED located on the top right side of the back of the power supply unit should immediately illuminate.Ī. Connect an AC power cord into the power entry module on the power switch bracket located on the back of the power supply assembly.ġ4. If the terminals are missing, either order replacement jumpers, or you can fabricate replacement jumpers with 16 gauge AWG wire and ring connectors available from any electrical supply store. Check and make sure that the jumpers are installed as shown in the picture above. Set the power supply on a table or work bench with an A/C outlet close by.įigure 2 - Power Supply Unit Terminal Jumpersġ1. Remove the power supply assembly from the machine following the procedures for removing the power supply in the section titled " Power Supply Assembly".ġ0. Disconnect the external Ethernet cable.ĩ. Disconnect the A/C wallpower supply harness from the main power input connector. Otherwise, reinstall the covers and tighten the screws to Melco Torque Specifications.Ĩ. Replace the harness and if it does not solve the problem, proceed with testing the power supply unit. If the power output is stable and measures between 34.5V to 38V DC, then the 36V power harness is probably bad. If the voltage changes, measure 36V DC output at the power supply terminal block. (wires disconnected for illustration only)Ħ. If the voltage input measured from any of the red wires in the 36V power harness is not between 34.5V to 38V DC, wriggle the cable and look for voltage change.įigure 1 - Power Supply Voltage Measurement Points
Turn the machine ON and check the voltage which should be between 34.5V to 38V DC.ĥ. Place the ground lead from the voltage meter on the pin to any of the black wires and the positive (hot) lead from the voltage meters on any one of the red wires. Use a voltage meter set to measure DC voltage and measure the voltage output on the 36V power harness.
If any of the LEDs are not correct (on or blinking as appropriate) as described in steps 1 and 2 above, turn the machine OFF, remove the lower arm rear cover, disconnect the 36V power harness from the main PCB.Ĥ. Check the status of LEDs at locations D52, D53, and D45. Both of them should always be illuminated when the machine is turned on.Ģ. Check the 5V LED at location D43 and the 15VLED at location D32 on the main PCB. To test power supplies that are already installed in the machine, use the following procedures:ġ.
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