CEREC AC Diagnostic Tool Kit Procedure

The CEREC AC Diagnostic Tool Kit contains an ATX Power supply tester, Power cable extension for the PC power supply and a Power button cable for switching on the PC. This document details how to use these items to diagnose a PC that will not boot up. You would perform this procedure only after verifying that 230VAC(bluecam) & 115VAC(Omnicam) is present at the power plug for the PC power supply.

□ Connect the Power button cable into the PC. The green

lamp in the button should come on which indicates that the 5V standby voltage is present. Press the button and see if the PC boots up. If it DOES then the fault is between the cable and the keyboard. If it does NOT then continue to next step.

□ Remove the PC and its cover.

□ Connect the cables of the PC power supply to the ATX power supply tester.

□ Connect the Power Extension Cable into the power

cable of the CEREC AC and into the PC. This will supply the necessary 230VAC(bluecam) or 115VAC(Omnicam) to the PC.

□ Switch the CEREC AC ON at the main switch.

□ The PC power supply tester should then turn on.

□ If it does NOT then ensure you have 230VAC(bluecam) or 115VAC(Omnicam) to the PC and re-

place the PC power supply.

□ If it does turn on you should have readings

similar to shown. It is normal for the unit to beep and +12V2 to show “LL”. This is a good power supply. If any reading other then +12V2 shows “LL” or “HH” then the power supply is defective. Note: the LED’s at +12V, +3.3V and +5V will NOT be on.

□ If readings are good then PC is defective.

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