THE EMC 10 DISPLAY IS BLANK FAN IS FUNCTIONAL

Osman Bayrak

THE EMC 10 DISPLAY IS BLANK, THE FAN IS FUNCTIONAL:

  1. With power still on the machine, lift the display and check the ribbon cable to the Keyboard PCB for proper connection, try adjusting the Intensity Adjustment Potentiometer which is located at the right side of the Keyboard PCB.
  2. This adjustment can also be use to make the LCD DISPLAY more visible by increasing the intensity. Refer to the Technical Manual.
  3. Next check the 5 Volt supply on the 4 Axis PCB that is located on the left side of the EMC 10. Removing the cover, will expose the 4 Axis PCB.
  4. NOTE: Do not cross the test leads. Disconnect the computer interface Cable.
  5. Power the machine off, disconnect the power cord from the wall, and reseat the Power Harness connector at the base of the Power Supply under the machine's Keyboard.
  6. With the machine powered off still, blow the dust out of the Power Supply using Canned Air or an air compressor.
  7. Set the Digital Voltmeter to the lowest setting, preferably the 20 volts range.
  8. Put the leads in Test Point, TP 4 (GND) and TP 3 (+5v). These test points are located on the 4 Axis Driver PCB. Refer to the Technical Manual (Power Supply- 5volt setting).
  9. The voltage at this point should be 5.03v to 5.05v. If the voltage is lower then 5.0v then adjust the voltage at the 5V ADJ. Potentiometer which is located next to the Power Supply connector block and red LED. Refer to the Technical Manual Contents -"Power Supply (5 Volt Setting)". Note: If there is dust in the Power Supply; use an air compressor or canned air to blow dust out with the power supply powered OFF. Try reseating the long power harness connector at the base of the power supply after removing Keyboard Cover. Test the 5 volt setting once again.
  10. If turning the ADJ. Potentiometer and it still does not change the voltage, and the Power Supply fan is not functioning then call your distributor for a Power Supply replacement. P/N 005570-01 Refer to the Technical Manual for replacement instructions.