Warning E03: no 24V input of main control board
a) This failure means “no 24 V input of main control board”. Take apart the instrument back shell and test J5.1 and J5.2 with the DC voltage gear of multimeter. If it is 24V±2V, the power supply should be normal. You are suggested to replace main console control board. In such case, the failure is non-crucial and can be shielded through “password 3”.
b) If the test voltage is 0V, plug off the J6 and retest voltage of J5.1 and J5.2. If the voltage is recovered to the normal value, judge it is the failure connection of handpiece TEC to the corresponding wiring harness or the failure of TEC. The failure point could be determined further by replacing the handpiece.
c) If the voltage is still zero, continue to plug off J5 and test voltage of J5.1 and J5.2. If the voltage is recovered to the normal value, judge it is the failure of the main control board of main console. Otherwise, it should be the short circuit of other 24 V part used of main console (cooling fan power supply or power supply of water quality monitoring board) or failure of switch power supply. Please investigate one by one.
Related Articles
Warning E02：failure of 24 V cutoff of main control board
a)This failure means the “failure of 24 V cutoff of main control board”. After occurrence of this failure, you are suggested to replace the main control board. This failure is non-critical and can be shielded through “password 78652818”warning E19: communication between display system and main control board is abnormal
a) This failure means the “communication abnormality between display system and main control board”. Use it again after restarting the instrument. If this failure occurs again, find out the problem. If no problem is discovered, it will be caused by ...warning E14: communication between energy meter and main control board is abnormal
a) This failure means the “abnormality of the communication with energy meter”. Confirm the designated model of energy meter is used in calibration and that the energy meter interface is correctly connected with main control board of main console.Warning E10: communication beween water-quality Inspection Board and mainboard of main console is abnormal
a) This failure means the “communication abnormality of water quality testing board”. b) This failure will be alarmed after startup and is unable to be eliminated. Take apart the instrument back shell and then check the states of “main control board ...Warning E06 E07: The cooling power supply for the handpiece can't be turned off ; no power input for handpiece cooling
This failure means the “failure of handpiece refrigeration control” or “no power input of handpiece refrigeration”. Replace mainboard of main console at this time.