TEC in handpiece can't refrigerate

TEC in handpiece can't refrigerate

a) First, confirm whether there is a problem in temperature test. The temperature of 4-7℃ is not displayed in interface.

b) Under the ready state, test the voltage at two ends of main control board J6 of main console. It should be ≥5V and the indicator lamp D45 should be on.  Otherwise, it should be the failure of main control board of main console. Replace the main control board of main console at this time.

c) The refrigeration failure may also be resulted from broken line. Use a multimeter to test the line from J6 to main console end handpiece and confirm whether it is caused by broken line.

d) Use a multimeter to test whether there is a broken line from handpiece plug to the TEC.

e) If no problem is discovered after the above steps, the problem may be ascribed to the failure of TEC. Replace the TEC (you are suggested to replace the two TEC in such case).

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