Warning W04: treatment room door is opened

a) This failure may be resulted from the improper operation. First, judge whether the failure is ascribed to “treatment room door is opened”.

        1. Short circuit main console gate interlock plug sockets 1 and 2 and main console gate interlock plug sockets 3 and 4. If the alarm is eliminated at this time, judge it is the failure of gate interlock plug. Then, make inspection as per the Step 2 and 3; otherwise, follow Step b).

       2. If you fail to modify the socket plug, confirm whether the accompanying gate interlock plug is used. The treatment room door is closed by default.

       3. If you have modified the gate interlock plug, which is relevant to the treatment room door, please confirm the correct terminal of gate interlock plug is used and connected with treatment room correctly (this switch should be open-circuited when the treatment room door is opened). In such case, this prompt will be triggered if “treatment room door is opened”.

       b) Where the alarm is not eliminated, take apart the instrument back cover and then short circuit P6.2 and P6.3 with tweezers. If the alarm is still not eliminated, judge it is the failure of main control  board of main console, and try to replace the main control board of main console.

       c) If the problem still exists after the above steps, it should be the failure of instrument line. Check the state of “main control board of main console D37” (this indicator lamp is in the “on” when “treatment room door is closed”). If the state of indicator lamp does not comply with the reality, confirm whether the corresponding wiring harness is loose and whether any line is broken according to the “wiring diagram”. (Where P6.2 and P6.3 are short circuited when “treatment room door is closed”, use a multimeter to help test line connection/disconnection.)

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