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A: 1. When the after-sales personnel are maintaining the HT33040XL and DT3340XL machines, if they find that the board on the machine is defective, the board code is 17001-02182, the inverter busbar safety board. They should pay more attention to these positions: whether the U5 optocoupler, R11, R12, R7, R30, D27, D28, etc. are corroded, because this board is in the air outlet, it is easy to corrode. See the picture.
2. If corrosion is found, please note in the shipping list that these positions should be covered with white glue for protection. White glue code: 39002-00030
Fixative adhesive: hot melt adhesive strip: softening point: about 105℃ + 5℃: viscosity: 180℃ / 16000CPS: milk white: 8811A: ROHS: R.
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