Fault**: The error "190 192" is reported, which is usually caused by keyboard failure or user error. Fault analysis and troubleshooting: This fault is often encountered in maintenance work, and the specific reasons for this fault may be: The operator has accidentally pressed the hand or foot control switch before turning on the power switch; In the process of self-test, the operator presses a certain function key on the front panel; The thin mold function button on the panel is stuck and cannot be bounced. Generally, 190 is a bipolar partial fault, 191 is a unipolar electric resection partial fault, and 192 is a unipolar electrocoagulation partial fault. At this time, the electric knife should be turned off first, all accessories should be unplugged and no function keys should be pressed, and the error can be eliminated after restarting the instrument.
Equipment model: Kangmei Electric Knife 60-8005-002
Visual inspection: check that the appearance of the host is complete and there is no obvious sign of external damage.
2.Symptom: The host is powered on, and an occasional error is reported, err 118.
3.Disassembly diagnosis: It is judged that the power module is faulty, the internal components are aging, and the stability of the board working state is poor, so it is recommended to replace the power board.
4.Repair plan: Replace the power strip to calibrate the output voltage and strengthen the internal firmware.
Maintenance cycle: 3 working days.
Warranty duration: 6 months.