Repair Olympus Industrial Endoscope Tube Unable to Rotate (Original Parts Repair)

Shanghai Yaoyou Electric can repair Olympus industrial endoscope maintenance faults: automatic repeated restarts when turned on, unable to enter the system when turned on, no response when turned on, power on panel not lit, black screen not lit when turned on, white screen with flower screen flashing and blue screen repair, no image repair on the display screen, missing image repair on the display screen, blurry and unclear image on the display screen, no response to bending tube operation repair, bending tube cannot rotate, bending tube cannot rotate, bending tube has insufficient angle and angle, insertion tube is damaged and broken, panel touch failure and no response, bending tube is damaged and broken for repair, operation handle joystick fault knob fault

Targeted maintenance steps**
*Maintenance of cooling system:*
-Remove the fan and measure the working voltage (usually 24VDC ± 10%), then manually move the blades to check the resistance
-Cleaning the heat sink requires the use of a specialized fin comb to avoid deformation that affects air flow
-When replacing thermal grease, phase change materials (such as TIM-10, with a thermal conductivity of ≥ 5W/m · K) should be usedElectrical parameter adjustment:*
-For constant torque loads, reduce the carrier frequency to the range of 4-6kHz
-Extend the acceleration time to the maximum allowable value of the process (recommended ≥ 3s/100rpm)
-Enable Automatic Voltage Regulation (AVR) function to compensate for grid fluctuationsHardware replacement standard:*
-Electrolytic capacitor capacitance value<60% of nominal value or ESR>3 times the specification sheet
-IGBT module gate resistance drift>± 20%
-Zero offset of current sensor>5% of full scaleDeep maintenance case**
The EUROTHERM 690+frequency converter equipped with a certain injection molding machine repeatedly reports OH faults, and the repair process reveals a typical composite problem:
-Phase 1: After replacing the faulty fan, the temperature dropped by 12 ℃, but the alarm still sounded after running for 4 hours
-Phase 2: A thermal imaging device was used to detect a hot spot of 85 ℃ in the brake resistor wiring terminal. After tightening, the temperature dropped to 45 ℃
-Phase 3: The oscilloscope detected a 20kHz oscillation in the DC bus, which was resolved by replacing the DC support capacitor