Repair Keyence laser radar startup error, unable to start repair

Repair Keyence laser radar startup error, unable to start repair

Shanghai Yaoyou Electric Co., Ltd. repairs Keyence laser radar with startup error and cannot be started for repair. Keyence laser radar repair/Keyence laser scanner repair industrial equipment is done well and repaired quickly. Our company's inventory of various series of Keyence accessories and repair required accessories, modules, capacitors, chips and other core accessories are all original and not easy to break after repair. Many of them are scrapped after repair. If repairs are needed, they can be sent to our company for processing. In addition, our company's Keyence laser radar simulation testing platform and other online speedometers are complete. With the addition of the Keyence repair team, we can ensure the success rate of laser radar repairs. Our company has gained recognition from peers and users with reasonable prices and good reputation

Power off operation: First, ensure that the device is powered off and use a multimeter to confirm that there is no residual voltage at the input terminal. ADL power supplies are usually equipped with energy storage capacitors and require a waiting time of at least 5 minutes for discharge to complete.
2. Appearance inspection: After opening the chassis, focus on observing:
-Is the power module connector oxidized (such as common poor contact at the CN3 terminal)
-Do power devices (IGBT/MOSFET) have bulges or cracks
-Is there any burn marks on the PCB board (especially around the high-frequency transformer)Key circuit measurement process
1. Input side detection:
-Measure the insulation resistance of L/N-PE using a megohmmeter (should be>100M Ω)
-Check if the common mode inductance of the EMI filter (usually located behind the input port) is open circuited
Repair Keyence laser radar startup error, unable to start repair

-Test the forward and reverse resistance values of the rectifier bridge stack (labeled BR1), which should comply with the diode characteristics under normal conditionsPower conversion process:
-Voltage at the VCC pin of a PWM controller (such as UC3845) (12-17V is normal)
-Switching transistor gate drive waveform (requires oscilloscope detection, frequency should be consistent with nominal value)
-High frequency transformer secondary winding on/off test (resistance generally<1 Ω)