Repair the Keyence LiDAR, which keeps flashing red light and triggering an alarm when turned on

Repair the Keyence LiDAR, which keeps flashing red light and triggering an alarm when turned on

Shanghai Yaoyou Electric Co., Ltd. repairs the Keyence laser radar, which keeps flashing red lights when turned on. We repair the Keyence laser radar/Keyence laser scanner and industrial equipment quickly and effectively. Our company's inventory includes various series of Keyence accessories and core components such as modules, capacitors, and chips that are original and not easily damaged. 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

Output circuit diagnosis:
-Parallel voltage regulator (such as TL431) reference terminal voltage (2.5V reference)
-Does the resistance of the current detection resistor (mostly a milliohm level surface mount resistor) increase
-Contact resistance of output terminal relay (RLY1) contact (should be<50m Ω)Analysis of Typical Fault Cases
Case 1: No output accompanied by the indicator light turning off
-Fault point: Input fuse (F1 250V/10A) blown
-Deep root cause: breakdown and short circuit of the rear DC-DC module (U2 model: LM2596)
-Solution: After replacing the module, it is necessary to synchronously check the characteristic curve of the feedback optocoupler (PC817)Case 2: Output voltage fluctuation
-Fault point: The ESR value of the output filtering capacitor (C25 2200 μ F/35V) exceeds the standard
-Detection method: Use a capacitance meter to measure if the capacity attenuation is greater than 30%, and replace it
-Attention: It is recommended to replace electrolytic capacitors (including C26-C28) in groupsCase 3: Voltage drop after loading
-Fault point: Open circuit on the secondary side of current transformer (CT1)
-Emergency response: Short circuiting the J4 jumper can temporarily restore, but it will lose overcurrent protection
Repair the Keyence LiDAR, which keeps flashing red light and triggering an alarm when turned on

-Standardized maintenance: Replace the transformer of the same model (parameters: 50A/5mA)Deep maintenance suggestions
1. Maintenance of the cooling system:
-Clean the dust accumulation on the blades of the axial flow fan (model: EFB0512HA)
-Re apply thermal grease (such as Shinetsu 7762) to the contact surface of the radiator
-Check if the air duct is blocked by cables