ASM Placement Machine Maintenance Precautions

ASM placement machine repair must strictly adhere to the principles of safety, anti-static, standardized diagnostics, and use of original manufacturer spare parts. Blind disassembly or operation while the machine is powered on is strictly prohibited.

Power off and lock/disconnect (LOTO): Before repair, the main power and gas supply must be disconnected, and capacitors must be fully discharged to prevent electric shock or accidental mechanical start-up.

Full-time anti-static protection: Wear anti-static wrist straps and anti-static clothing, and use a grounded anti-static mat, especially when handling electrostatic-sensitive components such as the motherboard, encoder, and vision system.

Accurate fault diagnosis is paramount: First, read the equipment alarm codes (such as CSB, SMPS-09 errors), observe the logs, and use the "phenomenon-module-signal chain" logic for troubleshooting to avoid aimless replacement of boards or nozzles.

Use original manufacturer or certified compatible spare parts: If replacing critical components such as feeders, pick-and-place heads, encoders, and power modules (such as SMPS-09), they must be compatible with electrical and mechanical specifications; otherwise, calibration failure or cascading damage may occur.

**Strictly prohibit hot-plugging cables and boards:** For components involving X/Y axis drives, vision interfaces, and I/O boards, power must be disconnected before disassembly and assembly in sequence. Cable positions should be marked to prevent incorrect insertion.

**Post-repair calibration and verification are mandatory:** Any repair involving the placement head, optical system, or mechanical axes must undergo nozzle height learning, coaxiality correction, mapping accuracy compensation, and CPK testing. Do not proceed directly to production.

**Environment and record control:** Repairs must be performed in a clean, dry (humidity <60%), vibration-free environment. Detailed records must be kept of the fault symptoms, operating procedures, replacement part numbers, and calibration data to establish an equipment health record.

**Complex faults require professional support:** For issues such as a red light on the power supply box (SMPS-09), CSB safety module failure, servo drive malfunction, or vision system crash, those without chip-level repair capabilities should contact an ASM authorized service provider to avoid further damage. If the SMPS-09 power supply box is involved (commonly indicated by a red light/no output), first check if the 24V control circuit is continuous, if the emergency stop (EMG) circuit is closed, and if the external regenerative resistor is open-circuited (∞ resistance). Do not directly replace the drive module. A level deviation exceeding 0.1° will cause placement misalignment and abnormal wear of the guide rails. After repair, the machine's level must be rechecked using a high-precision electronic level.

Prevention is better than cure: It is recommended to clean the nozzle/optical window every 500 hours and check the timing belt and guide rail lubrication every 2000 hours. Establish a preventative maintenance plan to reduce unexpected downtime.