SMT Placement Machine Malfunction? A 6-Step System Guide to Quickly Troubleshoot.

On a high-speed SMT production line, when a placement machine suddenly triggers an alarm or produces defective boards, it is undoubtedly the most nerve-wracking moment for every engineer and production line manager. Unplanned downtime incurs direct economic losses every minute, while chaotic emergency responses often exacerbate problems or lead to recurring failures.

Establishing a systematic, replicable fault diagnosis and resolution process is key to shifting from reactive response to proactive control. This article outlines a comprehensive strategy for addressing issues from symptom to root cause, helping you quickly pinpoint problems, resume production, and fundamentally reduce the occurrence of anomalies.

Step 1: Immediate Safe Halt and Phenomenon Verification

Step 1: Safety Pause and Quick Check (within 3 minutes)

Immediately execute upon detecting abnormalities:

1. Safety Pause: Press the equipment's emergency stop button

2. Record key information: Error code displayed on the equipment; Problem manifestation: Increased material ejection? Recognition error? Placement offset? Occurrence location (Which placement head? Which nozzle? Which feeder?)

3. Quick Check: Verify feeder installation and check for tape jams; inspect nozzles for blockages or damage; confirm normal equipment air pressure

Avoid restarting or debugging blindly before clearly identifying the phenomenon, as this may obscure the true root cause.

Step 2: Targeted Problem Diagnosis

Step 3: Standard Handling and Prevention

Standard Handling Process

Cleaning Maintenance: Clean nozzles, camera lenses, and mark points

Calibration Adjustment: Perform placement head precision calibration and feeder station calibration

Part Replacement: Replace worn nozzles and faulty feeder components

Parameter Optimization: Adjust component recognition parameters and placement parameters

Verification and Recovery

First conduct no-load tests to verify mechanical actions;

Perform small-batch trial production using test boards to validate issue resolution;

Closely monitor the quality of the first 50 pieces after formal production.

Recording and Prevention (Key Steps)

Fill out the Abnormal Condition Handling Record；Symptoms, causes, corrective actions, downtime;

Conduct a simple root cause analysis，Ask “Why?” repeatedly to identify underlying causes;Update the inspection checklist by adding newly discovered issues to the daily inspection form.