1. Reversed troubleshooting logic: Skipping easily checked items-such as error codes or basic power and air supplies-and immediately dismantling core components, thereby destroying the fault's original state and losing vital clues.
2. Blindly replacing parts without testing: Swapping out sensors, motors, or other accessories without verifying their condition using tools like a multimeter; this fails to identify the root cause and risks introducing new faults.
3. Completely ignoring parameter verification: Focusing solely on mechanical structures while overlooking parameter drift in tension, blade gaps, or edge-guiding thresholds, resulting in an inability to resolve slitting-related issues despite repeated adjustments.
4. Proceeding directly to mass production without validation: Skipping no-load test runs and sample cuts after repairs; undetected precision deviations lead to the scrapping of entire batches of finished products.
5. Lack of experience documentation: Failing to maintain fault logs, leading to recurring issues and the inability to build an equipment-specific troubleshooting knowledge base, which keeps future troubleshooting efficiency low.
6. Introducing new problems through improper handling: Failing to mark components during disassembly or installing them incorrectly; minor faults are artificially exacerbated, ultimately rendering the equipment completely inoperable.
