Brand
Keyue
Brand represented in training and service manual sources for ZX7, NBC, WSME and LGK machines.
Brand/platform role
Keyue is treated as a platform reference. Many inverter welders are sold under different labels but share board families, chips and fault patterns.
Why it matters
Brand represented in training and service manual sources for ZX7, NBC, WSME and LGK machines.
Repair-data focus
- Identify model families and board families.
- Map common chips and control boards.
- Connect fault symptoms to repair cases.
- Avoid relying only on brand labels when OEM boards are shared.
Typical diagnostic path
Brand / platform name
↓
Model family
↓
Board family
↓
Chip and circuit function
↓
Fault symptom
↓
Repair case