Diagnosis workflow
| Stage | Purpose | Record |
|---|---|---|
| Symptom review | Understand what customer noticed | Issue description |
| History check | Find recent drops updates liquid exposure or prior repairs | Customer notes |
| External inspection | Check visible condition before opening | Photos and condition note |
| Basic safe tests | Confirm obvious power display charging or software signs | Test checklist |
| Fault isolation | Separate part issue software issue or board issue where possible | Technician note |
| Estimate | Prepare repair option cost and risk | Quote details |
| Customer approval | Get permission before paid work | Approval record |
Diagnosis should explain uncertainty
Some faults are not fully visible until parts are tested or the device is opened. Good staff explain what is known what is uncertain and what may change.
Fast guesses can create customer anger if the real fault is different. It is better to explain the process honestly.
This article is for general repair center planning and operations. Real repair businesses must follow local consumer protection tax warranty data privacy employment electrical safety and electronic waste rules.
Customer devices can contain private files photos accounts business records and messages. Staff should access only what is required for the approved repair and should get clear permission before data related work.