Component Involved:
| 1 | NTC Transformer |
| 2 | Network Crystal |
| 3 | Realtek 82018B Chip |
| 4 | Flash IC Chip |
Changing step:
For TCP/IP connection issue, replace the NTC transformer (1) at priority, follow by network crystal (2), and Realtek 82018B Chip (3).
If the mentioned component replaced but the connection still not working, change new Flash IC Chip (4)**.
**The IC Chip must be purchased from FingerTec. Provide the model number of the fingerprint reader when you purchase the component.
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| Core Board Rear View |
Core Board Front View |