Several Test Points are available to provide test measurement capabilities to
some of the nets in the board. A list of accessible Test Points is described below:
Table 3-14. Test Point Probes| Reference | Function |
|---|
| TP2 | Line 1 |
| TP4 | +12V |
| TP5 | Neutral |
| TP6 | GND |
| TP9 | +3V3 |
| TP10 | +5V |
| TP12 | 3V3 Back-Up (next to coin
battery) |
| TP13 | GND |
Table 3-15. Test Point Pads| Reference | Function | Reference | Function |
|---|
| TP1 | +12V | TP29 | IP1 |
| TP3 | Flyback
Converter Output | TP30 | IP2 |
| TP7 | +3V3 | TP31 | GND |
| TP8 | +5V | TP32 | GND |
| TP11 | Coin Cell
Battery | TP33 | IN1 |
| TP14 | VDD3V3 | TP34 | IN2 |
| TP15 | VDDLCD | TP35 | Isolated UART TX |
| TP16 | VREFP | TP36 | Isolated UART RX |
| TP17 | VDDOUT | TP37 | GND |
| TP18 | VDDPLL | TP38 | Opto-Isolated UART RX |
| TP19 | 3V3 Back-up | TP39 | LED VISIBLE |
| TP20 | VDDA | TP40 | Opto-Isolated UART TX |
| TP21 | VREF_AFE | TP41 | LED IR |
| TP22 | VDDIN_AFE | TP42 | ERASE |
| TP23 | VP1 before
RC Filter | TP43 | NRST |
| TP24 | VP1 | TP44 | FWUP |
| TP25 | GND | TP45 | Xplained PRO, pin 1 |
| TP26 | VP2 before RC Filter | TP46 | Tamper |
| TP27 | VP2 | TP47 | Scroll Up |
| TP28 | GND | TP48 | Scroll Down |
