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 |
