PCAN-Router Pro FD – User Manual
18
4.3
Changing the Button Cell for the Real-
Time Clock (RTC)
The real-time clock (RTC) installed in the PCAN-Router Pro FD is
supplied by a button cell of the IEC type CR1620 (3 V) as long as the
device is switched off (without power supply).
Figure 8: Position of the button cell for the real-time clock on the main board
A new button cell lasts several years. If the internal clock indicates
an unexpected time, remove the button cell, and measure its
voltage. The nominal voltage is 3.0 volts. If the measured voltage is
lower than 2.5 volts, replace the button cell.
Attention!
Electrostatic discharge (ESD) can damage or destroy
components on the card. Take precautions to avoid ESD.
Do the following to replace the button cell:
1.
Disconnect the device from the power supply.
2.
Remove the two upper screws on the front and back of the
housing.
