ACR330 Validator with QR Code Scanner
– User Manual
Version 1.02
www.acs.com.hk
Page 34 of 61
www.acs.com
.hk
2.6. Replacing the Real Time Clock (RTC) Battery
The Real Time Clock (RTC) backup power uses a CR2032 coin cell. The lifespan of the coin cell is
around 5 years. Incorrect time information may be caused by a low battery.
To replace the CR2032 coin cell:
1. Unscrew the two screws highlighted in the image below:
Note: Be careful in handling the screws as they may drop inside the validator.
2. Using a screw driver, take out the LTE board.