Backup clock data uses a Supercapacitor (electric double-layer capacitor) for power. When the voltage from the Supercapacitor is low, clock data is lost^*1 when this product is turned OFF. The average period for backup is as follows:

Initial: approximately 100 days

After 5 years: approximately 30 days (when used with an ambient temperature of 25 °C [77 °F])

*1 On the Standard Box and the Power Box, if clock data is lost, a clock data error message appears when starting up this product. When this happens, leave this product ON for at least 5 minutes, and then set the clock again. Refer to your screen editing software manual on how to set up the clock.

By connecting the optional backup battery (Model Number PFXZCBBT1) for clock data backup, you can maintain a backup period of up to 5 years or more (when used with an ambient temperature of 25 °C [77 °F]). However, as the battery expires after 5 years, we recommend regularly changing the battery every 5 years.

When the voltage of the Supercapacitor drops at the same time as the voltage in the Battery for Memory Backup, clock data is lost when power is disconnected. If the clock data error message appears while the Battery for Memory Backup is connected, the Battery for Memory Backup is low and requires replacement.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Remove all power from the device before removing any covers or elements of the system, and prior to installing or removing any accessories, hardware, or cables. Unplug the power cable from both this product and the power supply. Always use a properly rated voltage sensing device to confirm power is off. Replace and secure all covers or elements of the system before applying power to this product. Use only the specified voltage when operating this product. This product is designed to use 12 to 24 Vdc. Always check whether your device is DC powered before applying power. Failure to follow these instructions will result in death or serious injury.

DANGER
EXPLOSION, FIRE, OR CHEMICAL HAZARD Use only the identical replacement battery for this product. Do not cause a short circuit. Recycle or properly dispose of used batteries. Failure to follow these instructions will result in death or serious injury.

Step	Action
1	Disconnect the power supply from this product.
2	Touch the housing or ground connection to discharge any electrostatic charge from your body.
3	Place the Box Module on a flat, level surface, with the front side pointing up.
4	Open the Expansion Unit Interface Cover on the Box Module. 1 Expansion Unit Interface Cover 2 Box Module 3 Safety alert symbol (see the safety messages stated on this page and on the previous page)
5	If the Battery for Memory Backup is already installed, slide the Battery for Memory Backup in the direction of the arrow as illustrated. Unplug the cable from the connector. 1 Connector 2 Battery
6	Insert a new Battery for Memory Backup and the connector all the way. Either side of the battery can face top or bottom. 1 Connector 2 Battery
7	Close the Expansion Unit Interface Cover. NOTE: Make sure the cable is inserted completely inside the enclosure. Otherwise, you can damage the cable when you close the cover.
8	Reconnect the power supply to this product. NOTE: After reconnecting the power supply, set up the clock again. Refer to your screen editing software manual on how to set up the clock.