Panasonic PT-RS30K Service Manual page 37

SECTION 1 SERVICE INFORMATION
4. 1. 4. Lithium battery
1. The lithium battery is used for the internal clock in the A-P.C.Board. So when it consumed it must be replaced.
Lithium battery : CR2032
2. After replacing the lithium battery, surely set the "Date and Time" on the sub-menu in the main menu "projector set up".
* Use only specified lithium battery.
* Used battery must be scrapped according to the instruction.
INF-27
<RZ31K/RS30K>