HP -35 Owner's Handbook Manual page 11

Hewlett -Packard ships your HP-35 lully·assembled, with
banery pack 10 place, and ready 10 operale. W"h the
battery charger disconnected, slide the power SWItch to
ON. You should see a ~ero and a decimal point dIsplayed.
If any Other ind ication is present,
~ee
SERVIC lNG, page 28.