Testing Calculator Operation - HP 35s User Manual

Warning
5. Insert a new CR2032 lithium battery, making sure that the positive sign (+) is
facing outward.
6. Remove and insert the other battery as in steps 4 through 5. Make sure that the
positive sign (+) on each battery is facing outward.
7. Replace the battery compartment cover.

8. Press .

Testing Calculator Operation

Use the following guidelines to determine if the calculator is working properly. Test
the calculator after every step to see if its operation has been restored. If your
calculator requires service, refer to page A–8.
The calculator won't turn on (steps 1–4) or doesn't respond when you press
the keys (steps 1–3):
1. Reset the calculator. Hold down the
necessary to repeat these reset keystrokes several times.
2. Erase memory. Press and hold down

and
displayed when you release all three keys.
A-4
Support, Batteries, and Service
Do not mutilate, puncture, or dispose of batteries in fire. The
batteries can burst or explode, releasing hazardous
chemicals.
6
. Memory is cleared and the   message is

key and press

, then press and hold down both

. It may be