HP 40g hp 39g & 40g_user's manual_English_E_pdfbpia5212.pdf - Page 258

8. FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND: THE WARRANTY TERMS CONTAINED IN THIS STATEMENT, EXCEPT TO THE EXTENT LAWFULLY PERMITTED, DO NOT EXCLUDE, RESTRICT OR MODIFY AND ARE IN ADDITION TO THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU. CAS The HP 40G is packaged with a computerized algebra system (CAS). Refer to the CAS User Manual for further information. Resetting the HP 39G/40G If the calculator "locks up" and seems to be stuck, you must reset it. This is much like resetting a PC. It cancels certain operations, restores certain conditions, and clears temporary memory locations. However, it does not clear stored data (variables, aplet databases, programs) unless you use the procedure below, "To erase all memory and reset defaults". To reset using the keyboard Press and hold the key and the third menu key simultaneously, then release them. If the calculator does not respond to the above key sequence, then: 1. Turn the calculator over and locate the small hole in the back of the calculator. 2. Insert the end of a straightened metal paper clip into the hole as far as it will go. Hold it there for 1 second, then remove it. 3. Press . If necessary, press menu keys simultaneously. and the first and last R-4 Reference information