HP 48gx User Manual

Lesson 39: Troubleshooting
If the HP 48 is stuck in an unfamiliar state:
m Press several times, until you see the normal stack display.
To undo a mistake:
m To remove the last result and get back the original data, press
@) (1100) (above the key).
m To clear stack level 1, press (DROP).
m To clear the entire stack, press (CLEAR).
m To retrieve a previous command line you executed (so you can
change it or execute it again), press (@)(CVD (above the key).
m To keep the last result and get back the original data, press
@ 00)
To reset all calculator operating modes without erasing memory:
If the calculator doesn’t respond when you press the keys:
1. Press several times.
2. If the keyboard is “locked,” or the XE annunciator won’t turn off,
perform a system halt:
a. Press and hold (ON).
b. Press and release the “C” menukey.
c. Release (ON). The empty stack display should appear.
3. If the HP 48 doesn’t respond to the system halt from the keyboard,
try to halt the system directly (without using the keyboard), as
described on page 5-17 of HP 8G Series User's Guide.
4. If the problem still exists, perform a memory reset. (See page 5-17
of HP }8G Series User’s Guide.)
If these steps fail to restore operation, the calculator requires service.
To reset the calculator (and erase all memory):
1. If there’s anything in memory you want to keep, don’t reset the
calculator.
2. Press and hold (ON).
9-2 If Things Go Wrong . ..

HP 48gx Specifications

General

Brand	HP
Model	48gx
Category	Calculator
Language	English