HP (Hewlett-Packard) 12C ユーザーズマニュアル

 

File name: hp 12c pt_user's guide_English_HDPMF123E27  Page: 261 of 275   
Printed Date: 2005/8/1   

Dimension: 14.8 cm x 21 cm 

 

If it appears that the calculator will not turn on or otherwise is not operating 
properly, use one of the following procedures. 

For a calculator that does not respond to keystrokes: 

1.  Insert a thin, pointed object all the way into the reset hole near the battery 

compartment and then remove it. 

 

2.  The display will show Pr Error. Pressing any key will clear this message 

from the display. 

3.  If the calculator still does not respond to keystrokes, remove and reinsert the 

battery. Make sure that the battery is properly positioned in the battery 
compartment. 

4.  If the calculator does not turn on, install a fresh battery. If there is still no 

response, the calculator requires service. 

For a calculator that does respond to keystrokes: 

1.  With the calculator off, hold down the ; key and press §. 
2. Release the ; key, then release the § key. This initiates a complete test of 

the calculator’s electronic circuitry. If everything is working correctly, within 
about 25 seconds (during which the word running flashes) the display 
should show –8,8,8,8,8,8,8,8,8,8, and all of the status indicators (except 
the 

  battery power indicator) should turn on.

*

  If the display shows Error 

9, goes blank, or otherwise does not show the proper result, the calculator 
requires service.† 

                                                 

*

 The status indicators turned on at the end of this test include some that normally are not 

displayed on the hp 12c platinum. 

†

 If the calculator displays Error 9 as a result of the ;/µ test or the ;/+ test but you 

wish to continue using your calculator, you should reset Continuous Memory as described on 
page 86.