User manual CASIO PV-250X HARDWARE

[. . . ] 14 Battery Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 To replace the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 To turn power on and off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Auto Power Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] assumes no responsibility for any loss or claims by third parties that may arise from the use of this product. 10 Chapter 1 Getting Acquainted Data Errors The PV Unit performs a self-check routine whenever you turn it on. The message shown below appears if the PV Unit detects a problem with data stored in its memory. Once data is lost due to a data error it cannot be recovered. · · · Interruption of battery power Severe electrostatic charge, strong impact, changes in temperature, or changes in humidity Hardware problems Once the data error message appears, the PV Unit will not accept any input or editing of data. In order to return memory to normal (and permit further data editing and input), you have to perform the RESET operation to clear all data. Before doing so, you may want to recall important data and write it down (if you don't yet have a copy). Continued problems after performing the RESET operation can indicate a serious hardware problem. Consult with your nearest CASIO dealer if problems persist. 11 To reset after viewing data 1. Now you can enter other modes to recall data and make handwritten copies if you want. After recalling the data you want, perform the RESET operation under "To reset the PV Unit" on page 182. 12 Chapter 1 Getting Acquainted General Guide Action control Stylus Touch screen Cradle contacts RESET button Battery switch P P button Battery compartment cover 13 Power Supply Your PV Unit can be powered by two AAA-size alkaline batteries. · Normally the flash memory of the PV Unit retains its data even when power is turned off and when batteries go dead. Mis-operation or other problems, however, can cause data to become corrupted or lost. Always keep separate copies of important data. Low Battery Warning The message shown below appears whenever battery power drops below a certain level. Replace the batteries immediately after this message appears: Batteries are getting weak!· If you continue using the PV Unit after the low battery warning message appears, power may suddenly turn off or the contrast adjustment screen may suddenly appear. Manganese batteries provide very short battery life. Battery Precautions Incorrectly using batteries can cause them to burst or leak, possibly damaging the interior of the PV Unit. · · Be sure to use alkaline batteries only to power this PV Unit. Be sure that the positive (+) side of each battery is facing in the correct directions. · Never mix batteries of different types. 14 Chapter 1 Getting Acquainted · Never mix old batteries and new ones. · Do not expose batteries to direct heat, let them become shorted, or try to take them apart. · Never leave dead batteries in the battery compartment. · · · Remove the batteries if you do not plan to use the PV Unit for a long time. Replace batteries at least once every year, no matter how much you use the PV Unit during that period. Never try to recharge the batteries that come with the PV Unit. · Should a battery leak, clean out the battery compartment of the PV Unit immediately, taking care to avoid letting battery fluid come into direct contact with your skin. Keep batteries out of the reach of small children. · · Frequent data synchronization using the PC sync for Windows application that comes with the PV Unit shortens battery life. The batteries that come with this unit discharge slightly during shipment and storage. Because of this, they may require replacement sooner than the normal expected battery life. 15 To replace the batteries Important! [. . . ] In this manual, all data input operations are described using stylus operations. · Tap Tap the tip of the stylus on the display to press a button, select an item, select a data input field, etc. · Double-tap Tap the display twice in relatively quick succession. · Drag Touch the tip of the stylus to the screen, and drag it across the screen to select a range of text, draw a line, etc. Action Control The Action control makes it possible to perform certain PV Unit operations with one hand. [. . . ]