Intermec PB31 PB21 and PB31 Mobile Receipt Printer User Guide - Page 22

Chapter 1 - Using the PB21 and PB31 Mobile Receipt Printer Understanding the Printer Sounds (continued) Sound Error Occurs When: • The printer cannot feed paper or print a job because of a hardware issue such as the media door open, a paper jam, or there is no media. • An error occurs such as a paper jam, a print error, or the printer is out of range. Understanding the Backlight The screen backlight on the printer behaves the same way as a screen saver on your PC. After a set amount of time elapses without any user interaction, the backlight goes off. The screen backlight turns on when: • the printer begins printing. • you press a button. • you connect the printer to external power. • you are communicating with or sending data to the printer. You can change the amount of time to have elapse before the backlight turns off using the Setup menu. Options for backlight are always off, always on, 5 seconds, 10 seconds, 20 seconds, 30 seconds, or 60 seconds. Using the Batteries The printer uses a rechargeable 7.4 V 2300 mAh lithium-ion battery (Model AB27) for power. You must fully charge the battery before you can use the printer. The battery retains a charge for up to five days when the printer is in Standby mode. A fully charged battery can usually print over 300 6-inch labels (PB31) or 500 6-inch labels (PB21) at 25% print density. When the printer reports low battery, it can usually print over 50 6-inch labels at 10% print density. The number of labels you can print varies depending on these factors: • Age of the battery • Temperature and humidity of the operating environment 10 PB21 and PB31 Mobile Receipt Printer User Guide