Power On and Off the PT-500, Batteries, Main Battery

Chapter 2 Installation

2.1 Power On and Off the PT-500

Press the Power Key ? located near the bottom left corner to turn the terminal on and off. As a safeguard, the unit can only be turned off by pressing the power key ? for at least 3 seconds.

2.2 Batteries

Main Battery

The PT-500 operates with either a rechargeable nickel metal-hydride (NiMH) battery pack or three standard AA size alkaline batteries. When the main battery is running low, the LCD display will start blinking. If the unit is switched off and on again, a warning message stating “MAIN BATTERY LOW” will appear on the LCD display.

NiMH Battery Pack

Battery Installation Procedure:

1.Turn off the terminal and place it face down.

2.Move the battery compartment latch to the left to open. Remove the battery cover.

3.Insert the main batteries:

?NiMH battery:

Place the battery with label facing up; firmly push the whole pack inside the compartment.

?Alkaline batteries: