11 
3  Using the Printer 
3.1  Initial Power-Up and Self-Test 
Once the Battery is charged and the paper is loaded, an initial 
power up self-test can be performed:  
•  Press the <ON/OFF> switch once. This turns the printer on. 
LED #1 illuminates in green, blue or amber depending on the 
mode of communication. 
  The printer will stay ON until it is manually turned OFF. 
  If the printer is set for Bluetooth communication mode the 
printer will stay on all the time. Pressing the <ON/OFF> 
switch again will turn the printer off. 
•  Press the <ON/OFF> switch to turn the printer off. The LED 
turns off. 
•  To start the self-test, press and hold the <FEED> switch then 
press the <ON/OFF> switch. 
•  The printer will start printing the self-test message. Release 
the <FEED> and <ON/OFF> switches. 
  Press the <ON/OFF> or <FEED> switch to stop or cancel 
the self-test print. 
  The first few lines of self-test show the printer firmware 
version, the current printer settings (for example 
Bluetooth or USB mode) and a list of any optional or 
special features installed. Figure 9
 shows a printing 
sample.
 
 
 
3.2  Connecting the Printer 
•  The APEX 4 printer supports USB and Bluetooth ™ communication as default 
communication interfaces.  WiFi communication and IrDA is also available as an optional 
feature.  
•  USB, Bluetooth™, and 802.11 communication settings can be changed via a DIP switch 
located on the control card. See Figure 10 for details. 
•  Printer drivers for Windows 95/98/NT/2000/ XP, Vista and Windows 7 are available from 
Datamax-O’Neil. 
 
 
 
 
 
FIGURE 9: 
SELF-TEST