Installation manual
DS4800 REFERENCE MANUAL 
108 
9 
TROUBLESHOOTING GUIDE 
Problem  Suggestions 
Power On: 
the “Power 
On”/”Ready” LED is not 
lit 
Is power connected? 
If using a power adapter (like PG 6000), is it connected to a wall 
outlet? 
If using rail power, does rail have power? 
If using CBX100, does it have power (check switch and LED)? 
Measure voltage either at pin 13 and pin 25 (for 25-pin 
connector) or at spring clamp Vdc and GND (for CBX). 
On line Mode: 
TRIGGER LED is not lit 
(when external trigger 
activates) 
Is sensor connected to I1A, I1B spring clamps (for CBX) or to 
pins 18 and 19 (for 25-pin connector)? 
Is power supplied to photo sensor? 
Are the photo sensor LEDS (if any) working correctly? 
Is the sensor/reflector system aligned? 
On line Mode: 
TRIGGER LED is 
correctly lit but nothing 
happens (no reading 
results) 
Is the software configuration consistent with the application 
condition (operating mode etc.)? 
In the Genius™ program select the Operating Mode branch and 
check for related parameters. 
Serial On line Mode: 
the reader is not 
triggered (no reading 
results) 
In the Genius™ program select the Operating Mode branch and 
check if Serial On Line is selected in the On Line Options. 
Are the Start – Stop characters correctly assigned? 
Is the serial trigger source correctly connected and configured? 
On line Mode and 
Serial On Line: 
Reader doesn’t 
respond correctly to the 
expected external 
signals end 
In the Genius™ program select the Operating Mode branch and 
check the Reading Phase Timeout parameterization. 
X-PRESS™: 
X-PRESS™ functions 
don't work. The 
multifunction keypress 
has no effect. 
Check if the multifunction key is Locked through the Key 
Functionality parameter. 
Check if the multifunction key is Partially Locked through the Key 
Functionality parameter. Only the X-PRESS™ Autolearn function 
will be enabled and will only read the Lock/Unlock programming 
barcode. A message indicating this state is shown on the 
DS4800 Display. 
X-PRESS™: 
X-PRESS™ functions 
don't work. LEDs light 
up but do not allow 
access to the functions. 
Except for the Focus Lock/Unlock function, the X-PRESS™ 
functions don't work if the scanner motor or laser are turned off. 
Check if the motor or laser are turned off through the following 
parameters: 
  Beam Shutter = enabled 
  Scan Speed = Motor Off 
  Energy Saving>Serial Motor Off has been sent 
A message indicating one of these states is shown on the 
DS4800 Display. 










