Preliminary Draft 3
Chapter 3: Getting To Know Your 7545
Troubleshooting
3.6.3
Troubleshooting
If the scanner is not working, investigate the following:
• Is the unit on?
• Check that the bar code symbology being scanned is enabled for the hand-held you are using. Check any other parameters that affect the scanning procedure or the bar code.
• Check the bar code to make sure it is not damaged. Try scanning a different bar code to verify that the problem is not with the bar code.
• Check that the bar code is within the proper range.
• Does the hand-held display the warning without scanning? This suggests a hardware problem in the hand-held.
• Is the laser beam scanning across the bar code?
• Once the scan beam has stopped, check the scanner window for dirt or fogging.
3.6.4
Operating One Dimensional (1D) Internal Laser Scanners
• Turn the hand-held on. Wait until the unit has booted up completely.
Important: If an aiming dot is available on the installed scanner, the dot will be enabled for a configurable time period (including off), after which normal scanning
begins. Refer to “Dot Time (msec)” on page C-8 for details.
Double-clicking the trigger will override the aiming delay and initiate an immediate scan. Note that the aiming dot is standard on long-range and high visibility internal scanners.
• Aim at the bar code and press the scan key or the trigger. A scan beam and a warning indicator appear until a successful decode is achieved or six seconds have elapsed.
3.6.5
Operating Internal PDF Laser Scanners
This scanner decodes PDF417 two-dimensional bar codes.
• Turn the hand-held on. Wait until the unit has booted up completely.
• Aim at the bar code and press the scan key or the trigger. The beam expands into a rectangle covering the bar code to properly scan it. The scan beam and a warning indicator are visible until a successful decode is achieved or three seconds have elapsed.
60 Psion Teklogix 7545 Hand-Held Computer User Manual
