Honeywell N431X User Manual

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Repairs and/or upgrades are not to be performed on this product.  These ser-
vices are to be performed only by an authorized service center (see 

Your device provides reliable and efficient operation with a minimum of care.  
Although specific maintenance is not required, the following periodic checks 
ensure dependable operation:

Inspect the interface cable and connector for wear or other signs of dam-
age.  A badly worn cable or damaged connector may interfere with engine 
operation.  Contact your distributor for information about cable replace-
ment.  

The engine automatically performs self-tests whenever you turn it on.  If 
your engine is not functioning properly, review the following Troubleshoot-
ing Guide to try to isolate the problem.

If the laser aimer isn’t illuminated, check that:

•

The cable is connected properly.

•

The host system power is on (if external power isn’t used).

If the engine isn’t reading symbols well, check that the symbols:

•

Aren’t smeared, rough, scratched, or exhibiting voids.

•

Aren’t coated with frost or water droplets on the surface.

•

Are enabled in the engine or in the decoder to which the engine 
connects.

The bar code is displayed on the host device correctly, but you still have to 
press a key to enter it (the Enter/Return key or the Tab key, for example).

•

You need to program a suffix.  Programming a suffix enables the engine 
to output the bar code data plus the key you need (such as “CR”) to enter 
the data into your application.  Refer to