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Chapter 4 — Maintaining the Computer
751G Color Mobile Computer User’s Manual 109
Cleaning the Scanner
To keep the 751G in good working order, you may need to clean the EA11
scanner window.
Clean the scanner window as often as needed for the environment in which
you are using the 751G. To clean the 751G, use a solution of ammonia and
water.
Press the power switch to turn off the 751G. Dip a clean cloth towel in the
ammonia solution and wring out the excess. Wipe off the scanner window,
wipe dry. Do not allow abrasive material to touch this surface.
751G with EA11 Scanner. Note that this is the top of the unit.
The input device attached to the
751G does not work well or read
bar code labels very quickly.
Set the Scanner Model command to the specific attached input device. Check
enabled bar code symbologies and enable only the symbologies being used.
The scanner will not read the bar
code label.
Aim the scanner beam to cross entire bar code label in one pass. Vary the scanning
angle.
Check the quality of the bar code label, Scan a bar code label that you know will
scan. Compare the two bar code labels to see if the bar code quality is too low. You
may need to replace the label that you cannot scan.
Ensure the bar code symbology is enabled. Use the Intermec Settings applet to
check the symbologies. Expand Data Collection > Symbologies beneath devices
listed (scanner, virtual wedge) to check and enable symbologies, then scan the bar
code label again.
Ensure the 751G application is expecting input from a bar code. You may need to
type this information instead.
The scanner does not read the bar
code labels quickly, or the scanning
beam seems to be faint or obscured.
The scanner window may be dirty. Clean the window with a solution of ammonia
and water. Wipe dry. Do not allow abrasive material to touch the window.
You scan a valid bar code label to
enter data for your application. The
data decoded by the scan module
does not match the data encoded in
the bar code label.
The 751G may have decoded the bar code label in a symbology other than the
label’s actual symbology. Try scanning the bar code label again. Make sure you scan
the entire label.
There are no user-serviceable parts inside the 751G. Opening the unit
will void the warranty and may cause damage to the internal
components.
Problems While Scanning Bar Codes (continued)
Problem Solution
EA11 Scanner