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Maintenance and Troubleshooting
SECTION 4
4-8
6400 Hand-Held Computer User’s Guide
Table 4-1 continued
Basic Troubleshooting
Condition Solution
Computer Does
Not Scan Bar Code
WARNING
: Do Not Look Into Scanner
* Ensure that there is a main battery in.
* Ensure that the main battery is charged.
* Ensure that the battery compartment door is closed.
* Ensure the bar code symbology is turned On. Application
has to have scanner turned On.
* Ensure the scanner lens is clean.
* Ensure the bar code is free of smears or dirt.
Refer to instructions for
Scanning
beginning on page 2-15.
Pressing The Scan
Key Does Not Turn
ON Computer
* Normal operation is that the scan key on computer wakes
it up, but if using a tethered scanner it does not.
* Ensure that there is a main battery installed.
* Ensure that the main battery is charged.
* Ensure that the battery compartment door is closed.
Can Not Scan
Interleaved 2 Of 5
Bar Codes
Interleaved 2 of 5 only decodes bar codes that are exactly
the same number of characters as programmed into the
integrated scanner lengths 1 and 2 parameters. By default,
the lengths are 14 and 0. A length of 0 means disabled, so
only 14 character bar codes will decode. Ensure one of the
lengths is set to the length of your bar code and the other
disabled. Do not leave both lengths set, if only one is
needed, because Interleaved 2 of 5 can easily mis-decode
into an incorrect length.