Symbol LS3478-ER, Справочное руководство

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Symbol LS3478 Product Reference Guide 3-4
Troubleshooting
Table 3-1. Troubleshooting
Problem Possible Causes Possible Solutions
Scanner emits short low-short medium-short
high beep sequence. Scanner is powering up. Normal when scanner battery is inserted.
Scanner emits short high-short high-short low-
short-low beep sequence. Radio failure. Cycle power to the cradle and re-attempt pairing.
Nothing happens when scan trigger is pressed. No power to the scanner. Check battery.
Ensure that end cap to battery chamber is secured.
Scanner is disabled. For Simple Serial Interface (SSI), Synapse, or IBM-468x mode, enable
the scanner via the host interface. Otherwise, call Motorola
Enterprise Mobility Support (see
page xvi ) for contact information).
If using RS-232 Nixdorf B mode, CTS is
not asserted. Assert CTS line.
Laser comes on, but scanner does not decode the
bar code. Scanner is not programmed for the
correct bar code type. Ensure the scanner is programmed to read the type of bar code being
scanned.
Bar code symbol is unreadable. Check the symbol to ensure it is not defaced. Try scanning test bar
codes of the same bar code type. See
Appendix C, Sample Bar Codes
for test bar codes.
Bar code is out of range from the
scanner. Move scanner closer to or further from bar code.
Scanner emits four short high beeps. Battery is low. Charge the battery. See Charging the Battery on page 1-10 .
Scanner emits a disconnect (short high-short low)
beep sequence. Scanner has disconnected from cradle
because it is too far from the cradle. Move closer to the cradle and listen for a reconnection beep (short
low-short high).
Scanner has disconnected from the
cradle because the cradle has lost
power or been placed in USB suspend
mode. Check power connections to cradle, and if using a USB cable, check
to make sure PC has not entered a power save mode.
Scanner emits four long low beeps after scanning
a bar code. Cradle has not completed USB
initialization. Wait several seconds and scan again.
Incorrect host interface cable is used. Ensure that correct host interface cable is used.
Interface/power cables to cradle are
loose. Ensure all cable connections are secure.
Scanner is not paired to a cradle. Scan the PAIR bar code on the cradle that is connected to the host
that is to receive data.
Scanner has disconnected. See disconnect beep sequence above.
A transmission error was detected. Ensure the cradle’s communication parameters match the host's
setting.