Specifications

Symbol LS4278 Product Reference Guide3-4
Troubleshooting
Table 3-1. Troubleshooting
Problem Possible Causes Possible Solutions
Battery
Scanner battery requires frequent charging. Battery may need reconditioning. Restore the battery by performing a battery
reconditioning cycle. See Reconditioning the
Scanner Battery on page 1-12 for more information.
Beeper Indications
Scanner emits low/high/low beeps. ADF transmit error. See Chapter 14, Advanced Data Formatting for
information about ADF programming.
Invalid ADF rule is detected. See Chapter 14, Advanced Data Formatting for
information about ADF programming.
The Code 39 buffer was erased or there was an
attempt to clear or transmit an empty buffer.
Normal when scanning the Code 39 Buffering Clear
Buffer bar code or upon attempt to transmit an
empty Code 39 buffer.
Scanner emits a low/high/low/high beep sequence
while it is being programmed.
Out of ADF parameter storage space. Erase all rules and re-program with shorter rules.
Scanner emits long low/long high beeps. Input error, incorrect bar code or Cancel bar code
was scanned.
Scan the correct numeric bar codes within range for
the parameter programmed.
Page timeout; remote device is out of range/not
powered.
Move the scanner back into range of the remote
device; try to re-connect; check remote device
configuration.
Scanner emits long low/long high/long low/long
high beeps.
Out of host parameter storage space.
Scan Default Parameters on page 5-5.
Out of memory for ADF rules. Reduce the number of ADF rules or the number of
steps in the ADF rules.
Connection attempt was rejected by remote device. Free up remote device resources.
Scanner emits high/high/high/low beeps. RS-232 receive error. Normal during host reset. Otherwise, set the
scanner's RS-232 parity to match the host setting.
Scanner emits high/low beeps. The scanner is buffering Code 39 data.
Or
Keyboard parameter selected.
Normal.
Or
Enter value using bar code keypad.
Bluetooth disconnection event. Move the scanner back into range of the remote
device.
In Master (SPP/HID) mode, re-pair the scanner and
cradle by scanning the PAIR bar code on the cradle;
check cradle power.
In Slave (SPP/HID) mode, reestablish connection
between the scanner and remote device from the
remote device side.
Scanner emits three long high beeps. Code 39 buffer is full. Scan the Code 39 bar code without a leading space
or scan Do Not Buffer Code 39 on page 13-24 to
transmit stored Code 29 data.
Scanner emits four high beeps on trigger release. Low battery. Place scanner in cradle to charge the battery.