Knowledge Base - Symbol LS4278 Barcode Scanner Troubleshooting

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Symbol LS4278 Barcode Scanner Troubleshooting
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The Motorola Symbol LS4278 is a wireless barcode scanner that transmits data through a communication base, so we have to consider more reasons for scanning failures. Below we mainly explain the problems that are common to the Symbol LS4278 barcode scanner from the problems that occur in the scanner, as well as the status of the problem and the appropriate solution.

motorola symbol ls4278 barcode scanner

Phenomenon 1: LED indicator indicates a battery temperature failure.
Possible reason: The battery is above or below the normal operating temperature.
Possible solution: Do not use a barcode scanner. Move the barcode scanner to a position where the operating temperature is normal. The barcode scanner can continue to be inserted into the cradle while warming or cooling the battery to normal operating temperature.

Phenomenon 2: The barcode scanner does not respond after pulling the trigger switch.
Possible reason 1: The Symbol LS4278 barcode scanner is not powered.
Possible solution: The battery may have been discharged; please use the cradle to charge the barcode scanner. Check that the battery cover is closed and that the end cover of the battery compartment is secure.
Possible reason 2: The Symbol LS4278 barcode scanner is disabled.
Possible solution: Some host interfaces (such as Synapse, IBM-468x) can disable this barcode scanner. If applicable, enable the barcode scanner via the host interface.

Phenomenon 3: The laser can be emitted, but the symbol cannot be decoded.
Possible reason 1: Symbol LS4278 barcode scanner does not be programed by the correct barcode type.
Possible solution: Make sure the barcode scanner is programmed to read the type of barcode you want to scan.
Possible reason 2: Symbol LS4278 bar code symbol is not readable.
Possible solution: Check the symbols to make sure the symbols are not defective. Try scanning test symbols of the same barcode type.
Possible reason 3: The distance between the Symbol LS4278 barcode scanner and the barcode is not suitable.
Possible solution: Move the barcode scanner closer to or away from the barcode.

Phenomenon 4: The symbol has been decoded, but can't be transmitted to the host.
Possible reason 1: Symbol LS4278 does not program the communication cradle according to the correct host interface.
Possible solution: Check the barcode scanner host parameters or editing options.
Possible reason 2: The Symbol LS4278 barcode scanner has not been paired with the interface connected to the host.
Possible solution: Pair the barcode scanner with the charging dock (using the "pairing" barcode on the charging dock).
Possible reason 3: The interface cable of the Symbol LS4278 barcode scanner is loose.
Possible solution: Make sure all cable connections are fixed.
Possible reason 4: The connection between the cradle and the host has been lost.
Possible solution: Please operate in strict order: disconnect the power supply; disconnect the host cable; wait for three seconds; reconnect the host cable; reconnect the power; re-establish the pairing.

Phenomenon 5: The data scanned by the Symbol LS4278 barcode scanner is not displayed correctly on the host.
Possible reason 1: The Symbol LS4278 barcode scanner was not programmed and could not be used with the host.
Possible solution: Make sure the correct host is selected. Please check the host type parameter or editing option of the Symbol LS4278 barcode scanner. For RS-232, make sure the communication parameters of barcode scanner match the host settings. For keyboard emulation configurations, ensure that the system is programmed to the correct keyboard type and that the CAPS LOCK key is off. Make sure that the editing options (for example, UPCE to UPCA conversion) are properly encoded.

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