Honeywell Xenon 1900 Scanner Solid Red Light Diagnostic... | terminalfaults.org

Technical Background:

A solid red light typically indicates a critical internal error state. This can be due to firmware corruption, a hardware fault within the scanning engine (laser diode failure or CMOS imager issue), or a communication breakdown with the host system. The device's internal diagnostic routines have detected an unrecoverable error. Error reporting occurs through distinct signalling protocols; a solid red LED suggests complete subsystem failure.

Symptoms:

The Honeywell Xenon 1900 barcode scanner displays a continuous solid red light. The scanner is unresponsive to barcode presentation or trigger activation.

Possible Causes:

Firmware corruption due to power interruption during update.
Failure of the laser diode or LED illumination source within the scan engine.
Damaged or loose communication cable (USB or RS-232), resulting in data transmission failure.
Power supply issue: Insufficient voltage or current reaching the scanner.
Internal electronic component failure (e.g., capacitor, resistor) on the main PCB.
ESD (electrostatic discharge) damage to sensitive electronic components.

Solution:

1

Safe Handling: Disconnect the scanner from the host system (unplug the cable).
2

Inspect the communication cable for physical damage (cuts, crimps, excessive bending).
3

Verify the scanner is receiving adequate power. Test with a known working power supply or USB port.
4

Attempt a power cycle: Disconnect the scanner for 60 seconds, then reconnect.
5

If possible, connect the scanner to a different host system to rule out host-specific issues (driver incompatibility).
6

Check the Honeywell website for available firmware updates. Apply the update ONLY if the scanner is momentarily recognized by the host system. If it is not recognized, do NOT attempt a flash. This could permanently damage it.
7

Contact Honeywell support for advanced diagnostics or RMA (Return Merchandise Authorization) if the above steps fail.

Safety Warning:

Electrostatic discharge (ESD) can damage the scanner. Avoid touching the connector pins or internal components. Ensure the scanner is disconnected from the power source before cleaning. Do not submerge the scanner in liquid. Cable strain can damage the connector. Provide adequate slack in the cable.

Prevention:

Provide adequate strain relief for the communication cable to prevent damage to the connector or internal wiring.,Regularly clean the scanner window with a lint-free cloth and approved cleaning solution to maintain optimal scanning performance. Avoid abrasive cleaners.,Implement ESD prevention measures, especially during dry winter months (anti-static mats, grounding straps).,Ensure a stable power supply to prevent voltage fluctuations that could damage the scanner.,Avoid exposing the scanner to extreme temperatures or humidity.

Expert Tip:

A solid red light can sometimes be triggered by an incomplete configuration. Attempt a factory reset (if the device is momentarily responsive). Refer to the Honeywell Xenon 1900 documentation for the correct key sequence or configuration barcode to initiate a factory reset. If the scanner supports it, try a different communication protocol (e.g., switch from USB HID to USB COM).

Frequently Asked Questions

•Is the scanner under warranty?

Check the warranty status. Contact Honeywell support if the scanner is under warranty and the troubleshooting steps have not resolved the issue.

•What is the host system's operating system?

Incompatibility issues may arise between the scanner and host systems. Knowing the OS can help determine the next steps, such as verifying scanner drivers or updating the device’s firmware.

•Has the scanner been recently dropped or exposed to liquids?

Physical damage and liquid exposure could cause the failure. Report any relevant incidents to better understand the cause of the red light error.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Is the scanner under warranty?

•What is the host system's operating system?

•Has the scanner been recently dropped or exposed to liquids?

Related questions

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Symptoms:

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Solution:

Safety Warning:

Prevention:

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