Citizen CL-S621 Label Font Configuration Diagnostic... | terminalfaults.org

Technical Background:

The CL-S621 printer utilizes ZPL or Datamax emulations to interpret print commands. Font configurations are typically defined within these command languages. Incorrect font settings can be stored in the printer's non-volatile memory (NVM) or can be influenced by the host system's printer driver settings. Signal integrity on the data cable (USB or serial) can also impact proper command transmission, leading to font rendering errors.

Symptoms:

Labels are not printing with the desired font style or size. The printed output deviates from the expected font configuration.

Possible Causes:

Incorrect font selection or size specified in the label printing software.
Incorrect or corrupted printer driver installed on the host system.
Font parameters not properly configured within the ZPL or Datamax code being sent to the printer.
Data transmission errors due to a faulty USB or serial cable.
Font cache corruption within the printer's firmware.
Conflicting font settings from previous print jobs stored in printer memory.

Solution:

1

Verify font settings in the label printing software. Ensure the desired font style and size are selected.
2

Reinstall the latest printer driver from the Citizen website or a trusted source. Clear any previous driver systems.
3

Review the ZPL or Datamax code being sent to the printer. Ensure that the font selection commands (e.g., ^A for ZPL, FONT command for Datamax) are correctly implemented.
4

Try using a different, known-good USB or serial cable to eliminate data transmission issues.
5

Perform a printer reset to factory defaults using the printer's control panel or configuration utility. This will clear any potentially corrupted font settings.
6

If using a custom font, verify that the font is supported by the printer firmware and properly installed on the host system.
7

Consult the Citizen CL-S621 programming manual for detailed information on font selection and configuration commands.

Safety Warning:

Safe Handling: Always unplug the printer from the power source before inspecting or cleaning cables. Avoid contact with the print head as it may be hot after printing. Static electricity can damage electronic components. Discharge static by touching a grounded metal object before handling the printer or its cables. Ensure the printer is placed on a dry, stable surface.

Prevention:

Regularly update printer drivers. Avoid using excessively long or damaged data cables. Periodically clean the printer's exterior with a dry, static-free cloth. Ensure adequate ventilation around the printer to prevent overheating. Implement cable strain relief to prevent damage to the USB or serial connection.

Expert Tip:

Try sending a simple ZPL or Datamax font selection and text print command directly to the printer using a terminal program (e.g., PuTTY) to isolate whether the issue lies with the printing software or the printer itself. For example, for ZPL use: ^XA^A0N,25,25^FO20,20^FDTest Font^FS^XZ. If the test print fails, the problem is likely with the printer configuration.

Frequently Asked Questions

•What ZPL or Datamax commands are used to specify font size?

For ZPL, the ^A command controls font selection and size. For Datamax, the FONT command is used.

•How do I perform a factory reset on the CL-S621?

Refer to the Citizen CL-S621 user manual for the specific steps to perform a factory reset via the control panel or configuration utility.

•Where can I download the latest printer driver for the CL-S621?

The latest printer driver can be downloaded from the Citizen Systems website or a trusted driver repository.

Citizen CL-S621 Label Font Configuration Diagnostic Report

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What ZPL or Datamax commands are used to specify font size?

•How do I perform a factory reset on the CL-S621?

•Where can I download the latest printer driver for the CL-S621?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: