Contents

COVER
CONTENTS
Before Operation
- INTRODUCTION
- COMPLIANCE STATEMENT FOR EUROPEAN USERS
- GS MARK STATEMENT
- FCC COMPLIANCE STATEMENT FOR AMERICAN USERS
- EMI COMPLIANCE STATEMENT FOR CANADIAN USERS
- ETAT DE CONFORMITE EMI A L USAGE DES UTILISATEURS CANADIENS
- IMPORTANT SAFETY INSTRUCTIONS
- NOTICE
- SAFETY INSTRUCTIONS
Setup
- Confirmation of Carton Contents
  - Removing the Packing Material
- Part Names and Functions
  - Front View
  - Inside the printer1
  - Inside the printer2
  - Inside the printer3
  - Operation Panel
  - Rear View
- Connection to Power
- Driver Installation
- Connection to a Computer
Printer Operation
- Power ON/OFF
  - Turning on the power
  - Turning off the power
- Normal Operating Mode
  - LED Functions
- Setting the Media
  - Media Sizes
  - Installing the Media
- Setting the Ribbon
  - Setting method
- Mode Settings
  - HEX Dump Mode
  - Self Print Mode
  - Menu Setting Mode
  - Menu Setting Flow Chart (1/2)
  - Menu Setting Flow Chart (2/2)
  - Example of printing (1/2)
  - Example of printing (2/2)
  - Menu Setting Table (1/6)
  - Menu Setting Table (2/6)
  - Menu Setting Table (3/6)
  - Menu Setting Table (4/6)
  - Menu Setting Table (5/6)
  - Menu Setting Table (6/6)
- Setting the print method
- Selecting the Ribbon Winding Direction
- Emulation Auto Detect: Cross-Emulation(TM)
- Manually Selecting the Printer Emulation
Printer Adjustments
- Sensor Adjustments
  - Entering Sensor Adjustment Mode
  - Sensor Selection Method
  - Adjusting the Transparent Type Sensor
  - Adjusting the Reflective Type Sensor
- Media Thickness Adjustment
- Media Width Adjustment
- Adjusting the Ribbon
  - Ribbon Tension Adjustment
  - Ribbon Balance Adjustment
- Cleaning
Troubleshooting
- 1/2
- 2/2
Appendixes
- Specifications
  - 1/3
  - 2/3
  - 3/3
- Interfaces
  - Serial Interface
  - USB Interface
  - Parallel Interface (Option)

Citizen CL-S621 User's Manual

Pages 66

Year 2010

Language(s)

of 66

Citizen CL-S621 Printer Specification

The Citizen CL-S621 Printer is a versatile and robust thermal transfer and direct thermal barcode printer, designed to meet the demands of diverse printing environments. It features a print resolution of 203 dpi, ensuring high-quality label outputs. The printer boasts a print speed of up to 4 inches per second and can accommodate media up to 5 inches in width, making it suitable for a wide range of labeling applications. Its print length extends to a maximum of 49 inches, providing flexibility for various labeling needs.

The CL-S621 is equipped with a powerful 32-bit RISC processor and 16 MB of SDRAM, facilitating efficient data processing and swift print operations. It includes 4 MB of Flash ROM, expandable via a memory slot, allowing for storage of fonts, graphics, and label formats. Connectivity options include parallel, serial, and USB interfaces, with an optional Ethernet interface for network integration, ensuring seamless connectivity across different platforms.

This printer supports Citizen’s Hi-Lift mechanism, which simplifies media loading and ribbon changes, enhancing user convenience. The adjustable media sensor accommodates various media types, including continuous, die-cut, and black mark labels. The CL-S621 is compatible with several programming languages, including Zebra ZPL-II, Datamax DMX, and Citizen's own, facilitating integration with existing systems.

Built with a durable metal chassis, the printer is designed for longevity and reliability in demanding environments. It features an intuitive LCD control panel, providing easy access to printer settings and diagnostics. The Citizen CL-S621 is a reliable choice for businesses requiring a balance of performance, connectivity, and ease of use in their barcode printing operations.

Citizen CL-S621 Printer F.A.Q.

How do I load media in the Citizen CL-S621 printer?

To load media, open the printer cover, place the media roll on the media holder, and thread the media through the printhead. Ensure the media is aligned properly and close the cover.

How can I calibrate the sensor on the CL-S621 printer?

Press and hold the FEED button while turning on the printer until the LED blinks. Release the button to start the calibration process, which automatically adjusts the sensor.

What should I do if the printer is not feeding labels correctly?

Check if the media is loaded correctly and ensure the media sensor is clean. Also, verify that the media settings in the software match the actual media being used.

How do I perform a self-test on the Citizen CL-S621 printer?

Turn off the printer, then press and hold the FEED button while turning the printer back on. Release the button after the printer starts printing the self-test page.

What are the steps to clean the print head of the CL-S621 printer?

Turn off the printer and open the cover. Use a lint-free cloth moistened with isopropyl alcohol to gently clean the print head. Allow it to dry completely before closing the cover and turning on the printer.

How can I change the print darkness setting on the CL-S621?

Access the printer settings through the control panel or printer driver. Adjust the darkness setting to achieve the desired print quality.

What should I do if the printer is showing a ribbon error?

Check if the ribbon is loaded correctly and not tangled. Ensure the ribbon sensor is clean and functioning. Replace the ribbon if it is damaged or empty.

How do I connect the Citizen CL-S621 to a computer via USB?

Connect the printer to the computer using a USB cable. Install the necessary drivers from the Citizen website or included CD, then follow the on-screen instructions to complete the setup.

What maintenance is required for the Citizen CL-S621 printer?

Regular maintenance includes cleaning the print head, platen roller, and sensors. Check for firmware updates and inspect the printer for any signs of wear or damage.

How can I resolve the issue of blank labels being printed?

Ensure the ribbon is correctly installed and not empty. Check the print settings and media sensor alignment. Perform a self-test to diagnose any hardware issues.