Installing a UHF RFID kit in the CLNX Plus printer

Learn how to install a UHF RFID kit in your CL4NX Plus / CL6NX printer with this step-by-step guide.

Step 1: Open the top cover and print head

1. Open the top cover (1).
2. Open the print head (2).

Caution: Open the top cover fully to prevent accidental drop of the cover.

Step 2: Remove the front covers

1. Remove two screws (3).
2. Slide in the arrow direction to remove the front covers (4) and (5).

Step 3: Remove the left housing cover

1. Remove the screw (6).
2. Slide and lift in the arrow direction to remove the left housing cover (7).

Caution: Avoid touching or deforming PCB components while removing the left housing cover.

Step 4: Remove the media sensor guide

1. Tilt down the sensor guide lock (8) in front.
2. Pull out the media sensor guide (9).

Step 5: Remove the sensor tension and sensor case

1. Remove the screw (26).
2. Remove the sensor tension (27).
3. Remove the sensor case (28).

Step 6: Disassemble the sensor case

1. Disconnect the cables and remove the internal components of the sensor case (28).

Step 7: Remove the platen roller

1. Carefully remove the platen roller to access the media path components.

Step 8: Remove the media guard

1. Remove the screws (13). For CL4NX Plus, remove two screws (13) and the media guard (14). For CL6NX Plus, remove three screws (13) and the media guard (14).
2. Push the sensor holder all the way in and remove the media guard (14).
3. Lift the front of the media guard to remove it.

Step 9: Pass the relay cable

1. Pass the relay cable through the hole in the frame and connect it to the media guard (RFID) (16).
2. Pass the other side of the relay cable through the marked part.

Step 10: Install the RFID media guard

1. Align the hole in the media guard (16) with the projection on the frame.
2. Slide the media guard (16) from the back to the front to attach it.

Step 11: Pass the antenna cable

1. Pass the antenna cable (15) from the media guard (RFID) (16) through the hole in the frame.

Step 12: Route the relay cable

1. Pass the relay cable through the hole in the frame and pull it out.

Step 13: Secure the RFID media guard

1. Use the attached screws (13) to secure the RFID media guard (16).

Step 14: Reinstall the platen roller

1. Insert and secure the platen roller.

Step 15: Attach the RFID sensor case

1. Insert the sensor case (RFID) along the groove of the RFID media guard.
2. Secure it with screws.

Step 16: Install the RFID media sensor guide

1. Insert the RFID media sensor guide into the sensor case.

Step 17: Remove the print head

1. Peel off the serial label on the print head and save it for reference.

Step 18: Attach the UHF antenna assembly

CL4NX Plus:

1. Remove two screws (19) and remove the head cover (20) from the print head (11).
   
2. Attach the UHF (small pitch) antenna assembly to the RFID head cover (20) as shown.
3. Insert the front of the UHF antenna assembly through the rectangular opening in the RFID head cover.
4. Thread the antenna cable accordingly.

CL6NX Plus:

1. Remove the screw (7) and rivets (7) to remove the head cover (8) from the print head (9).
   
2. Attach the UHF (small pitch) antenna assembly to the RFID head cover (8) as shown.
3. Insert the front of the UHF antenna assembly through the rectangular opening in the RFID head cover.
4. Thread the antenna cable accordingly.

Step 19: Secure the RFID head cover

CL4NX Plus:

1. Use the screws (print head) (19) removed in Step 18 to attach the RFID head cover (21).
2. Align the end of the RFID head cover (21) with the side surface of the print head (11) and screw it in place.
3. The print head assembly is now referred to as the RFID head assembly (22).

CL6NX Plus:

1. Use the screw and two rivets (7) removed in Step 18 to attach the RFID head cover (6).
2. Align the end of the RFID head cover (6) with the side surface of the print head (9) and fix them with the screw and rivets (7).
3. Use the rivets attached to the RFID head cover (6).
4. The print head assembly is now referred to as the RFID head assembly (10).

Step 20: Remove and reinstall the gearbox assembly

1. Remove five screws (23) that secure the gearbox assembly (24).
   
2. Thread the antenna cable of the RFID head assembly (22) through the hole in the frame behind the print head cable.
3. Pull out the antenna cable from the board side.
4. Connect the print head cable to two connectors (12) of the RFID head assembly (22).
5. Install the RFID head assembly (22), ensuring the print head locks into place with a click.
   
6. Attach the mini clamp (25) to the center frame and pass the antenna cable through it.
   
7. Reinstall the gearbox assembly (24) using the five screws (23) removed earlier.
8. Pass two antenna cables under the gearbox assembly.

Step 21: Attach the EXT PCB

1. Attach the EXT PCB (29) and tighten four screws (30).

Step 22: Connect the EXT cables

1. Connect the EXT signal cable (31) from the EXT PCB (29) to the main (CONT) PCB.
2. Connect the EXT power cable (32) from the EXT PCB (29) to the power supply unit.

Step 23: Install the RFID PCB assembly

1. Attach the RFID PCB assembly (33) to the gearbox assembly using three screws (34).

Step 24: Connect all RFID cables

1. Connect the relay cable to the PCB as shown in the figure.
   
2. Pass the relay cable through the back of the PCB and fix it with the omega lock.
   
3. Connect the following cables to the RFID PCB and EXT PCB:
   • EXT power cable
   • RFID signal cable
   • EXT signal cable
   • SRA driver cable
   • Antenna cable

Step 25: Reattach the front covers

1. Attach the front covers (5) and (4) using two screws (3).
2. Slide the front covers (4) and (5) in the arrow direction to secure them.

Step 26: Reattach the left housing cover

1. Attach the left housing cover (7).
2. Tighten the screw (6).

Step 27: Apply the RFID stickers

1. Attach the RFID stickers (36) to the designated positions on the printer, as shown in the figure.
2. Attach the patent label (37) to the left cover, as shown in the figure.

RFID module automatic detection

When the RFID kit is installed, the printer automatically enables the RFID function upon startup.

• If the RFID kit is installed, [RFID] appears in the [Interface] menu of Settings mode.
• If the RFID kit is removed, the [RFID] option disappears from the menu.

Troubleshooting:

• If the buzzer sounds six times when the printer is powered on, the RFID module is detected but cannot communicate.
• If an “RFID System Error” occurs, check all connections and restart the printer.
• If the printer receives RFID commands but the module is not installed, a command error or NAK response will be returned.