White Ink Tank Replacement Guide

(Including Stirring Motor and Stirring Bracket)

Applicable Model: LINKO K605B DTF Printer

1. Fault Symptoms and Quick Check

If any of the following symptoms occur, replace the white ink tank.

No.	Fault Symptom	Quick Check
1	Ink settling, poor stirring, or the stirring motor not running / running abnormally	Check if the white ink is clearly separated or settled. Briefly start the stirring function and check if the motor runs normally.
2	White ink tank cracked, leaking, or slow leaking	Check for visible cracks, deformation, or ink leakage on the tank body or connectors.

If any of the above symptoms are confirmed, proceed to Section 2 for replacement.

Detailed Inspection Reference (Optional)

Visual Inspection
Check if the white ink is clearly separated or has hard sediment.
Check the white ink tank body for cracks or deformation.
Check the connectors and the bottom of the tank for ink seepage or leakage.
Operational Check
Power on the printer and briefly start the stirring function.
Check if the stirring motor starts and runs smoothly.
Check for abnormal noise or vibration.
Electrical Inspection (Optional)
Power off the printer.
Use a multimeter to check the power supply and control signal of the stirring motor.
Check if any connectors or wire ends are loose.

(The multimeter measurement method for the white ink circulation pump is described in Section 4.)

2. Replacement Procedure

2.1 Preparation Before Replacement

Before replacing the white ink tank, complete the following steps to ensure safe operation.
Preparation Checklist:
① The printer is stopped using the emergency stop switch
② The power supply is disconnected
③ The white ink path is fully closed
④ The installation status of the white ink tank has been recorded

Start disassembly only after all 4 conditions above are confirmed.

2.1.1 Press Emergency Stop Switch

Press the emergency stop switch to stop the printer immediately.
(See Figure 2.1.1)

2.1.2 Disconnect Power Supply

Turn off the main power and unplug the power cable.
This may damage the printer if skipped.
(See Figure 2.1.2-1 / 2.1.2-2)

2.1.3 Close White Ink Path

Close the following parts in order:

White ink tank shut-off valve
Filter ink tube clamp
Ink distribution tube clamp

✅ Confirmation:
Ink should stop flowing in the tubes.
Gently press the tube to confirm there is no ink backflow.
(See Figure 2.1.3-1)

2.1.4 Record Installation Status

Take photos of the white ink tank installation for reference during reinstallation.
(See Figure 2.1.4)

2.2 Remove the Old White Ink Tank

2.2.1 Disconnect Cables

Disconnect the white ink stirring motor cable and the ink shortage sensor cable in sequence.
⚠️ Note:
Press the connector latch first, then pull out the connector.
Do not pull the cable directly. (See Figure 2.2.1-1/2.2.1-2）

2.2.2 Disconnect Ink Tubes

Disconnect the white ink outlet tube and the ink distribution tube.
Wrap the tube ends with a lint-free cloth and secure them with cable ties.
This prevents dripping and air entering. (See Figure 2.2.2-1/2.2.2-2)

2.2.3 Remove the Old White Ink Tank

Keep the tank upright and remove it slowly.
Do not tilt the tank to avoid ink spillage. (See Figure 2.2.3)

2.3 Install the New White Ink Tank

2.3.1 Model Confirmation

Confirm that the new white ink tank matches the original model.

2.3.2 Install the Tank Body

Align the tank with the mounting position.
Place it into the bracket and make sure it is fully seated.

2.3.3 Connect Ink Tubes

Insert the white ink outlet tube and the ink distribution tube into the correct ports.
Push the tubes fully in to prevent air intake or leakage. (See Figure 2.3.3-1/2.3.3-2)

2.3.4 Connect Cables

Reconnect the stirring motor cable and the ink shortage sensor cable.
Make sure all connectors are fully inserted. (See Figure 2.3.4-1/2.3.4-2)

3. Power-On Inspection

3.1 Check all cables and ink tubes.

Make sure no connections are loose, incorrect, or reversed.

3.2 Open the following parts in order:

White ink tank shut-off valve
Filter ink tube clamp
Ink distribution tube clamp
(See Figure 3.2-1)

3.3 Plug in the power cable and turn on the main power switch.
(See Figure 2.1.2-2)

3.4 Release the emergency stop switch by turning it clockwise.
The printer power will be restored.
(See Figure 3.4)

3.5 Installation Confirmation

Start the white ink stirring function and observe the operation.
✅ Normal Condition:

Stirring motor runs smoothly
No abnormal noise
No ink leakage

❌ Abnormal Condition:

Motor does not run, vibrates, or makes abnormal noise
Ink leakage at tube connections

If any abnormal condition occurs, power off the printer and check the following in order:

Check if cables are fully inserted and correctly connected
Check if ink tubes are fully inserted
Check if the white ink path is fully open

If the stirring function runs normally and no leakage or alarm appears, the replacement is complete.
The printer can now proceed to normal printing preparation.

4. Pump/Stirring Motor Input Voltage Inspection Steps

4.1 Set the multimeter to the DC voltage range.（See Figure 4.1）

4.2 Use the multimeter probes to measure the voltage at the positive (+) and negative (–) terminals of the white ink circulation pump / stirring motor input.（See Figure 4.2）

4.3 Record the measurement results and refer to the table below to determine the cause of the fault.

Input Voltage	Judgment	Action
0.0V	Voltage not delivered to pump/stirring motor → wiring broken / terminal oxidation	Check or replace wiring
22–25V (±10%) but pump/motor not working	Pump or stirring motor failure	Replace circulation pump or stirring motor

Note:
If the voltage is normal but the motor does not operate, do not repeatedly power on for testing. Replace the corresponding component directly.

Technical Support
Email: support@dtflinko.com
Website: www.dtflinko.com