K60 Series｜Multi-Output Power Module
Inspection and Replacement Guide
Applicable Model: LINKO K60 Series DTF Printer
1. Overall Power Modules Function
The printer uses multiple power modules to supply different systems.
The Multi-Output Power Module is the main power unit of the printer.
It provides DC outputs of 24V and 42V for the following components:
- Multiple DC outputs: 24V / 42V
- Mainboard
- Carriage Board (24V / 42V)
- Temperature Control Board
- High-Voltage Board (Channel 2)
1.1 Other Independent Power Modules (Not Covered in This Guide)
The following power modules are independent units and are not included in this document:
- 24V Power Module: White ink circulation pump and white ink stirring motor
- 36V Power Module: X-axis motor and Y-axis driver
Note: This guide applies only to the Multi-Output Power Module.
For 24V and 36V power modules, please refer to the corresponding documents.
2. Multi-Output Power Module Wiring Diagram
| Category | No. | Voltage / Wire Color | Description |
|---|---|---|---|
| AC Input | ① | AC 200–240VN (Blue) / L (Red) | External AC power input |
| DC Output | ② | DC 24V | Output to High-Voltage Board (Channel 2) |
| DC Output | ③ | DC 24V | Output to Temperature Control Board |
| DC Output | ④ | DC 42V | Output to Carriage Board |
| DC Output | ⑤ | DC 24V | Output to Mainboard |
| DC Output | ⑥ | DC 24V | Output to Carriage Board |
| Ground | ⑦ | GND | Protective grounding |
3.1 Safety Warnings
- Perform voltage measurements with the device powered ON.
- Fully disconnect the power before replacing the power module.
- Wear insulated gloves to avoid contact with exposed circuits.
3.2 External AC Input Check (AC Input, Test Point ①)
Multimeter Mode: ACV 600V
Measurement Method:
- Black probe → AC-N1 (Neutral)
- Red probe → AC-L1 (Live)
Normal Value: AC 200–240V
If normal, proceed to DC output inspection.
If 0V or unstable, this is not a power module fault. Check:
- Power cable connection
- Main power switch
- Emergency stop switch
- Power outlet
- AC cable and terminals
(See Figure 3.2)
3.3 DC Output Inspection and Result Evaluation (DC Outputs ②–⑥)
This step checks whether the DC output of the Multi-Output Power Module is normal.
Multimeter Mode: DCV 200V
3.3.1 DC Output Measurement Points (Measure in Order)
Measure the DC outputs in the following order:
- ② High-Voltage Board output (24V)
- ③ Temperature Control Board output (24V)
- ⑥ Carriage Board output (24V)
- ⑤ Mainboard output (24V)
- ④ Carriage Board output (42V)
(See Figure 3.3.1-1 to Figure 3.3.1-5)
3.3.2 Normal Voltage Range
- 24V circuits(②③⑤⑥): 22–25V(±10%)(See Figure 3.3.2-1)
- 42V circuits(④): 40–44V(±10%)(See Figure 3.3.2-2)
3.3.3 Evaluation and Actions
| Measurement Result | Status | Action |
|---|---|---|
| All DC outputs within the normal range | ✅ Power module normal | No replacement required |
| DC outputs normal, but component does not work | ✅ Power module normal | Proceed to Section 3.4 |
| Any DC output is 0V or low | ❌ Power module fault | Replace the Multi-Output Power Module |
⚠ Important
Only proceed to Section 3.4 after confirming that all DC outputs are normal.
If any DC output is abnormal, do not continue checking components.
3.4 Component Input Voltage Inspection
(Only After Power Module Is Confirmed Normal)
This step is used to determine whether power is delivered to the component
or whether the component itself is faulty.
3.4.1 Inspection Targets
- High-Voltage Board input (24V) (See Figure 3.4.1-1)
- Temperature Control Board input (24V) (See Figure 3.4.1-2)
- Carriage Board input (24V ) (See Figure 3.4.1-3)
- Carriage Board input (42V) (See Figure 3.4.1-4)
- Mainboard input (24V) (See Figure 3.4.1-5)
3.4.2 Multimeter Measurement Method
- Mode: DCV
- Black probe: GND
- Red probe: Component power input
- Measurement condition: Device powered ON
3.4.3 Evaluation and Actions
| Input Voltage Status | Status | Action |
|---|---|---|
| Voltage normal, component works | Normal | No action required |
| 0V or near 0V Voltage low or unstable | Power not delivered | Check cables and connectors. If normal, replace the cable |
| Voltage normal, but component does not work | Component fault | Replace the component |
4.2 Remove the Old Power Module
⚠ Important
Before removing the power module, take photos of the current wiring layout to ensure correct reconnection.
4.2.1 Remove the housing screws and record the grounding wire routing.
4.2.2 Disconnect cables ①–⑥ in order,
remove the fixing screws, and take out the power module.
(See Figure 4.2.2-1/ Figure 4.2.2-2)
4.3 Install the New Power Module
- Confirm the model matches the original
- Fix the power module and tighten screws (See Figure 4.3-1)
- Reconnect all cables according to the photos (See Figure 4.3-2)
- Reinstall the housing and confirm grounding (See Figure 4.3-3)
