1. Display Screen Not Turning On / Black Screen

• Possible Causes

  • Power supply or fuse failure

  • Loose connectors or wiring issues

  • Faulty display screen

• Remedies

  • Check fuse and power voltage

  • Inspect connectors and wiring → clean or reconnect

  • Replace the display module

2. Display Screen Flickering or Unstable Brightness

• Possible Causes

  • Power voltage fluctuation

  • Aging of display backlight module

  • Connector oxidation or poor contact

• Remedies

  • Measure power voltage to ensure stability

  • Inspect backlight module → repair or replace

  • Clean connectors to ensure good contact

3. Incorrect Information or Error Codes on Screen

• Possible Causes

  • Sensor signal abnormalities (oil temperature, oil pressure, water temperature, etc.)

  • ECM/controller communication errors

  • Software or firmware issues in display screen

• Remedies

  • Check related sensors → repair or replace faulty sensors

  • Inspect CAN bus or communication wiring → repair if needed

  • Upgrade display firmware or ECM software

4. Touch / Button Unresponsive (for Touchscreen Displays)

• Possible Causes

  • Touchscreen damaged or dirty

  • Cable or control board fault

• Remedies

  • Clean the screen and test touch functionality

  • Check touchscreen ribbon cable and control board → replace faulty parts

5. Display Screen Shows Garbled Text or Abnormal Image

• Possible Causes

  • Software conflict or corrupted firmware

  • Signal cable interference or damage

• Remedies

  • Restart system or ECM

  • Inspect signal cables, replace if necessary

  • Upgrade display firmware

Maintenance and Prevention

1. Keep the display screen clean, avoid dust or hydraulic oil contamination.

2. Regularly check power supply and fuses to prevent voltage-related damage.

3. Inspect connectors and wiring for looseness, oxidation, or damage.

4. Perform software updates and backups, ensure display screen and ECM versions match.

5. Handle screen carefully, avoid pressing too hard on buttons or touchscreen.