The Doosan/Develon DX140LC-5 instrument cluster uses a color-coded LCD display to alert operators to machine status and faults. Understanding these symbols is key to safe and efficient operation of this specific excavator model.
Doosan/Develon DX140LC-5 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | This red stop light appears alongside a critical system failure, such as low engine oil pressure or coolant overheat, requiring immediate engine shutdown. | Stop the engine immediately and consult the fault code on the display. | |
| Master Caution | AMBER | Amber caution light indicates a non-critical system issue, like a clogged air filter or low hydraulic oil level, that needs attention soon. | Check the message display and address the indicated problem at your earliest convenience. | |
| Check Engine (MIL) | AMBER | This light illuminates when the engine ECU detects an emissions-related fault, such as a sensor failure or fuel system issue specific to the DX140LC-5's Doosan engine. | Have the engine diagnosed by a certified Doosan technician as soon as possible. | |
| Engine Oil Pressure | RED | Red oil pressure warning indicates dangerously low engine oil pressure, often due to low oil level or a failed pump on the DX140LC-5. | Stop the engine immediately and check oil level; do not restart until issue is resolved. | |
| Battery / Charging | RED | Red battery light signals the alternator is not charging the battery, possibly due to a broken belt or alternator failure on the DX140LC-5. | Check alternator belt tension and charging system; repair before continuing work. | |
| Coolant Temperature | RED | Red coolant temperature light warns of engine overheating, which can be caused by low coolant, a faulty thermostat, or a blocked radiator on the DX140LC-5. | Stop the engine and allow it to cool; check coolant level and radiator cleanliness. | |
| Glow Plug / Preheat | AMBER | Amber glow plug light appears when the intake air preheating is active during cold starts; it should turn off within seconds on the DX140LC-5. | Wait for the light to turn off before starting the engine. | |
| Low Fuel | AMBER | Amber low fuel light indicates the fuel level is approaching empty; the DX140LC-5 has a 300-liter tank, so plan refueling soon. | Refuel as soon as possible to avoid air entering the fuel system. | |
| Seat Belt | RED | Red seat belt reminder flashes when the operator is not buckled in; the DX140LC-5 requires the seat belt to be fastened for safe operation. | Fasten your seat belt immediately. | |
| High Beam | BLUE | Blue high beam indicator shows when the headlights are on high beam, providing maximum visibility in dark conditions on the DX140LC-5. | No action needed; use low beam when other vehicles are near. | |
| Work Lights | GREEN | Green work light indicator confirms the auxiliary work lights are turned on, improving visibility around the excavator's work area. | Turn off when not needed to save battery. | |
| Beacon / Rotating Light | GREEN | Green beacon light indicates the rotating warning light on top of the cab is active, alerting nearby personnel of machine movement. | Ensure beacon is on when operating in areas with pedestrian traffic. | |
| Swing / Slew Lock | AMBER | Amber swing lock light illuminates when the upper structure is locked, preventing rotation during transport or maintenance on the DX140LC-5. | Release the swing lock before operating. | |
| Hydraulic Oil Temperature | RED | Red hydraulic oil temperature warning indicates the hydraulic fluid is too hot, often due to heavy use or low oil level in the DX140LC-5. | Stop machine and allow hydraulics to cool; check oil level and cleanliness. | |
| Air Filter Restriction | AMBER | Amber air filter light signals a clogged engine air filter, reducing power and fuel efficiency on the DX140LC-5. | Inspect and replace the air filter element as per maintenance schedule. | |
| Service / Hour Meter | AMBER | Amber service light reminds that scheduled maintenance is due based on engine hours; the DX140LC-5 requires oil changes every 500 hours. | Perform the required service as indicated in the operator's manual. |
16 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheat
Common causes
- Low coolant level
- Blocked radiator fins
- Faulty thermostat
What to do
On the DX140LC-5, stop the engine immediately and allow it to cool. Check coolant level and inspect the radiator for debris. If the problem persists, have the cooling system serviced by a Doosan dealer.
Hydraulic System Overheat
Common causes
- Low hydraulic oil level
- Contaminated oil
- Excessive load
What to do
Reduce the load and allow the hydraulics to cool. Check hydraulic oil level and condition; replace if necessary. Ensure the cooling fan is functioning properly.
Low Engine Oil Pressure
Common causes
- Low oil level
- Oil pump failure
- Clogged oil filter
What to do
Stop the engine immediately. Check oil level and top up if low. If the light remains, do not restart; call for service to inspect the oil pump and filter.
Electrical Charging Failure
Common causes
- Broken alternator belt
- Faulty alternator
- Battery connection issue
What to do
Check the alternator belt tension and condition. Inspect battery terminals for corrosion. If the light stays on, the alternator may need replacement by a qualified technician.
Frequently Asked Questions
Why does the Master Warning light come on and shut down my DX140LC-5?
The Master Warning indicates a critical fault, such as low oil pressure or high coolant temperature. The machine shuts down to prevent engine damage. Check the display for the specific fault code and address it before restarting.
Can I continue working with the amber hydraulic oil temperature light on?
No, you should stop and let the hydraulics cool. Continuous operation can damage seals and reduce performance. Check the oil level and radiator fan function.
How often should I service the air filter on the DX140LC-5?
The air filter should be inspected every 250 hours and replaced when the restriction indicator light illuminates or every 1000 hours, whichever comes first.
What does the glow plug light mean in cold weather?
The glow plug light indicates the intake air preheating is active. Wait until it turns off (usually a few seconds) before starting the engine in cold conditions.
My swing lock light stays on even after releasing the lever—what should I do?
If the swing lock light remains on after releasing, the lock may be stuck or the sensor faulty. Check the manual release under the cab; if still stuck, contact service.
Why does the battery light flicker intermittently?
A flickering battery light often indicates a loose or corroded battery connection, or a slipping alternator belt. Inspect and tighten connections, and check belt tension.