Brother DCP-L3510CDW
Troubleshooting . Fuser Unit, LED ASSY, PCB Problems
Fuser Unit Problems
Fuser unit failure
| Step | Cause | Remedy |
|---|---|---|
| 1 | Connection failure of the center thermistor harness | Reconnect the center thermistor harness. |
| 2 | Connection failure of the side thermistor harness | Reconnect the side thermistor harness. |
| 3 | Connection failure of the heater harness | Reconnect the heater harness. |
| 4 | Connection failure of the eject sensor harness | Reconnect the eject sensor harness. |
| 5 | Eject sensor PCB failure | Replace the eject sensor PCB. |
| 6 | Low-voltage power supply PCB failure | Replace the low-voltage power supply PCB. |
| 7 | Fuser unit failure | Replace the fuser unit. |
| 8 | Main PCB failure | Replace the main PCB. |
Note:
- Turn the power switch OFF and then ON again. Leave the machine for 15 minutes. This problem may then be cleared.
- The machine may recover from the error, when the test printing of the maintenance mode for service personnel is started. However, conducting this operation while the heater has not yet cooled may cause the fuser unit to melt. Be careful.
Troubleshooting for LED ASSY Problems
LED ASSY failure
User Check
• Turn ON the power switch, then open the top cover and the back cover. Leave the machine for a while to remove condensation.
| Step | Cause | Remedy |
|---|---|---|
| 1 | LED ASSY attachment failure | Reattach an LED ASSY. |
| 2 | Connection failure of the LED ASSY flat cable | Reconnect an LED ASSY flat cable. |
| 3 | Connection failure of the LED control flat cable | Reconnect the LED control flat cable. |
| 4 | LED ASSY flat cable failure | Replace an LED ASSY flat cable. |
| 5 | LED control flat cable failure | Replace the LED control flat cable. |
| 6 | LED control PCB failure | Replace the LED control PCB. |
| 7 | LED ASSY failure | Replace an LED ASSY. |
| 8 | Main PCB failure | Replace the main PCB. |
Troubleshooting for PCB Problems
Main PCB failure
User Check
• Turn the power switch OFF and then back ON again.
• Install the latest main firmware.
• Check the print limit ID.
• Check that the print data is not damaged.
| Step | Cause | Remedy |
|---|---|---|
| 1 | Main PCB failure | Replace the main PCB. |
Full memory
User Check
• Print the accumulated data.
• Reduce the amount or resolution of the data.
| Step | Cause | Remedy |
|---|---|---|
| 1 | Main PCB failure | Replace the main PCB. |