HP LaserJet M476dw Pro Color MFP
Troubleshooting. Solve problems checklist
Basic problem solving
| Problem | Cause | Solution |
|---|---|---|
| When the product is connected to a correctly grounded power source, the control panel does not illuminate and the main motor does not rotate. | No power to the product. | 1. Verify that the power switch is turned on. 2. Verify that the power cable is correctly connected to the outlet and the product. 3. Verify that the power outlet has the correct voltage. |
| The product has an internal power failure. | Check the internal cable connections for loose connections. | |
| The formatter is defective. | Replace the formatter. | |
| The Low Voltage Power Supply is defective. | Replace the Low Voltage Power Supply. | |
| The High Voltage Power Supply is defective. | Replace the High Voltage Power Supply. | |
| The engine controller PCA is defective. | Replace the engine controller PCA. | |
| When turned on, the control panel illuminates, but the main motor does not rotate. | The toner-cartridge door is open. | Close the toner-cartridge door. |
| A page is jammed in the paper path. | Clear all paper from the paper path, and make sure that all sensors are working correctly. | |
| The cable is not connected correctly. | Reconnect the motor cable. | |
| The motor is not mounted correctly in the product chassis. | Verify that the motor is connected correctly and that it rotates freely. | |
| The engine controller PCA is defective. | Replace the engine controller PCA. | |
| The feed motor is defective. | Replace the motor. | |
| The product turns on and the motor rotates, but the control-panel lights do not illuminate. | The control panel is disconnected, or the connection is not secure. | Verify that the control panel USB cable is connected to the formatter. |
| The product firmware is out of date or corrupted. | Update the product firmware. | |
| The control panel is defective | Replace the control panel. | |
| The formatter is defective. | Replace the formatter. | |
| The product is on, but the control-panel indicates that the product is not in the "ready" state. | The product has an internal error that was detected during the Power-On Self-Test sequence. | Consult the list of control-panel messages to identify and correct the error |
| The product prints the engine test and the Demo page, but does not print jobs from a computer. | The network or USB cable is not connected correctly. | Reconnect the cable. TIP:Try using a new USB cable that is 3 m (10 ft) or less in length. |
| An incorrect driver is selected. | Select the correct print driver. | |
| The print driver is not installed correctly. | Remove and then reinstall the product software. Make sure that you use the correct procedure and port setting. | |
| Other devices are connected to the product (for example, through a switch or hub) that are interfering with the computer-product communications. | Disconnect the other devices, switches, or hubs. | |
| There is a computer-port communications problem. | Reset the computer port settings (see the computer user guide for more information). | |
| The formatter is defective. | Replace the formatter. |