Troubleshooting

 

problem as explained as follows.

 

In each case, make sure that you power OFF the printer before

WARNING

 

attempting any procedures to resolve the problem.

 

 

Printhead Cleaner Path

1Open the right door of the printer and check for any visible obstacles restricting the movement of the Service Station. Manually move the Service Station, checking for smooth and free movement.

Paper Path

1Open the Window and check for any visible obstacles restricting the movement of the Drive Roller. If there is a wrinkled mass of media inside the paper path, lift the Pinch wheels (using the Media Load

Handles) and clear the obstruction. If you cannot reach the media, remove the Electronics Module (⇒ Page 8-25) and the Roller Guide (⇒ Page 8-66) from the Rear of the Printer to gain better access.

2If this shutdown happens at the end of a Roll of Media, it could be because the media is stuck firmly to the Roll. Lift the Pinch wheels (using the Media Load Handles) and pull the media clear.

3Replace media spindle if broken.

4Replace the Paper-Axis Motor ⇒ Page 8-12.

Printhead Path

When a shutdown occurs in the Printhead path, you will get the message "Switch Power Off / Check Printhead Path (*). The (*) will be a number, which will give an indication on where the failure occurred:

PWM Shutdown (1) and Energy Shutdown (3)

1Clean Slider Rods and Apply Oil along the complete axis of the Slider Rods. After applying the Oil, perform the Scan-Axis Test ⇒ Page 4-17and check that the values are within the given limits.

2Replace the Scan-Axis Motor ⇒ Page 8-33.

Velocity Shutdown (2)

1Open the Window and check for any visible obstacles restricting the movement of the Carriage Assembly. Try and move the Carriage Assembly manually, checking for smooth and free movement.

2Check that the Encoder Strip is clean. If necessary, clean Encoder Strip using a damp cloth.

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HP DesignJets 1050C and 1055CM Printers Service Manual