PUMP PID excess load error (error code: 000851)

Cause
  • State in which load of Supply Pump Motor0 exceeds expected load
  • When rotated in the opposite direction to rotation direction
    (There was a sudden load error, and the motor rotated in the opposite direction in reaction to it)
  • State in which load of motor exceeds expected load, and motor does not rotate at all
  • Initial operation of the Ink Supply Unit cannot be performed normally due to improper assembling of failure of the unit, etc.
Suspected cause
  • Motor failure (Harness disconnected)
  • Motor driver failure/main board failure
  • Encoder failure (Harness disconnected)
  • Faulty assembly or failure of Ink Supply Unit
  • Damage to select cam shaft
Troubleshooting

Step

Check and measure

Yes

No
Advance check 1

Checking the Ink Supply Unit Part 1
Check that the motor cable is properly connected.

Go to advance check 2

Reconnect the motor cable.
Advance check 2

Checking the Ink Supply Unit Part 2
Check that there are no foreign objects in the Ink Supply Unit.

 Go to advance check 3

Remove the foreign object.
Advance check 3

Checking the Ink Supply Unit Part 3
Check that the gears in the Ink Supply Unit are not damaged.

 Go to step 2

Replace the Ink Supply Unit.
2

Checking operation of the Ink Supply Unit
The Ink Supply Unit is confirmed to be normal by the Failure Verification “3020108 Ink Supply Pump 0”.

 If the error occurred, replace the Main Board Assy.
(If the problem persists, contact Epson local service representatives)

Replace the Ink Supply Unit and run the Failure Verification “3020108 Ink Supply Pump 0” again.