HP CH336A#B1K Manual do Utilizador descarregar pdf (Página 27)

Troubleshooting

1-17

HP DesignJets 500, 510 and 800 Series Printers Service Manual

How to Detect Problems Related to the Encoder Disk

The following information will help you detect any problems

related to the Encoder Disk:

 Horizontal and periodic white lines, all of them with the same

width depending on the failure mode. This is a clear indication

that the Encoder Disk is damaged.

 System Error 56:10 - This means that you have to replace the

Drive Roller Encoder Sensor ⇒ Page 8-38. But, if the problem

persists, replace the Encoder Disk Assembly.

 System Error 81:01 - This means a Paper-Axis shutdown. If this

error code appeared but was NOT caused by a paper jam, then

perform the Paper Advance Test

⇒

Page

4-11

. If the Paper

Advance Test fails during the third test, the Front Panel will

display the following message:

In this case, you should replace the Drive Roller Encoder Sensor ⇒

Page 8-38. But, if the problem persists, replace the Encoder Disk

Assembly.

NOTE In order to remove the Encoder Disk, you must first remove the Drive

Roller

⇒ Page 8-86.

Be very careful when assembling the Axle Spring because you could

damage the Encoder Disk.

Check that no air bubbles are trapped between the Encoder Disk and the

hub once it is installed.

Encoder Disk

Paper Advance test

System error 56:10

Roller encoder sensor

failed

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HP CH336A#B1K Manual do Utilizador Página 27