Error 8101

[ChafiekKamaar]

Hi  when ever i start printing on the plotter  it prints half way then it stops and shown error 81:01.I tested  all the motors,sensors advance paper test no errors everything ok.Please help

[TomB3]

This error can occur because the product has been dropped during transportation, causing structural damage.
Before continuing with the 81:YZ troubleshooting, first look for structural damage.

To identify the structural damage, look for the following three things:
● Consistent 81:YZ error codes.
● Platen fingers rubbing on the roller surface, leaving black marks on the roller.
● A gap on the platen beam. If there’s any gap in Z (vertical direction) between the plastic feature of the
platen and the metal side plate, then the chassis is damaged and the unit cannot be repaired.

Problem Description:
Problem with paper advance. This source of error could come from an error in any of the following systems:
paper motor, disk encoder, cables or main electronics.

Corrective action:
Try the following:
1. Check for any visible obstacles restricting the movement of the Drive Roller. If there is a wrinkled mass
of paper inside the paper path, lift the Pinchwheels (using the Media Lever) and clear the obstruction.
2. Perform the Media Drive diagnostic test to troubleshoot the problem further. See Paper Drive Test
on page 89.
3. Perform the Rewinder diagnostic test to troubleshoot the problem further. See Rewinder Test
on page 98.
4. Check the connections on the Engine PCA; the Media Advance Drive is connected to the connector
labeled Paper Motor.
5. Adjust the encoder disc and motor mount configuration using the Media Advance Drive installation
instructions. See Media Advance Drive on page 330.
6. Replace the Media Advance Drive. See Media Advance Drive on page 330.

This is straight out of the service manual, you can google and download the PDF for free.  Includes pictures on where to look for the structural damage.

Hope this helps

[SHThompson]

You actually want to start with the encoder disk which is not easy to get to.

I had one of this model that when I got as far as removing the connector that plugged into the encoder assembly it was loose, and after plugging it back in the machine ran just fine. In that case when I touched the wires with my finger the plug fell out of the socket on the encoder sensor.

You should search online and see if you can find the service manual because it would take me about an hour and a half to disassemble the machine check the encoder sensor and then put things back together and I've done it before. If you are not experienced on this machine you should have instructions and take pictures of the process and of how things are plugged in.

Another potential issue is the adhesive that holds the encoder disk to the end of the platen roller may have deteriorated and the disc is not sticking to the end of the shift. I have not had this happen personally but have heard of the issue.

[SHThompson]

By the way I think the structural damage issue would occur with a new printer that had just been installed.