If you are experiencing issues such as not being able to connect to the robot, see the guide Troubleshoot MiR250 connection issues or Troubleshoot connection issues to MiR500 or MiR1000.

If you are experiencing other issues, for example, the robot failing to start up, contact MiR Technical Support for assistance.

How to replace the robot computer on MiR250

Things you'll need

• A new robot computer

• A T8 screwdriver

• T10, T30, and T45 screwdrivers

• A 15 Nm torque wrench with a T45 head

• A 10 mm wrench

Before replacing the robot computer

Step 1: If possible, note down any modified settings from the robot interface, and export the site file if you do not already have a copy. All of your robot's data is saved on the robot computer and will not be transferred automatically after you have replaced the computer.

Step 2: Turn off the robot and disconnect the battery. To disconnect the battery, follow these steps:

1. Remove the rear cover by pressing the two white buttons and pulling off the cover. When removing the cover, un-click the two bottom corners first and then the two top corners.
    

2. Turn the Battery lock switch clockwise to release the Battery lever.
   

3. Pull the Battery lever down to disconnect the battery.
   

4. Turn the Battery lock switch counter-clockwise to lock the battery lever again.
   

Step 3: Remove the front cover by unscrewing the two screws with a T30 screwdriver and pulling off the cover. When removing the cover, un-click the two bottom corners first and then the two top corners.

Step 4: Disconnect the antennas. Unscrew the antennas from the top compartment covers and remove them.

Step 5: Disconnect the antenna cables from the top cover. Unscrew the two nuts from the antenna connectors. Use a 10 mm wrench. Then, push the antenna connectors through the covers.

Step 6: Remove the top compartment covers from the top plate by unscrewing the eight screws. Use a T10 screwdriver. Make sure the antenna cables are not connected to the compartment covers.

Replacing the robot computer

Step 8: Unscrew the four screws from the robot computer bracket using a T8 screwdriver.

Step 11: Mount the new robot computer to the bracket using the same four screws that were used for the old computer.

Step 12: Plug all the cables into the robot computer in the same sockets they were connected to in the old computer. Make sure to plug the cameras into the correct USB sockets.

Step 13: USB restore your robot by following the guide How to USB restore MiR250.

How to replace the robot computer on MiR500 and MiR1000

Things you'll need

• A new robot computer

• A T15 screwdriver

• A 2.5 mm Hex screwdriver

Before replacing the robot computer

Step 1: If possible, note down any modified settings from the robot interface, and export the site file if you do not already have a copy. All of your robot's data is saved on the robot computer and will not be transferred automatically after replacing the computer.

Step 2: Turn off the robot, and disconnect the battery. To disconnect the battery, open the rear compartment, and turn the Battery disconnect switch to the Off position.

Step 3: Press the two buttons on the front hatch, and pull open the hatch.

Step 4: Remove the compartment hatch. To do this, disconnect the status light cable, and turn the two hinges in the bottom corners.

Step 5: Turn the two levers 180°, and pull out the electronics drawer.

Replacing the robot computer

Step 1: Unplug all of the cables from the robot computer and router. Take pictures of the cable connections or label each cable so you can plug them back into the same sockets on the router and new computer.

Step 2: Unscrew the four screws from the router and robot computer bracket using a TX15 Torx screwdriver.

Step 3: Gently remove the bracket from the robot.

Step 4: Unscrew the four screws mounting the computer to the bracket using a 2.5 mm Hex screwdriver. The screws are inserted from behind the robot computer on the router side of the bracket.

Step 5: Remove the computer, and mount the new robot computer to the bracket in place of the old one. Mount the new robot computer to the bracket using the same four screws.

Step 6: Place the router and robot computer bracket in the electronics drawer, and mount it using the four screws. Use the same screws that held the bracket in place before.

Step 7: Plug all the cables into the computer in the same sockets they were connected to in the old computer. Make sure to plug the cameras into the correct USB sockets.

Step 8: Plug the Ethernet cables back into the correct ports in the router. The port numbers are printed on the router. Make sure they are connected to the same ports as before:

• Port 2: Power board

• Port 3: Robot computer

• Port 4: Safety PLC

• Port 5: Top interface

• PWR: Power cable

Step 9: USB restore your robot by following the guide How to USB restore MiR500 and MiR1000.

Troubleshooting

If the robot does not start up or run correctly after USB restore, check that all the cables are plugged into the robot computer correctly. There are:

• Two USB cables

• Two antenna cables

• One Ethernet cable

• One power cable

• One audio cable

• One SW cable

It is also possible that you need to re-calibrate or reconnect some of the sensors.

Troubleshoot MiR250 connection issues