This article explains how to troubleshoot Yuno POS devices.
Removing the back lid
All cables on Yuno are managed behind a back lid that in some cases needs to be removed for troubleshooting purposes.
Before releasing the lid, make sure the device is unpowered and that there are no external USB devices connected to the POS using the slots on the side of the device. To be sure, disconnect the device from the power plug.
The button that releases the lid is located on the lower part of the plastic lid, next to the foot stand:
- Press the button to release the lid:
- Yuno with the back lid removed:
Removing the foot stand lid
In some cases, to enable cable management, foot stand lid needs to be removed as well. To remove the foot stand lid, first, remove the back lid as described above. With the back lid removed, pull and slide the foot stand lid outwards:
Disconnecting the blackbox (Sweden)
- In case blackbox needs to be disconnected, remove the back lid as described above.
- With the back lid removed, locate the blackbox device:
- For more info on how to identify blackbox devices, check out Blackbox: Sweden (skattebox).
- Follow the cable to find the USB that it is connected to. To disconnect it, pull on the USB connector downwards:
- You might have to undo the white plastic clip that keeps the cables together to be able to unplug the blackbox:
- If you are disconnecting the blackbox for blackbox troubleshooting purposes, wait a few seconds and connect it again.
Enabling DHCP
If device has lost connectivity to local network but the network interface LED is on/blinking, it is a good idea to try to enable DHCP on device. For info on how, check out Enabling DHCP on VPOS.
Replacing a disk (SATA)
Replacing a disk on a Yuno device is a fairly straightforward process. Make sure the device is shut down and unpowered.
- Remove the back lid as described above.
- Locate the disk on the back side of the device. If the disk does not look like the one in the photo below, check out Replacing a disk (M2) guide.
- Twist the black plastic arm that holds the disc cradle outwards:
- With the black plastic arm out of the way, slide the disk cradle downwards, it will only move for a few millimeters:
- Disk cradle is now released and can be removed from the device:
- Remove the cradle from the device and replace the disk, making sure the new disk points the same way as the old one:
- Slide the cradle with the disc back in and secure it with the plastic arm.
Connecting disk to secondary SATA interface
- Remove the disk following the Replacing a disk (SATA) guide
- Connect the disk to the secondary SATA interface:
- Place the disk in the cradle space, slide the cradle over i and, secure the cradle it with the plastic arm.
Replacing a disk (M2)
In some cases, Yuno devices are using a slightly different M2 disk. The replacement process is just as straightforward as it is with the SATA disk. The size of the M2 is 2280
- Remove the back lid as described above.
- Locate the disk on the back side of the device.
- Press the small plastic arm upwards to release the disk cover and slide the cover downwards:
- Using a small Phillips screwdriver, remove the screw that holds the disk in place:
- With the screw removed, the disk will pop out. Remove it by gently pulling it out in the direction the disk is facing:
- Plug the new disk in, making sure it sits correctly:
- Gently press the disk down (there should be very little resistance to it), secure it with the screw and slide the disk cover back on.
Connecting disk to secondary M2 interface
- Remove the disk following the Replacing a disk (M2) guide.
- Connect the disk to the secondary SATA interface:
- Gently press the disk down (there should be very little resistance to it), secure it with the screw and slide the disk cover back on.
Replacing RAM
- Remove the back lid as described above.
- Locate the RAM and release it by twisting the arms holding it away from the RAM:
- RAM is released when it pops outwards from its socket. Remove it by gently pulling on it in the direction that RAM is pointing to:
- Gently slide the new RAM all the way in and press it down until it clicks and the arms securely hold the RAM.
Mounting Yuno on a VESA adapter
Yuno can be mounted on a VESA adapter by completely removing the foot stand.
- Remove the back lid as described above.
- Remove the foot stand cover as described above.
- Disconnect the cables and extract them from the foot stand cable guides, make sure you remember how to connect them again in the same way.
- Unscrew the 10 screws that hold the foot stand on the frame. 7 of them are placed above the foot stand:
- Twist the foot stand to expose further 3 screws that hold the foot base on the frame and unscrew them:
- Use the same screw holes to secure a VESA compatible adapter.
Resetting BIOS battery
- Unpower the device and disconnect it from the power plug.
- Remove the back lid as described above.
- Remove the motherboard cover by unscrewing the 2 screws that hold it in place.
- 1st screw:
- 2nd screw:
- Remove the motherboard lid carefully and locate the BIOS battery and its cable:
- Using a small tweezer or similar, unplug the battery from the motherboard:
- Wait for 5 seconds and then plug the battery back into the motherboard:
- Place the motherboard lid back on and secure it in place with the screws.
Reseting BIOS settings
- Shut down the device and connect an external keyboard to it using the USB slots on the side of the device.
- Start the device by pressing the power button and press Delete on keyboard in rapid succession.
- Using the keyboard arrow keys, navigate to SCU and confirm with Enter:
- Using the keyboard arrow keys (right), navigate to Exit page, select Load Defaults and confirm with Enter and Enter again:
- Select Exit Saving Changes, confirm with Enter and Enter again:
- The device will now restart.