A calibration error occurred. check the lamp, make sure the calibration area is not covered, and try to scan again.

The error you are experiencing on your Unicam 939 AA-Spectrometer with the software reporting error 16 and 2, along with lamps 1,2,3,4, and 10 lighting up, could indicate a few different issues. Here are some steps you can take to try to fix the problem:

1. Restart the spectrometer: Turn off the spectrometer and unplug it from the power source. Wait a few minutes, then plug it back in and turn it on again. Sometimes, a simple restart can fix issues with the instrument.
2. Check the calibration: It is possible that the instrument needs to be calibrated. Follow the manufacturer's instructions for calibrating the spectrometer.
3. Check the lamps: If multiple lamps are lighting up, it could be due to a problem with the lamp assembly. Check that the lamps are properly installed and functioning. Try replacing any lamps that appear damaged or worn.
4. Check the power supply: Make sure the power supply is functioning properly by testing the voltage output with a multimeter. If the voltage output is incorrect, try replacing the power supply.
5. Check the communication between the software and the spectrometer: Ensure that the software is properly communicating with the spectrometer. Check that the cables are properly connected and that the software settings are correct.

If these steps do not resolve the issue, it may be necessary to contact the manufacturer for additional support or to seek the assistance of a professional repair technician.

Hello
You can check the following:
1. The second scan image interface cable
2. The second scan image
Which is usually the interface cable fault

Restart the PC and the scanner and try again. Make sure you installed the right drivers, make sure that the PC see's the scanner, check devise MGR and look under printers, interface devise.

The error code indicated, the print head is defective, so it will not get solve by replacing any number of cartridges. Just follow the steps below to reseat the print head, if that does not help, then replace the print head.

1. Confirm that the printer is powered on and press the <Open> button. (The paper output tray will open.)
   
   
   
   *MP800R shown
   
   
2. Lift the scanning unit (printer cover) completely. (The print head will move to the replacement position.)
   
   
   
   Note: When the scanning unit (printer cover) is opened more than ten minutes, the print head moves to the right side. If this occurs, close the scanning unit (printer cover), and open it again.
   
   
3. Open the inner cover.
   
   
4. Remove the ink tanks by pressing the tab of each tank.
   
   
   Caution: Handle the ink tanks with care so that your clothes and surrounding area do not get soiled. Make sure to remove the ink tanks one by one.
   
   
   
   
5. Raise the print head lock lever.
   
   
6. Tilt the print head slightly towards the front of the machine and lift out gently.
   
   
   
   Caution: Do not touch the print head nozzles <1> , electrical contacts <2>, or ink supply ports <3>. Doing so may cause printing problems.
   
   
   
   
7. Place the print head in the print head holder and lower the print head lock lever carefully until you hear a click.
   
   
8. Insert ink tanks into the print head.
   
   
   
   
9. Press the mark <PUSH> on the ink tank firmly until you hear a click.
   
   
   
   
10. Ensure that all the ink tanks are installed properly and the ink tank lamps light red.
    
    
    
    <7> The ink tanks are installed properly.
    <8> The ink tanks are not installed properly.
    
    Note: Click for Ink Tank Lamp indications.
    
    
11. Close the inner cover and the scanning unit (printer cover).
    
    Caution: When closing the scanning unit (printer cover), be careful not to jam fingers.
    
    Note: The next printing begins, the print head cleaning will begin automatically.

Ink Tank Lamp indications

You can check the status of each ink tank according to the way its lamp flashes.

- On: The printer is ready to print.

- Slow flashing (at about three second interval): Ink is low. Prepare a new ink tank.

- Fast flashing (at about one second interval): Ink tank is empty, or the printer is not ready due to an error.

- Off: An error has occurred and the printer is not ready to print.

open upper cover remove glass panel and lamp assembly clean up that are and return for testing. if not working replace lamp assembly.

Hi ...

Error U150 normally comes in due to the ink tank ... Follow the below steps and I am sure you will be able to resolve this problem ...

I'll also tell you how you can find out what the problem is just by looking at the flashing ligh ...

Replacing An Ink Tank Use the following procedure to replace empty ink tanks or when an ink tank error appears.

1. Confirm that the printer is powered on and press the <Open> button. (The paper output tray will open.)
   
   
   
2. Lift the scanning unit (printer cover) completely. (The print head will move to the replacement position.)
   
   
   
   NOTE: When the scanning unit (printer cover) is opened more than ten minutes, the print head moves to the right side. If this occurs, close the scanning unit (printer cover), and open it again.
   
   
3. Open the inner cover.
   
   
4. Press the ink tank's tab (1), then remove it from the slot (2).
   
   
   
   
5. Unpack the ink tank and pull the orange tape off completely in the direction of the arrow and remove the film.
   
   
   
   Note: Tear the orange tape carefully along the dotted line. If the orange tape remains, printing problems may occur.
   
   
   
   
   <4> Tape is completely removed.
   
   <5> Tape remains. Remove the orange protective cap located on the bottom of the ink tank by twisting as shown in the diagram.
   
   Caution: Do not touch the ink tank contact <6>. Doing so may cause printing problems. Do not squeeze the side of ink tanks as this may cause the ink to leak out. Do not reattach the protective cap once you have removed it.
   
   
6. Insert ink tanks into the print head.
   
   Note: Press the mark <PUSH> on the ink tank firmly until you hear a click.
   
   
   
   
7. Ensure that all the ink tanks are installed properly and the ink tank lamps light red.
   
   
   
   <7> The ink tanks are installed properly.
   
   <8> The ink tanks are not installed properly.
   
   Note: Click for Ink Tank Lamp indications.
   
   
8. Close the inner cover and the scanning unit (printer cover).
   
   Caution: When closing the scanning unit (printer cover), be careful not to jam fingers.
   
   Note: The next printing begins, the print head cleaning will begin automatically.
   
   

Ink Tank Lamp indications
You can check the status of each ink tank according to the way its lamp flashes.

• On: The printer is ready to print.
  
• Slow flashing (at about three second interval): Ink is low. Prepare a new ink tank.
  
• Fast flashing (at about one second interval): Ink tank is empty, or the printer is not ready due to an error.
  
• Off: An error has occurred and the printer is not ready to print.

Please vote if this helps ... Cheers :)

So you cant get the ink tanks in place properly?

Have you tried this method to ensure they're properly seated? Is the printer on or off when you try to seat the tanks?

Refer to the following steps to verify the ink tanks are seated correctly:

1. Confirm that the printer is powered on and press the Open button. (The paper output tray will open.)
   
   
   
   
2. Lift the scanning unit (printer cover) completely. (The print head will move to the replacement position.)
   
   
   
   
3. Open the inner cover.
   
   CAUTION:
   a. Do not try to manually move or stop the Print Head Holder.
   b. Do not touch any metal parts.
   
   
4. Press down on the ink tank until a click is heard, thereby making sure the ink tank is seated properly.
   
   
   
   Note:
   Make sure that the ink tank is inserted in the slot that corresponds to the ink tank's color.
   
   
   
5. Ensure that all the ink tanks are installed properly and the ink tank lamps light red.
   
   
   
   Note:
   Ink Tank Lamp
   You can check the status of each ink tank according to the way its lamp flashes.
6. • - On: The printer is ready to print.
   • - Slow flashing (at about three second interval): Ink is low. Prepare a new ink tank.
   • - Fast flashing (at about one second interval): Ink tank is empty, or the printer is not ready due to an error.
   • - Off: An error has occurred and the printer is not ready to print.
     
7. Close the inner cover and the scanning unit (printer cover).
   
   Note:
   
8. 1. When closing the scanning unit (printer cover), be careful not to jam your finger.
      
   2. When starting printing next time, the print head cleaning launches automatically.

If the error code is actually 5100, this is how you fix it:

Open the paper output tray.
Lift the scanning unit (printer cover) completely. (The print head will move to the replacement position.)
Open the inner cover.
CAUTION:
a. Do not try to manually move or stop the Print Head Holder.
b. Do not touch any metal parts.
Press down on the ink tank until a click is heard, thereby making sure the ink tank is seated properly.
Note:
Make sure that the ink tank is inserted in the slot that corresponds to the ink tank's color.
Ensure that all the ink tanks are installed properly and the ink tank lamps light red
Note:
Ink Tank Lamp
You can check the status of each ink tank according to the way its lamp flashes.
- On: The printer is ready to print.
- Slow flashing (at about three second interval): Ink is low. Prepare a new ink tank.
- Fast flashing (at about one second interval): Ink tank is empty, or the printer is not ready due to an error.
- Off: An error has occurred and the printer is not ready to print.
Close the inner cover and the scanning unit (printer cover).
Note:
When closing the scanning unit (printer cover), be careful not to jam your finger.
When starting printing next time, the print head cleaning launches automatically.

If you haven't installed ink recently -- then you are out of ink and that is why you ink out light is flickering.

Hope this helps.
Good Luck.

Solution: Insert one of each color ink tank MP830

New Page 1 More Than One of the Same Ink Tank is Installed When installing or replacing an ink tank, only one of the following ink tanks should be installed. If the ink tank is not installed correctly, an error message will display.

1. Confirm that the printer is powered on and press the Open button. (The paper output tray will open.)
   
   
   
   
2. Lift the scanning unit (printer cover) completely. (The print head will move to the replacement position.)
   
   
   
   Note: When the scanning unit (printer cover) is opened more than ten minutes, the print head moves to the right side. If this occurs, close the scanning unit (printer cover), and open it again.
   
   
3. Open the inner cover.
   
   
4. Press on the tab to release the ink tank, then remove it from its slot. If you are replacing multiple ink tanks, make sure to replace one by one.
   
   
   
   
5. Insert the ink tanks into the print head. Note: Press the mark "PUSH" on the ink tank firmly until you hear a click.
   
   
   
   
6. Ensure that all the ink tanks are installed properly and the ink tank lamps light red.
   
   
   
   <7> The ink tanks are installed properly.
   
   <8> The ink tanks are not installed properly.
   
   Note: Ink Tank LampYou can check the status of each ink tank according to the way its lamp flashes.
   
   • - On: The printer is ready to print.
     
   • - Slow flashing (at about three second interval): Ink is low. Prepare a new ink tank.
     
   • - Fast flashing (at about one second interval): Ink tank is empty, or the printer is not ready due to an error.
     
   • - Off: An error has occurred and the printer is not ready to print.
     
     
7. Close the inner cover and the scanning unit (printer cover). Note:
   
   
   
   • When closing the scanning unit (printer cover), be careful not to jam your finger.
     
   • When starting printing next time, the print head cleaning launches automatically.

According to Canon's website:

Details Print Friendly Version Issue: ERROR LCD: More than one ink tank of the following color is installed U071
Solution: Replace defective ink tank (MP500 / MP800)

Replacing An Ink Tank Use the following procedure to replace empty ink tanks or when an ink tank error appears.

1. Confirm that the printer is powered on and press the <Open> button. (The paper output tray will open.).
   
   
   
   
2. Lift the scanning unit (printer cover) completely. (The print head will move to the replacement position.)
   
   
   
   Note: When the scanning unit (printer cover) is opened more than ten minutes, the print head moves to the right side. If this occurs, close the scanning unit (printer cover), and open it again.
   
   
3. Open the inner cover.
   
   
4. Press the ink tank's tab (1), then remove it from the slot (2).
   
   
   
   
5. Unpack the ink tank and pull the orange tape off completely in the direction of the arrow and remove the film.
   
   
   
   Note: Tear the orange tape carefully along the dotted line. If the orange tape remains, printing problems may occur.
   
   
   
   
   <4> Tape is completely removed.
   
   <5> Tape remains. Remove the orange protective cap located on the bottom of the ink tank by twisting as shown in the diagram.
   
   Caution: Do not touch the ink tank contact <6>. Doing so may cause printing problems. Do not squeeze the side of ink tanks as this may cause the ink to leak out. Do not reattach the protective cap once you have removed it.
   
   
6. Insert ink tanks into the print head.
   
   Note: Press the mark <PUSH> on the ink tank firmly until you hear a click.
   
   
   
   
   
7. Ensure that all the ink tanks are installed properly and the ink tank lamps light red.
   
   
   
   <7> The ink tanks are installed properly.
   
   <8> The ink tanks are not installed properly.
   
   
   Note: Click for Ink Tank Lamp indications.
   
   
8. Close the inner cover and the scanning unit (printer cover).
   
   Caution: When closing the scanning unit (printer cover), be careful not to jam fingers.
   
   Note: The next printing begins, the print head cleaning will begin automatically.
   
   

Ink Tank Lamp indications
You can check the status of each ink tank according to the way its lamp flashes.

• On: The printer is ready to print.
  
• Slow flashing (at about three second interval): Ink is low. Prepare a new ink tank.
  
• Fast flashing (at about one second interval): Ink tank is empty, or the printer is not ready due to an error.
  
• Off: An error has occurred and the printer is not ready to print.