You mentioned that you have already replaced the Laser Unit, but the error persists. Here are a few more steps you can try:
Check the cable: Ensure that the cable connected to the Laser Scanner Unit is properly attached and not damaged.
Replace the DC Controller PCB (PCB4): If the error still persists after checking the cable and replacing the Laser Scanner Unit, you might need to replace the DC Controller PCB (PCB4)
Here are some YouTubes that may help - once you get past ads.
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How to fix error code E110 in Canon ImageRunner Cantina IR
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If your Canon iPF605 printer won't enter service mode and gets stuck at the "S" symbol without initializing, it may indicate a firmware or hardware issue. Consider updating the firmware or contacting Canon support for further assistance.
Troubleshoot this issue step by step:
Check the Feed Selection Lever:
Ensure that the Feed Selection Lever (located on the lower left side of the front of the scanner) is in the correct position (up) for separation.
Straighten the edges of the stack of documents to be scanned.
Set the document guides so they are wider than the document to be scanned.
Place the documents face up into the feed tray, ensuring they touch the document stoppers.
Clear Any Jammed Paper:
Be careful when removing jammed paper to avoid cuts.
Remove any documents that have been left in the eject tray.
Close the document eject tray.
If the document ejection is stopped partway, perform this operation with the document eject tray extension open.
Hold the upper unit as shown in the diagram and open it to the point where you can remove the jammed document. The pickup roller is located in the middle of the upper unit. Do not hold the protrusion on the upper unit when opening it, as it may deform the pickup roller or cause a feeding error.
Close the feeder cover.
If the jam occurred in the feed section, pull the document out carefully without applying too much force. Be sure to remove any torn parts remaining in the scanner.
Close the upper unit slowly, ensuring it clicks into place. Do not force it to close, as this may damage the scanner.
After removing the jammed paper, check if the last page was scanned, and then continue scanning.
Rapid Recover System:
If a paper jam occurs when the "Rapid Recover System" is enabled in the ISIS/TWAIN driver settings, the image of the document is not saved, and scanning stops. You can continue scanning from the document that caused the paper jam after fixing the issue.
Additional Considerations:
Make sure the pickup rollers retract when the machine is powered on.
Check that the stopper plates are in the down position.
Verify that the upper unit is completely closed after clearing the jam.
Remember to handle the scanner components carefully to avoid damage. If the issue persists, consider seeking professional assistance or contacting Canon support for further guidance
I would use a soft toothbrush and a little Isopropyl Alcohol and then a lint free cloth and then give another gentle brush. There are some other ideas here. Take no notice of the answer by 'Marvin' on Fixya about dropping the head in boiling water, I think he thinks he is dealing with a colour inkjet printer.
https://www.google.com/search?q=canon+p23-dh+v+printing+calculator+clean+print+head
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Error P03 on a Canon printer typically indicates a paper jam, even if you cannot physically see any jammed paper. Here are a few steps you can try to resolve the issue:
Turn off the printer and unplug it from the power source.
Carefully check the paper tray and inside the printer for any jammed paper or debris.
Remove any jammed paper or debris you find.
Plug the printer back in and turn it on.
Attempt to print again.
If you don't see any paper jammed in the printer, there are a few other things you can try to resolve the error P03:
Try resetting the printer. To do this, turn off the printer, unplug it from the power source, and wait for a few minutes before plugging it back in and turning it on.
Check the ink cartridges and make sure they are properly seated and have enough ink.
Clean the printer's rollers. Rollers are the small rubber wheels inside the printer that move the paper through the printer. Over time, dust, debris, or ink can build up on the rollers and cause paper jams. Cleaning the rollers can help resolve the issue.
Try to update the firmware of the printer. Sometimes, a firmware update can resolve the issue.
Check the printer's settings, ensure that the size of paper loaded match the size of paper set in the settings.
If the problem persists after trying these steps, you may want to contact Canon support for further assistance.
Question edited for clarity and add CAPS.
Is there a paper roll in it? I have seen them do this as the calculator is trying to feed the roll edge. You can turn printing off, but most need a roll in place. There is a repair video for a similar machine.
https://www.google.com/search?q=Canon+MP27D+Printing+Calculator+continues+running
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Fixing a problem with a laser unit depends on the specific issue you're facing. Here are general steps you can consider:1. **Inspect and Clean:** Examine the laser unit for any visible dust, debris, or obstructions. Use a can of compressed air to gently blow away any particles that might affect the laser's performance.2. **Check Connections:** Ensure all cables and connections related to the laser unit are secure. Loose connections can lead to malfunctions.3. **Calibration:** Some laser units may require calibration. Consult the device manual for instructions on how to perform calibration procedures. This often involves using specific calibration tools or software.4. **Replace Toner or Cartridge:** If print quality is an issue, consider replacing the toner cartridge. Low toner levels can affect the laser unit's performance.5. **Firmware Update:** Check if there are firmware updates available for the laser unit. Manufacturers may release updates to address performance issues or bugs.6. **Professional Service:**https://capcuttemp.net/rara-capcut-template/
The E732-001 error on a Canon iR 3225 indicates an issue with the fixing assembly temperature. Here are some steps to troubleshoot and resolve this error:
Reset the Condition:
Enter service mode by pressing the following sequence on the control panel: COPIER > FUNCTION > CLEAR > ERR.
This will reset the error condition. If the message disappears, your printer is ready to use. If this doesn't work, there may be a hardware problem as addressed below.
Replace the Main Thermistor:
The main thermistor is responsible for temperature sensing. If it's faulty, it can trigger the E732-001 error.
Consider replacing the main thermistor to resolve the issue.
Check the DC Controller PCB:
If the problem persists, inspect the DC controller PCB for any defects or malfunctions.
Replacing the DC controller PCB may be necessary.
Remember to turn off the printer before performing any maintenance tasks. If the error persists or if you need further assistance, I recommend contacting your local authorized Canon dealer or the Canon Customer Support Center for professional service