Why is my Canon Scanner not being detected by my computer?
If your host computer isn't detecting the Canon Scanner, it might be due to a faulty installation of the device driver. Try uninstalling and then reinstalling the device driver. Also, check the USB cable to ensure it's securely connected to both the scanner and the computer. If neither of those steps work, the main PCB may be faulty and require replacing the drive unit.
What to do if my Canon Scanner does not output an image?
If your Canon Scanner isn't outputting an image, ensure the USB cable is securely connected. If the connection is good, the contact image sensor may be faulty and need replacement. Alternatively, the main PCB might be faulty, requiring replacement of the drive unit.
Why is my Canon Scanner not operating?
If the Canon Scanner is not operating, first check if the carriage lock is locked and unlock it. Also, ensure the flat cable is securely connected to both the contact image sensor and the main PCB. If the issue persists, the contact image sensor may be faulty and require replacement. In some cases, a faulty main PCB may be the cause, requiring replacement of the drive unit.
What to do if Canon CANOSCAN N1220U Scanner Information is not displayed or Scanner Self Test terminates without scan operation?
If the Canon Scanner Information is not displayed or the Scanner Self Test terminates without scan operation, unlock the carriage lock. If that doesn't work, ensure the scanner is properly detected by the host computer. Check the flat cable connector; if it looks normal, replace the flat cable. The contact image sensor or main PCB could also be faulty and may require replacement.
How to fix uneven image density or lines on Canon Scanner?
If you're seeing uneven image density or lines when scanning with your Canon Scanner, try cleaning the document cover or document glass. A faulty calibration data could also be the cause, so perform the calibration. Also, external light entering the scanner can cause this issue. Make sure the document cover is fully closed, or use a sheet to block external light. The contact image sensor or main PCB might also be faulty and require replacement.
Why is the drive motor not running on my Canon Scanner?
If the drive motor in your Canon Scanner isn't running, check the connector J2 to ensure it's securely connected. If the connection is fine, the drive motor itself may be faulty and need replacement. Alternatively, a faulty main PCB could be the cause, requiring replacement of the drive unit.
How to fix unable to find USB Canon scanner?
If you are unable to find the USB Canon scanner, it could be because the device driver for the scanner is not installed on your computer. Please install the device driver. Also, ensure that the scanner is properly detected by the host computer.
What to do if the LED of the contact image sensor is not lighting on Canon CANOSCAN N1220U?
If the LED of the contact image sensor on your Canon Scanner isn't lighting up, first check the flat cable to ensure it's securely connected. If the connection is good, the contact image sensor itself may be faulty and need replacement.
What to do if Carriage lock is locked on Canon Scanner?
If the carriage lock is locked on your Canon Scanner, unlock it. If the issue persists, the drive motor or home position sensor may be faulty, requiring replacement of the drive unit.
What to do if unable to open file on Canon Scanner?
If you are unable to open a file when using the Canon Scanner Test, it may be because the test is being run from a CD-ROM or a write-protected HDD. To resolve this, copy the Canon Scanner Test to a writable HDD and use it from there.
Technical details for N650U/N656U and N1220U models, including resolution and scan time.
Steps for setting up the scanner, including unlocking the carriage and connecting to a host.
Explanation of the contact image sensor, scanning sequence, and drive motor.
Covers A/D conversion, resolution conversion, gamma correction, and packing.
Details on the gate array, buffer RAM, ROM, and USB interface.
Details on removing and attaching the drive unit and drive wire.
Procedure for removing the contact image sensor and its related parts.
Addresses issues like 'Image not output' and 'Uneven image density or lines'.
Covers problems like 'Host computer not detecting scanner' and 'Scanner not operating'.
Guide to using the utility software for diagnosing hardware or communication issues.
General| Type | Flatbed Scanner |
|---|---|
| Optical Resolution | 1200 x 2400 dpi |
| Interface | USB |
| Scanning Element | CIS (Contact Image Sensor) |
| Light Source | 3-color RGB LED |
| Color Depth | 48-bit internal, 24-bit external |
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