Difficult and miscellaneous disease canon LBP623cdn printer calibration steps (suitable for CRG054 series toner cartridge)
1. Shut down and restart the printer before it is effective, press the key to select the menu, and press the OK key
2. Press the key to select adjustment/maintenance, press the OK key
3. Select to adjust the image quality and press OK
4. Press the key to select correct print color mismatch, press the OK key
5. Select Start and press OK
6. Printer begins calibration
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