Steps to Fix Canon Printer Error Code 5b02:
Step 1: Press the Power button while pressing and holding the Stop/ Reset button.
Step 2: Now press the Stop/Reset button two times while pressing and holding the Power button.
Step 3: While releasing the Power button and the Stop / Reset button the printer will move into a service mode.
Step 4: When the LED lights in green, press the Stop/Reset button.
Step 5: You need to repeat this process many times to fix this error.
Just follow these steps and error will be fixed automatically without showing any issue.
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