@MOONCHOI There are a few things we may need to consider, if its printing fine but doesn't scan or copy shows that there's something wrong with the scanner feature, the first thing we need to do, is perform a hard reset on the printer to refresh all settings and here's how you do it:
Step 1: Reset the printer and check the power source
Reset the printer to clear certain error states by calibrating the scanner mechanism, and then check the power source to confirm the printer is getting enough power to operate the scanner.
Press the Power button to turn on the printer, if it is not already on.
With the printer turned on, disconnect the power cord from the printer.
Disconnect the power cord from the power source, and then wait 30 seconds.
If you previously connected the power cord to a power strip or multi-plug outlet adapter, reconnect the cord directly to a wall outlet to ensure the printer is getting enough power.
Reconnect the power cord to the rear of the printer, and then turn on the printer.
If the error no longer displays, make a test copy to confirm the issue is resolved.
If the error still displays, connect the printer power cord to a different wall outlet to determine if the original outlet is causing the issue.
If the error still displays with a different wall outlet, continue to the next step.
Step 2: Run the Print and Scan Doctor (Windows only)
Some scan error states might be resolved by running this automated troubleshooting tool for Windows computers.
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