What are some common troubleshooting steps for issues with Tray 1?
Common troubleshoot methods involve aligning paper guides correctly and avoiding overfilled trays. Make sure the tray is not extended when printing long papers as this can cause jams. Information on clearing print jobs and resolving feeding and jamming issues in Tray 1 can be found on page 116.
From the official HP Laserjet Pro Mfp M428 M429 manual, page 115
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