Brother jam messages are a map — Tray, Inside, Rear, 2-sided

What this error means

Brother's jam messages are location indexes, not fault codes: 'Jam Tray' = the paper tray, 'Jam Inside' = front, around the drum/toner, 'Jam Rear' = the back door and fuser area, 'Jam 2-sided' = the duplex path. Open the door the message names. Phantom jams that persist after clearing mean a torn scrap is still sitting on a sensor.

Symptoms

• Jam message naming a location
• Message persists after clearing (hunt the scrap)

Try this first (safe DIY steps)

1. Open the door the message names; remove paper in the feed direction
2. Check for torn corners with a flashlight — especially rear/fuser (CAUTION: hot)
3. Open and close the front cover to reset after clearing
4. Persistent phantom jams: the scrap hunt continues — duplex tray out, rear door open

Safety: power off before any physical intervention. Never bypass covers or interlocks — fuser areas run hot enough to burn.

When to call a technician

Frequent same-location jams = worn rollers in that path.