Attaching the 500-sheet paper feed unit to the 1000-sheet paper feed unit

Hold the 500-sheet paper feed unit as shown in the illustration below, and then lift it.

Align it with the top of the 1000-sheet paper feed unit, and slowly lower it straight down.

Place it so that it is held firmly in place by the vertical pins.

Pull the tray of the 500-sheet paper feed unit out slowly until it stops, then lift the front of the tray slightly, and pull it out completely.

Place the tray on a flat surface.

Attach a screw in the hole on the left side of the tray opening to secure it to the paper feed unit.

Tighten the screw firmly using a coin.

Lift the front of the tray, and slide it carefully into the paper feed unit until it stops.

On the rear of the unit, attach two brackets using the remaining screws.

Tighten the screws firmly using a coin.

Proceed to printer connections. See steps from 5 on Attaching the Paper Feed Unit.