For installing the tray heater in D537

1. Rear cover [A] ( x 8)

2. Pull out the two trays in the optional paper feed unit.

   

3. Install the tray heater [B] in the optional paper feed unit ( x 1).

   

4. Remove the two securing brackets [C] ( x 1 each), and then the rear cover [D] of the optional paper feed unit ( x 2).

5. Remove the harness cover bracket [E] ( x 1).

   

6. Pull out tray 2 from the mainframe.

7. Replace the shoulder screw [F] with the washer screw [G], using securing bracket [H] ( x 1).

   

8. Connect the harness [I] to the connector [J] of the tray heater.

9. Route the harness [I] as shown and clamp it with four clamps ( x 4).

10. Connect the harness [I] to the connector [K] of the mainframe.

11. Reassemble the mainframe and optional paper feed unit.

    

12. Attach the on/standby decal [L] to the right-hand side of the main power switch.