2. Installation
• D137/D138 machines have two power cords. Install a securing bracket for each power
cord.
How to Set the Toner Cartridge
• Be careful when setting the toner cartridges because the toner cartridges have different shapes,
and the cartridge may be damaged if you try to force a cartridge into the wrong place. The
position of the toner cartridges is Y, M, C, K from the left.
1. Open the toner supply unit front cover [A].
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