Apple ColorLaserWriter 12/600PS - Manual (Page 47)

4 Take the toner cartridge out of its packaging and remove the two pieces of packing tape.
Choose the toner color that matches the colored tabs beside the opening in
the carousel.
5 Distribute the toner powder.
Gently rock the toner
cartridge back and forth.
The color of the toner inside should
show through this small window in the
top of the toner cartridge.
Notice the arrow embossed
on the toner cartridge.
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