Ricoh FT 1008 - Manual (Page 41)

When blinks on the operation panel, it is time to replace the toner
cassette (copying is still possible). When is continuously displayed,
copies cannot be made until the cassette is replaced.
l
When you install the new toner cassette, be careful not to touch
the OPC (blue material). Copy image and copy quality could be
affected.
l
After a new toner cassette is installed, the density of the first few
copies may be slightly lighter.
Open the top unit.
Remove the used toner cassette
carefully.
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Be careful not to stain your hands with
the toner. If toner is present, clean up
with a cold damp cloth.
Open the new toner cassette
cardboard box.
Remove the toner cassette from the
vinyl bag.
l
Keep the vinyl bag for repacking.