GCC Printers 21 Series - Manual (Page 72)

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1. Switch off the power to the printer.
Remove the paper cassette from the
printer (if installed).
2. Squeeze the latch at the upper left of
the rear cover and pull towards you to
open the rear cover.
3. Line the Duplex Unit up with the left and
right channels inside the printer (as
shown) and slide the unit firmly all the
way into the printer.
Step 10b. Duplex Unit Installation
Note: These instructions apply to users of the Elite 21
N
model who are adding the Duplex Unit as
an option. The Elite 21
DN
and Elite 21
SE
models ship with the Duplex Unit pre-installed.