OKI 7100 用户手册

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页码 216
ACCESSORIES > 200
ADDITIONAL PAPER TRAYS
Two additional paper trays can be installed and, when combined with 
the standard paper tray, paper capacity increases to approximately 
1590 sheets.
Installation
1.
Switch off the printer and disconnect the power cable and 
printer interface cable.
WARNING!
The printer weighs 48 kg. 2 people are required to lift the printer 
safely and prevent any personal injury.