Ricoh SP 311DN Service Manual page 13

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Turn off the main switch before attempting any of the procedures in the Laser Optics
Housing Unit section. Laser beams can seriously damage your eyes.

CAUTION MARKING:
Symbols, Abbreviations and Trademarks
This manual uses several symbols and abbreviations. The meaning of those symbols and
abbreviations are as follows:
Clip ring
Screw
Connector
Clamp
E-ring
SEF Short Edge Feed
LEF Long Edge Feed