Ld Safety Switches - Ricoh A193 Service Manual

LASER EXPOSURE

3.5 LD SAFETY SWITCHES

A193D008.wmf
To ensure that the laser beam does not inadvertently expose the drum during
servicing, there are two safety switches located at the front cover. The two
switches are installed in series on the LD5 V line from the dc power supply
board.
When the front cover is opened, the power supply to the laser diode is
interrupted.
(A193) 2-22 SM