Ld Safety Switches - Ricoh B291 Service Manual

LASER EXPOSURE

6.6.5 LD SAFETY SWITCHES

BICU
CN312-15,4,2
PSU
+5V
To ensure personal safety and to prevent the laser beam from inadvertently
switching on during servicing, power to the laser diode is switched off when the
front cover or upper right cover is opened. Four safety switches are installed in
series on the LD5 V line from the power supply unit (PSU) via the BICU board.
B291/B295/B296/B297
CÓPIA NÃO CONTROLADA
LDDR
CN402-1,4,14
LD5V
LD2
6-52
CÓPIA NÃO CONTROLADA
Upper Right
Cover Switch
+5V CN403-1
CN403-3
Front Cover
LD1
Safety Switch
B195D930.WMF
SM