Ricoh Aficio MP C3501 Service Manual

Laser Optics
D086/D087 4-42 SM
4.6.2 LD SAFETY SWITCH
A relay on the PSU ensures technician and user safety. It also prevents the laser beam from
turning on during servicing. This relay turns off when the front cover, upper left cover, or right
door is opened. At this time it cuts the power (+5V) supplied to the LD board for each color
through the BICU.
Two safety switches are turned on or off by the front door or right door, and this opens the
relay.
 LD Driver: Precise Pulse Modulation ASIC on C-MOS technology
 LDB: LD Drive Board (included in the LD Unit)
Error Messages
Along with other switches, the LD safety switches help show error messages related to
external covers. When one or more covers are open, the messages, "Cover is open." and
"Close the indicated cover," show with a diagram. The diagram shows which cover is open.

Ricoh Aficio MP C3501 Specifications

General

Print Technology	Laser
Print Speed (Color)	35 ppm
Print Speed (Monochrome)	35 ppm
Maximum Print Resolution	1200 x 1200 dpi
Standard Paper Capacity	1, 200 sheets
Maximum Paper Capacity	4, 400 sheets
Duplex Printing	Yes
Maximum Scan Resolution	600 dpi
Copier Resolution	600 dpi
Fax Capability	Optional
Memory (Maximum)	1.5 GB
Network Connectivity	Ethernet
Connectivity	USB 2.0, Ethernet 10/100Base-TX
Functions	Print, Copy, Scan
Hard Disk Drive	160 GB
Scan Speed	50 ipm
Operating System Compatibility	Windows, Mac, Linux